Parallel Inverters - Double the Power Hack! Part2

[@AndyShell]

3 years latter and your videos are still great to watch over again. Thanks for all your hard work man. :)

[@sorenkaden8615]

pro trick: watch series on Flixzone. Me and my gf have been using it for watching a lot of movies these days.

[@jayceonjulien3764]

@Soren Kaden definitely, I've been watching on flixzone} for months myself =)

[@coronavirus3595]

are you gay? you have crush on him

[@JuliansRandomProject]

"Let our powers combine!" Nice hack! Could be a first. Since I have a small pile of the 410W inverters kicking around in the garage this is for sure on my to-do list of projects now. Keep up the great work.

[@garbleduser]

I would love to have a discussion with you about the dark art of mosfet substitution.

[@charlesrichards5389]

Substitute mosfets, get two 800 watt inverters. **Surprised Pikachu**

[@rolanddvcourt]

Just watched the 1st Video. Thanks!

[@paulpvhl1930]

Very interesting - and this time remembering to subscribe!. This triggered a number of thoughts for me, so I thought I'd share a couple of them even though it's an older video. Why not add some more capacitance to the two linked ones (or to each individually) so they can handle more surge current, to the limit you looked up for the MOSFETs? As to construction: 1) When you had it all apart one could see that the boards could be easily stacked, put into a new case with a shared heatsink, also allowing some reconfiguration within the case and/or fascia layout, if desired, including more capacitance; 2) why not add a current sensor and relay within that new case, and switch on the backup circuit when a threshold is reached -- automatic more efficient convertor that can have one side disabled if it breaks down. The above could be done while preserving their cases, as you've done here. In which case, why not discover the location of the connection spots on one, locate where a hole needs to be drilled in the cases to reach and solder those locations (covered over with tape after), define a connection method (like snaking a plug to the back or underside of the case), and you can easily swap multiple units as desired. Can't wait to check this out with a couple of 1500 watt units. I'm considering starting an open design for an efficient multi-input and output power system for use on boats, RVs, and off-grid that can convert, store, and condition any available power source, automatically choosing between that best available sources, etc. This video triggered many ideas to improve my system. Keep up the good work!

[@UmbreWolf]

I bet them fuses belw with the circular saw, seeing how it performed the second and third time you pulled the trigger

[@outlawrebel4209]

13:25 so I came across your video by asking Google "can I take two 400 watt power inverters and join them together in parallel to make one 800 watt inverter?" Boy am I glad I did that. Not only was your video very informative, but entertaining as well. You have gained a new subscriber. Although I will not be joining mine together I think I'll just keep them separate. Thank you for the video, now I must find some flammable liquid to place on top my mini fridge.😅

[@knurlgnar24]

Yeah, the short answer is that it's simply not practical to join two inverters together to double the output power but I wanted a project so I did this. Also, the inverters were sent by a viewer so I wanted to use them for something on video. I have another very old video where I did a similar thing with two UPS units by putting them in series instead of parallel. I don't post much anymore but that may change at some point. Thanks for the comment!

[@joeschmitz3346]

You would burn them out inside an hour under continuous use! The test you’re showing is very deceiving to people who don’t really understand electronic circuits and their designs. Someone could actually burn down a house using your method in making them believe they can do it.

[@cjg690]

They'd be idiots if they even tried that's why he says it's an "experiment" not meant to be used in day to day who in there right mind is going to go out buy two 20- 40$ inverters an expect to run a house

[@garypowell4565]

"Burning down the house"......by Talking Heads

[@dewiz9596]

The real question is. . . why do we need AC other than for its ability to have voltage transmission? With almost ALL electricity, the first thing we do (after transforming voltage), is to convert it to DC. Computers, etc.

[@SimonQuigley]

Motors don't, and that's why he was testing with all motor devices

[@ΠάριςΑζής]

The A.C won the game many years ago just because it was (and still is) very easy to transform it by conventional transformers. In this way, power plants transform it (step up) to very high voltage (150 - 400 - 750 KV) for its distribution with long haul lines from the remote production place to very long distances where it will be consumed. This tranformation is done in order to minimise transfer losses. Then, at the end of each long haul line they transform it again (step down) in order to make it easy to consume from households. So A.C transmission had dominated just because of the existence of the transformer. At that time of decision about the issue, the technology could not support D.C transmission which although has less losses was impossible to transform it. Such problems do not exist in our days and High Voltage D.C transmission is applied in many cases. On the other hand D.C to D.C conversion in general is not a problem any longer.

