LED appliance lamp teardown and modification. (with schematic)

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bigclivedotcom

bigclivedotcom

Күн бұрын

Пікірлер: 323
@mbaker335
@mbaker335 7 жыл бұрын
I once lived in a modern flat that was very well insulated. I took out the energy saving light bulbs and put in some tungsten lights I had hoarded. The result was I did not need to use the gas central heating. Overall I think that was a lower carbon solution and worked well.
@bdot02
@bdot02 7 жыл бұрын
How does power factor effect the power companies? Or doesn't it? If you were using a portable generator would power factor become important?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
They do have to allow for it with heavier cabling and transformer equipment. With a portable generator you would only be able to run a reduced load with poor power factor.
@alfoncejean8826
@alfoncejean8826 7 жыл бұрын
bdot02 power factor is actually a big deal if you are a electric supplier they everything they can to keep the closest to 1 has possible. big consumers( mostly factory) get charged for power factor. And probably every one will soon be charged for it.
@bdot02
@bdot02 7 жыл бұрын
Alfonce Jean so then those giant capicitors sold as power saving devices will actually do something
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
The capacitors sold as power saving devices are a rather crude way of affecting an unknown power factor. If the power companies start charging for apparent power in the future, these devices could actually COST you money if you plugged them in.
@techtastisch7569
@techtastisch7569 7 жыл бұрын
@ bigclive Can you make a tutorial about powerfactor and co just like you have done it with your guide into electronic components? I'm looking into this subject even though I'm only 16. Non of the tutorials i have seen so far explain it well enough, so could you please make a tutorial about it?
@stridermt2k
@stridermt2k 7 жыл бұрын
A friend at work had to chuckle when in the middle of working on something rather complex he brought me an antique ceramic light bulb socket and got all happy over it, cleaning it up and checking it out. "Geeze, you work on all this crazy shit and you still go nuts over something simple like light bulbs?" Yes. Yes I do. It's a lamp thing, not everyone understands.
@CurmudgeonExtraordinaire
@CurmudgeonExtraordinaire 7 жыл бұрын
Last I checked, you can still get the ceramic light bulb sockets at Home Depot. When I put lights in my attic a few years back, that's what I used. Best I remember though, that was before the CF and LED lights became affordable, so all the bulbs I put up there were incandescent. They don't get used much, so they most of them have not burnt out. The ones who have, I've replaced with CF bulbs that have been removed from other lights have have been changed over to LEDs.
@colinweiss5175
@colinweiss5175 7 жыл бұрын
Could you do a comparison video between a dimmable and non-dimmable mains-powered LED Lamp? It would be interesting to see how the power-supplies differ between the two types.
@joinedupjon
@joinedupjon 7 жыл бұрын
Was secretly hoping the rubbery filament from a couple of weeks back was going to make a reappearance as a curly wurly testtube lamp.
@slimysi99
@slimysi99 7 жыл бұрын
beat me to it :(
@yuriismywaifu203
@yuriismywaifu203 7 жыл бұрын
That would look cool.
@peterlindsey4178
@peterlindsey4178 7 жыл бұрын
Fourthed... cmon, Clive. :)
@ahettinger525
@ahettinger525 7 жыл бұрын
Would have liked to see that too... that would be awesome!
@ilaril
@ilaril 7 жыл бұрын
I really do like the fillament lamp more. I like how it looks old-ish, yet bright. These are the videos that make me wanna try these things myself! And for all of that, I thank thee.
@trikky2.2
@trikky2.2 7 жыл бұрын
Just wanted to say a quick thanks to Clive, really enjoy your videos. You got me interested in analogue electronics again and have signed up with the Open University with the idea of doing an analogue electronics course ... Just doing a couple of basic modules first.
@RoachDoggJR4200
@RoachDoggJR4200 7 жыл бұрын
Clive must have the most well lit house on the planet.