[@gumnahs]

Very true !! Nowadays most devices use smps to convert ac to dc. Even motors are coming in DC like the BLDC motors more efficient and not much initial surge current.

[@dieselbossbrandon]

Your a very smart man. I learned a lot from two of your videos so far keep up the awesome work :)

[@RiaRadioFMHD773]

"DO NOT REMOVE THIS TAG" *rips it off* LOL (XD)

[@slabrec11]

I have a 3000 watt inverter. Could you look at it I would pay for you time and shipping

[@carl2591]

I see this video has been around for a while.. Very funny and love the mini reefer with flammable liquid in front of propane cylinder. You for sure know now to Partieee... thumbs UPPPPPP....

[@jmrichsonsr]

Interesting but not practical. But it is the unpractical things that satisfies the ultra curious mind. I like all your videos.

[@muthatrucka76]

Heck..Get really wild and figure out how to make 240 volts from them.....or a way to make 3 phase from two generators and a small induction motor..That's what I need

[@SeanPaul-ee5ye]

Sooo... I know You mentioned the construction Could be an issue. I was not fortunate enough to purchase identical Inverters. So I recently purchased a Shumacher 750w, I now want to add it to My current slightly older Green Fuel 1000w. What do You think would be the outcome??? Is it plausible??? Watt variance an issue???

[@carltonpiercey9220]

Thanks. I have a 3kw 240v continuous and the infernal thing done plummeted. I tried to make a portable ev charger for my Chevy Volt w/ bad ICE. I wanted a bigger inverter because the ev charging cord shows 3100w during charging. But my lithium batteries may be insufficient. I'm going to open up my inverter and add solder along the primary tracks like you did. The setup did power a 240v cooktop burner. I am a traveller so I used a travel voltage adapter to attempt to run a space heater which the motor was erratic. And my guess is I may want to request refund on the inverter since it was supposed to be pure sine wave, so the question is why the fan was choppy. Oh yeah and I took the 3 50v battery packs and hooked them in series without inverter and they ran a 150w and 3 25w incandescents for a reasonable amount of time. So I'm spearmint-ing still. I'm about to fix my ICE if I can but tell you the truth I'd rather expand my HV battery pack for more range. But this and part 1 were very informative and hopefully will help me a great deal

[@unknownquantity4440]

@13:43. 🤣 I purchased both a container of flammable liquid and a propane tank full of propane just so I could attempt this project. Can you do this simply with 2 identical Pure Sine Wave inverters? Could is also be as simple as tying together the DC input high-voltages of the two inverters. Or, will it require modifying the control circuity of the inverters? I'd be really interested to see you try this experiment again with a couple of inexpensive cheap, Pure Sinewave inverters. A couple 300W or 600W inverters from Amazon?

[@jimmyvega7938]

Hi, I have "2" Xantrex Pro 1000w (2007 model) I would like to build a "mobile hand cart Generator," also I would like to hardwire both inverter to a small 2-pole (30 amp breaker box) to hook up an 240v outlet to run my lincoln welder ? to your suggestions will be really appreciated

[@badapplegarage9639]

What a waste of time. Just go buy a bigger inverter. It still sucks the same amount of power no matter what. I bought a Greenworks 40v 300 watt power inverter and I wanted to double them. Your video is truly a waste of time

[@davidjames1684]

How are these phase locked on the output side? Is this hack only possible on modified square wave inverters or also on "pure" sine wave inverters? I really don't see much point in doing this. It is a lot of work (and some risk) when you can simply just buy an 820+ watt single inverter. It would be nice if someone made a device that would take the output from 2 isolated inverters and would somehow phase lock the outputs of them. I don't think such a device exists, yet you are somehow doing it here. For example, here in USA we use split phase 240VAC (2 branches or "legs" of 120VAC ) that are phase locked 180 degrees out of phase with each other. If I were to take the output from one 120V output inverter and backfeed on branch of my house, and then take another 120V output inverter and backfeed the other branch of my house, it is possible that all of my 120V stuff would work, but my 240V stuff would not, as those 2 outputs are not phase locked. Even just sticking a voltmeter in the 240V out will not show 240VAC. It will probably be some low number that oscillates some. It would be nice if someone made a device that would take the 2 outputs from those 2 120V output inverters, and phase lock them (180 degrees apart) such that the 240V appliances have at least a chance of working properly. However someone could just argue why not just buy a split phase inverter with both 120V and 240V output and that would actually be a good solution.

[@joecox9958]

this method needs output stage MOSFETs can take 2x of designed power. At least for high power inverters say 1KW+, this condition could not be meet. Brand products won't leave that much tolerance.

[@OwlexMyth]

IDK why you think 6 gauge cable isn't ideal...satansatan.satan (800w/12vdc) amps isn't too much. 10 gauge doesn't even start to melt the insulation till over 100A.

[@Diy-For-Life]

Could potentially this concept work on other various size inverters? In theory obviously. Im sure there are other variables you cant account for in this question lol

[@weazeldark3983]

Ur idea isn't complete..... U need the out puts hooked together not the DC 120v supply One of the AC mains generators is taking twice the load and likely won't cope........ Wait u need to do is disable one of the chopper signal generators and wire it to the other chopper mosfets so both psu are running in sync But fuck that to heck........ Run outputs into a briged rectifier and get a few caps on it........... Get 2 microwave transformers Run another bridge rectifier backwards so have output as ac side Feed it to imput of one mot and hook up the ht sides together and u will get ac out put of all invertors hooked in on 2nd mots output to max tranny output Each inverter will need it's own bridge retifer only the bridge to supply bridge rectifier Now be4 u think I am lost Make a ac generator make a motor to motor hook up any motor that can generate ac will do and u drive one with another and u take the AC output and feed it to first mots mains input Something like 12v dc with regulator to control speed and the ouput other motor be 4~20v if like 12v dc motor and feed it through transformer sos 12v~30v in and it's rated for mains output don't matter the voltage it will output because all u need is pure sine wave output So wat it does is pulls the power out of bridge in ac sine wave and feed the transformer Simple pretty good output and works with all invertors Ur way needs to get the choppers to sync up if done properly As u done it ur overloading one invertors choppers to get 800w wen only can do 400w Unless they are higher rated than application then lucked out

[@SeanPaul-ee5ye]

Well... I was going to send you pics of the outs and inards if the units, you tube apparently does not allow that. My apologies for not being able to give you all the exact detailed parameters of My question

[@ebbcorepairs3253]

Great video, but who do you keep looking at above camera? ;)

[@nicholasbarba3022]

Your ammeter is calibrated 10x to high you are putting out 2. and 4. rather than 20 and 40 respectively as well as together they are putting out10 not 100 amps. Just an FYI

[@mrsmith1008]

You are not running these inverters in parallel. By connecting the battery input to the inverters in parallel but only using one inverted output, you are using one inverter as designed, but the other inverter is not supplying 120V AC to your load. What you are seeing is just the Inductor and Capacitor on the input stage of Inverter 2 as charge (and magnetic) storage devices. This is why you are seeing over unity results. The inverters used here appear to have inverted output components that were designed with a derating of 2x plus, but we cannot assume the same for all inverters. Hence, while you are providing the input stage with the ability to push 2x the power, there is a high risk of components on the output stage burning out from 2x the power on any given inverter with this setup. Cool trick of added power at the expense of overpowering output stage. Nothing comes for free :)

[@Dave96z34v2]

Refrigeration compressors you only get one shot to start them. If it doesn't get up to speed it will just sit on the over load relay and draw an ass load of current.

[@garyjones7044]

how long is your cord ok got that, 50 feet of 12 gauge is a pretty long run for any high current

[@808pathfinder]

Extension cords can change what your inverter can handle ,the shorter the cord the better ,keep n eye on the gauge wire in the cord when you buy them ,look for 12 gauge wire in the cord

[@velucluj]

I don't understand why is the output only on one inverter? Why not put in parallel the output also?

[@goranfreight4308]

What if they have same voltage but one is pure sine and one is modified. Can you run. Them like that?

[@GoingOffGrid101]

thanks for this video, love them and you knowledge on inverters!

[@Brokendiode]

That seems to work fairly well, considering that the DC-DC converter in those units are accomplished using an SG3525 switching regulator controller, yes you're right that the bridge rectifier stop's current from flowing back into the other inverters DC-DC converter stage However I can tell you that if you turn on both of those units, without having the high voltage DC in parallel and take a reading you will find that they are deferent by as much as several volts, but because of the fact that the SG3525's are very precision regulators, so which ever one is set the highest in voltage will try to take the full load until the current is maxed out, that is why you saw no change in efficiency when turning the second inverter on and off with a little bit more than half load on them, and it is also why you blew the fuses in the one and not the other. On some of these inverters they have a trimmer pots to adjust the high voltage DC, if those units have them you just need to adjust the high voltage to within a few 10's of MV of each other if there done with fixed resistors it's likely that they are off by quite a bit, and you should at least replace one of the fixed resistors with a trimmer pot so you can at least adjust that one too the other, you will get a lot better results.😉

[@josepeixoto3384]

Thanks,very good to know.

[@jacksmith3951]

nice video you do 2000 wattts inverter the same like your video you only one i see do this smart guy keep up good work

[@herbertcharles8606]

How do you balance the frequency of the 2 inverter at the same time.

[@kengine7]

You should get a dual trace scope and look at what is going on with the waveforms at the input side after the modified sine wave generator. I believe you are avoiding a lot of very important issues and post a video advising nobody try what you are doing.

[@josepeixoto3384]

up

[@gumnahs]

Awesome effort ! great video. I have been watching more and more solar, inverter videos. I circled back again to this video. I have a few queries : 1) Will the load be shared if the inverted are dissimilar( like one is a 1000W ) inverter. 2) What will be the case if one inverter is grid tie (ex: 300w) and I want to increase the output power to 500w by coupling a normal 300w inverter connected to a matching solar panel or a battery input. Please let me know your thoughts.

[@vinylapplying]

In theory when 1 of them max out other will kick in . I will do exactly what you ask.

[@ananominity]

How are you combining the load capacity of these in parallel with only one inverter feeding the power strip? Are they tied together internally? Couldn't you come out of each one with a 120v cord then splice them together in a j-box with a plug to feed the load? I'm wanting to do the same by adding additional inverters to my system to increase the wattage capacity to feed my house panel. I agree with how you have the battery +/- split to balance the DC voltage. If I use identical inverters from the same manufacturer they should all have pretty much identical output sine waves & voltage readings so there shouldn't be any reason for them to interfere with each other negatively. It will only be one phase 120v but I can work with that. Your thoughts?

[@knurlgnar24]

The inverters must be perfectly in phase or they will interfere and destroy eachother. I paralleled the boost stage of the inverter and used only one for the output stage as the limitation in these particular inverters was the boost stage.

[@murraychadwick9362]

I really learned a lot today! Thank you for your time!

[@kengine7]

Maybe try removing the gate connection on one of the choppers then parallel those to the other. I imagine the issue is simply out of sync waveforms.

[@djbare9]

This is what I was curious about, the wave forms would not necessarily be in sync, and it surprised that they kept working, the output combined wave form must have been a real mess.

[@antizakkonic7789]

Believe it.

[@garyjones7044]

He should have ran the too input stages through one output stage oh what that's just what he did

[@vinylapplying]

@@djbare9 Of what i understand after transformers there is a rectifier and DC, whit other words you don't need to sync anything.

[@numatechprototypes222]

No seriously can you hook two 12v inverters in series on the input to make it a 24v input then parallel the output like you did shouldn't the draw 12v each an share current?

[@ΠάριςΑζής]

Theoretically I think that this could be done, provided that both inverters would be absolutely identical, with their outputs paralleled as in this video. The current through them would be the same (due to their series primary connection and their paralleling at their secondary connection) and it's level would be the half one of what would be drawn to support a given load from one inverter only. Always theoretically...

[@matthewszostek1819]

do you think you could do this with house generators. I would like to build something comparable to a house with the main breaker open and multiple generators plugged into various wall outlets. its for a campground.

[@xanataph]

Ok...well it works...excellent...! :) Could you do this with bigger inverters? The only problem that I foresee is that the H-Bridge devices could be potentially be operating far closer to their maximum ratings than in a smaller model. Do you agree with that?

[@knurlgnar24]

For larger inverters you would need to make use of both the input and output stages of both. This would involve paralleling the output drive FETs and their respective drive circuitry which is more complicated than what I was able to do here.

[@erictheawesomest]

***** but would it be the same as you have done on the capacitor, just a simple bridge? i want to parallel 2 x 1500w inverters, so i would make a bridge to all three of the legs of the transistors plus the capacitor, and ill get something close to 3000w?

[@xanataph]

***** On the face ov it you could perhaps add additional mosfets in parallel with the existing ones in the H-Bridge to beef up a single output stage in what you deem the "master" inverter. However, I see a couple ov potential issues in that approach. a) If there were filter components following the bridge then they would have to be uprated too. b) There may possibly be some kind ov power monitoring arrangement that closes things down when the expected power lever is reached, even though now you have made it capable ov more.

[@erictheawesomest]

xanataph yea that is also an idea, just I'm not very electronically educated so (though it may be more expensive) if I could do the simple bridge between the fets it would save me going to school again lol, I guess I should try fiddle with a very cheap inverter before throwing money away.. Thanks for your input, you have given me a potentially better option if I can figure out how to bypass the filters

[@xanataph]

***** Strapping all the pins ov each mosfet between the inverters in the H-Bridge section would *definitely* be a bad idea. Because the clock signals in each unit will not be synchronised, and this would most likely result in a massive short circuit between both inverter's output stages, destroying them both. If you were going to do something like this what you would need to do is use one inverter as the master clock & send this signal into the gates ov the mosfets (or the driver chips) ov the slave unit. If you did this, you would not need to parallel any ov the high voltage connections around the mosfets at all, just the AC outputs as both inverter output stages would be in sync. However this really becomes a fairly advanced operation with electronics as it would involve tracing and re-routing these signals.

[@torbenchristensen7145]

Just what i neded for my cancrusher🙂

[@willikruger7683]

You paralleled those units, but only took power off one of them to drive your dummy loads. Perhaps you dhould hsve slso paralleed the 115 volt ends as well and the tried your experiment.

[@EVZebra]

+Willi Kruger You missed part one this is part two.

[@versatec1]

Will the invetters still work in parallel without connecting the capacitors together? Thanks👍

[@ivic1112]

Can i just use 3 inverters.One off grid to provide voltage reference and then connect 2 grid tie ones that can normaly sync in my small grid?

[@tommyb.6064]

Well, i had run a mini fridge on a single 400w motomaster inverter, a fridge really similar as yours on a decent steady power source and it would just start right away, there was still some space on the inverter for cell phone chargers.

[@murraychadwick9362]

40, 40, 40,.amp fuse 😂 try a 50 😂

[@overthetopcargotrailerjerr2278]

🤮🤮🤮🤢🤢🤢🔥🔥🔥👎👎👎

[@101belcore]

Hi, This is Peter from Hungary.I would need your advice.I am driving an old electric car running on 110 Volt DC (110 volt lowest, 149 volt highest charge) Would love to use an inverter to run an aircon 220V. How would you down convert 110 volt DC to use a 72 volt to 220volt inverter. Or how would you convert 110 volt DC to 110 volt AC to use a 110 Volt aircon? or any ideas anyone? thaaaaanks

[@knurlgnar24]

I think your best option will be to determine exactly what nominal battery voltage you have and purchasing an inverter that accepts that input voltage. I have seen 120VDC input inverters on eBay and the like but know little about them. High voltage DC makes me quite nervous though, and despite the relatively dangerous stuff I do in my videos I wouldn't personally play around with 120VDC batteries without some Personal Protective Equipment and other safety measures.

[@101belcore]

@@knurlgnar24 Thanks so much.I have been searching as well and have yet to come across a 120 volt dc input inverter. I will have a look again. thanks again

[@aterack833]

frist of all im gonna try this fridge, because we wernt able to try it last time, this time i have this electric heater blowing on it, now it thinks it hot in here, and it will be more than happy enough to run, so, this is a 55kw? lol

[@muhannanasser4566]

thanks for the video .. i wounder if you tried connecting more than TWO inverters . like 1000+ 1000 + 1000 = 3000 can you do that ???

[@niceblokeray4455]

How are you linking both outputs on each inverter to produce 600w?

[@knurlgnar24]

I'm using the output stage on just one of the two since it was overbuilt vs the boost stage.

[@bayerbear6770]

I wonder if a 1500w mod sinewave inverter could be boosted by extracting the dc intermediary from an inverter-type gasoline generator..? This way one could use battery for most items, but start up a generator outdoors for when you do power appliances.. Perhaps with a rectifier for safety... Hm..

[@ISCFworld]

was ur bar fridge 12v or 24v? ive just brought a 1600w Pure sine wave invereter an it wont run the little barfridge

[@knurlgnar24]

What brand/model inverter? I am not surprised. Most 1500W inverters are marketing 'scams' and don't really provide what you expect. The other variable is battery and cabling. You will need one very good battery or two in parallel along with some nice thick, short cabling to connect it all together. Fridges take a nasty surge to get started - probably close to that 1600W level. Once running they will only take a couple hundred watts at most.

[@surenbono6063]

...that does not make sense...little confused...but if both inverter output is connected to a single extension than mybe it makes sense... here in this demo you just used the top inverter output...to work 800w load just by turning On the lower inverter..that means extra 400w is probably coming from the back battery input which is dc...mind boggling..but awesome experiment..is it true?...you should get a pure sine chinese 10000w inverter to run motor load like an air conditioning unit to reward yourself for this video..

[@omaralvarado1080]

Do three inverters then do four inverters😮

[@tsamuel6224]

More fun than practical. Would also be fun to watch you make 240 by synchronizing the outputs - again, more fun than practical.

[@BoogWar01]

Hmmmm..... Thinking that if you parallel the input source, use one inverter's drive circuit to signal the input side of both inverters, but invert the signal somehow on one of them, you could theoretically connect your load across the hots and double the voltage. May be you would get a small scale version of an Independence Day fireworks show; but then again, maybe not!

[@BCElginTex]

So could I wire up 10 inverters to power my 30 amp RV or 30 inverters to power a 50 amp RV, similar to this way? Maybe jumping all of the input capacitors together then having short 15 amp AC power cables come out of each inverter jumped to 6 gauge cables connected to the RV circuit breaker panel box? Not sure how to get the two 50 amp 120 volt legs 180 degrees out of phase with each other.

[@DMAN22yeah]

there are many things that wont work with that setup

[@bayerbear6770]

Watch part 1 first

[@michaelnotgivingyoumylastn3231]

omg this is so WRONG. you're only paralleling the input side and DC side.. you have to use the outputs of both inverters, this makes absolutely no sense. you can't use only 1 set of output FETs because the case and heatsink is only designed to dissipate 400W. sure you can overpower them for a min, but it'll easily overheat. DON'T DO THIS, you'll start a fire... you have to find the clock signal for the output fets, cut the trace on 1 inverter and add a wire to the input clock signal to the outputs FETs, add a wire to the same place on the other inverter and connect together. the also put the outputs in parallel and then you're done.

[@knurlgnar24]

You can't parallel the output due to phase differences and you cannot parallel the drive circuitry due to drive loading limitations. In this case the boost stage could handle double the power so it made sense.

[@michaelnotgivingyoumylastn3231]

@@knurlgnar24 you didn't read my comment. the boost stage can not handle more than 1 supply's worth of power for an extended period of time. you tested for a few seconds.. that's not a valid test since the heatsink wont have time to be saturated with heat... it will not run continuously at 2x power and you're crazy to think so. there is basically no load on the clock signal, its just a PWM to the output fets. you MAY lose a tiny bit of voltage off the top of the signal, but that wont change the operation. this will fry the output fets or start a fire if used like you said, on continuous max load

[@abdulmajithg]

is it possible to amplify the power than the battery has already ..? any one, please help me to understand.. inverter maximizes the voltage.. so what about electricity..? p = vi ....

[@omaralvarado1080]

😮😮😮😮😮 So it definitely works😮

[@jeffmccrea9347]

Your experiment in overloading inverters is baffling. Those 410 watt units claim that it'll put out double to start but what most people don't know is this is for 1/2 cycle. Also cheap inverters don't do well with long extension cord runs as it fools the overload protection circuits. Heavy starting loads like fridges usually need three times the power to get their compressors to start. There are so many things that you have done wrong on so many levels. I have a 750 watt Shumaker inverter that won't start a 400 watt angle grinder on it's first try. You said a 13 amp saw draws a lot of current to start but doesn't need a lot of power??? If an electrical device doesn't need a lot of power, it won't draw it. Electrical devices only draw what they need.

[@javaman2883]

It's an economic measure. The company probably makes multiple models, and the output stage probably does not have much cost savings going with components matched to the power output, so they just use the same output stage on say the 100 to 1000 watt models. Which makes sense because the output is lower current. The input stage has beefier components due to handling the higher current. So there is savings by matching the input stage to the desired output of that model. Thanks for a well thought experiment.

[@badapplegarage9639]

About 17 minutes too long. You could have shortened the video

[@davidjames1684]

Those are not cables. You claim to be knowledgeable of these type of setups, yet you wrongly call those red and black insulated things cables.

[@antizakkonic7789]

I have to confess I didn't know how to take you at first- ultimate geek troll or genius with a tweaked sense of humor? I have determined it is the latter. Did I mention that I enjoy really bright people with a tweaky sense of humor? ; )

[@Syncere20]

I really like your videos, The 5500 btu window a/c , About how big of a inverter is needed to run only on battery power ? also do you think 24 volt inverter is any better than 12 volt or it doesn't matter. Thank you for your very helpful videos.

[@gelumiro1160]

hi dear friend I do qusto I also work with 2 inverters of this model? Softstart Spannungswandler 12V 3000 6000 Watt Inverter E8 Wechselrichter thanks

[@knurlgnar24]

This exact method would not work with 3000 Watt inverters. You would need to synchronize the output stages and tie the input stages together.

[@gelumiro1160]

***** hank you so much, you've been very kind please I might make a video more detagliato with the Shema of operation Best regard

[@edcglassworks5771]

Great content. Great video.

[@royfullmer7844]

One major problem you can't measure DC Amps with a clamp on Amprobe NOT possible.

[@fassphoto]

The same way we ( Convert 3 phase AC to Single phase AC Circuit ) , we complete isolate one from other, than we mix again and adjust the outside volts and amps, using oscillators circuits and big MOSFETs, what do you think, if we do the same with 2 or more (absolute-same) inverters. connect they individual input to the same OR different battery bank, get they individual output and treat as individual AC phases, and than ( Convert 3 phase AC to Single phase AC Circuit ). Please let me know your thoughts, Please let me know if I am not clear on my comment. best regards and please keep rolling.

[@knurlgnar24]

If the inverters are prefectly synchronized and connected in series it could conceivably work to double the power and double the voltage, but fault conditions such as overload will cause one to shut down potentially before the other damaging the units.

[@allenwrench990]

***** Okay, glad you cleared that up. I was thinking that the synchronization would still oscillate even slightly. Wish I could see this on like an oscilloscope. I'm so behind. :(

[@tonysmith7283]

The junction temperature of the output transformers when doubling the output power, would necessitate consideration of the heat sink design, otherwise, some form of thermal overload protection.

[@harryonnekink3686]

Hi! Why are you running a white and a black cable between the 2 poles of the batteries in parallel? Thanks for replying.

[@milvolts1]

Really impressed of your video it was awesome I learned some new stuff. Like buying a better amp meter amongst other things . I have a question and crossing my fingers you're still answering them. I have a 12v lit ion battery and would like to know what size inverter I can use? Thanks

[@MrDolfo1]

Used pure sine wave inverter with a surge current three times as RMS (continues current) to run a motorized appliances. Motorized appliances has a surge current to start.

[@chrisw8415]

I have two inverters a 5000 watt and a 3500 watt if I increase the 3500 watt output voltage capacitor to match the 5000w I can effectively run both inverters tied together with no issues?

[@user-ix3xr2od9m]

I know you like to experiment with things and ideas... so here's a BIG one for you and anyone that cares to comment on it. what would happen if you hook a grid tie inverter to a non grid tie inverter? will the grid tie feed back AC into the non grid tie? will that make grid tie a charger to the batteries since it's been fed AC?

[@ctscantechnologist]

You're really sharp...

[@sodiumtechnologiesug366]

This was great,I liked it

[@EvenStarLoveAnanda]

Thanks for all the good info. I recently blown my Sunforce 2500 W inverter. So I am looking for a 3000 W Pure Sign-Wave inverter. I am willing to spend up to $500. What is your best recommendation? I run a 3/4 Hp veggie oil pump in my truck. And I need Pure-Sign because I also run a PA system off of it sometimes. If you are interested I could give you my blown Sunforce if you are willing to pay for shipping. I am sure you can fix it. :0)

[@rich1051414]

+EvenStar LoveAnanda It blew because Sunforce inverters are overspec'ed. AIMS makes a good inverters for the price, but the 3000w+ is around $700. The only decent 3000w+ pure sine inverter for cheap I have found is the Nimble NM3000. It isn't perfect either, it has a 36 watt standby with no remote shutoff, which can be a problem. Some people have told me the standby is as high as 100w on some units. If that matters would depend on the individual use case. The NM3000 is usually selling for around $500. It can do double its spec'ed power output for about 5 seconds, which I found quite impressive, before the overcurrent or temp protection kicks in. Thats enough to start nearly any inductive load. However, it does have problems with starting inductive loads if already near its 3000w limit, which I assume is because of temperature protection. That is pretty understandable, as you should give yourself about 500w headroom for inductive loads anyway when deciding how much power you need. It would perform better dealing with inductive loads when near the current limit in cold climates and worse in warm ones I assume. Beefing up the cooling could help with that too I would guess. I predict it would perform pretty miserably if confined in a space that would limit airflow though if planning to run it at the full 3000w quite often, as it does seem quite warm when there.

[@Totogita]

The current clamp on meter , what model is that? If you please can you go over current meters dc a ac types Thank you

[@slicknickrules]

What size ring on wire

[@fassphoto]

i guess you did not understanding what i sad, but its ok, i like you videos any thanks for your time and keep on with the good work, i been learn a lot with your videos. best regards, fassphoto.

[@fernandorivera2022]

I am doing a stand alone system with solar panel using this brand name inverter. Do it is possible to use the alarm of the inverter to add a relay hook to a charger with the on grid that allow to charge the batteries during cloudy days?

[@billa9954]

Because the leads to the batteries both go to the same battery, the other battery has an additional length of wire giving it more resistance. Thus it won't discharge as much and won't charge as much. Move one of the leads to the inverter to the other battery. The the voltage across both batteries will be the same and both will charge and discharge equally.

[@leerman22]

My preferred emergency electric heater is a shorted out car battery :)

[@garyjones7044]

Ive had that inverter for a couple years its had some major abuse and just keeps ticking

[@firesblade1888]

so what did you try to proof

[@markalcomdmarcos7132]

You look like Stu (hang over movie) Stuart Price 🤣🤣🤣🤣 nice video !

[@faffaflunkie]

So can you get _800 Watts_ out of _each_ inverter? How about at the _same time_ to power different items?

[@ajayeveron4435]

Superb piece of knowledge. Awakening and educative.

[@Hrod750]

If you boost the input and output stages with more caps you can probably get the power saw started and the vacuum.

[@plasmar1]

I like this as it gives me a easy hack to potentially make a dirt cheap 24v inverter:P

[@crispicrit]

on your air conditioner i start it without the compressor running with just the fans after the fans are turning activate the cooling part.