@rogerbarton497
@rogerbarton497 4 жыл бұрын
Another way round the ban on filament bulbs is to buy "rough service" bulbs, they are non-domestic so don't come under the ban.
@ecospider5
@ecospider5 5 жыл бұрын
I just noticed the capacitive dropper led lights almost always have a cover of glass or plastic. Which makes sense since there is mains voltage at the leds. The bulbs without a cover I’m assuming uses a switch mode power supply where the transformer gives safe separation from mains voltage. If I have understood this right this is purely do to this channel and explaining the power supplies over and over. So thank you for that.
@bigclivedotcom
@bigclivedotcom 5 жыл бұрын
Unfortunately some of the lamps on eBay with bare exposed LEDs are live at mains voltage. It's better to treat all eBay lamps with exposed contacts as being potentially live and not touching them while they are in use.
@ecospider5
@ecospider5 5 жыл бұрын
Good to know. Thank you.
@rounakr94
@rounakr94 7 жыл бұрын
What is the best colour temperature for a led tube light to be used as a reading light?
@sbusweb
@sbusweb 7 жыл бұрын
Ideal depends on the individual, and the room its' used in, and so on (a design aspect too). Don't forget about Colour Rendering (CRI), modulation, contrasts... Some prefer lower and higher CCT's, but in any case being able to set a sensible brightness suitable for the individual matters, as does avoiding flicker/modulation that can cause many people headaches / loss of concentration reading, etc...
@vabu94
@vabu94 7 жыл бұрын
Rounak Roy If you mean for before bed reading i'd go for a warm light (1800K - 2700K). If it's for studying or reading that requires concentration, a cold light is better (4000K ->).
@rounakr94
@rounakr94 7 жыл бұрын
FindValdo yup, for studying. A 6500k would be better?
@vabu94
@vabu94 7 жыл бұрын
Rounak Roy I have a 7000K desk light which for me is a little too much. So i think 6500K is my sweet spot. You have to try out for yourself but get one that doesn't flicker visibly. That will cause a headache in minutes while reading.
@rich1051414
@rich1051414 7 жыл бұрын
Cool lights contributes to alertness, but also headaches. Find a good balance. I like 4000-5000k(natural white).
@slimysi99
@slimysi99 7 жыл бұрын
I wonder what your rubbery bendy led strip would look like coiled in that tube?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
I was thinking of that, but it would never fit in.
@any1alive
@any1alive 7 жыл бұрын
thats what she said..... im sorry, but i was thinking the same tis a shame that it wont fit
@agentbertram4769
@agentbertram4769 7 жыл бұрын
Attach the health and safety officer across the live and neutral terminals of your test block.
@Mr.Unacceptable
@Mr.Unacceptable 7 жыл бұрын
I was working on replacing dead halogen bulbs with LEDs that fit down the small hole. I was changing them to red/ blue grow lights for the greenhouse. They have good diffusion and thick glass. Nice timing on this I like your solution better. Now I just need to find a source of those filaments.
@FireSwordl
@FireSwordl 7 жыл бұрын
I bought very very similar ones for my kitchen absorber. The normal 40w ones were burning like hell , and I decided to go LED. I was very surprised to find out the body was made from transparent rubber. I must say they work without issues, and you feel like you can throw them towards the wall and they won't break....
@bikkiikun
@bikkiikun Жыл бұрын
I imagine it would be possible to add a small smoothing capacitor on each of the three boards. Or does that run the risk of overstressing the capacitor in the AC side?
@bigclivedotcom
@bigclivedotcom Жыл бұрын
As mentioned in the video, the smoothing capacitor would initially start at a zero volts resulting in much more electrical stress for the ceramic capacitor due to it dropping the full mains voltage.
@garyslatter9854
@garyslatter9854 5 жыл бұрын
'Not health and safety rated' - your a hero!!!
@GadgetBoy
@GadgetBoy 7 жыл бұрын
can you do a blurb on calculating current drop for these types of circuits?
@kajyakuzonik9130
@kajyakuzonik9130 7 жыл бұрын
I enjoy the use of physical photos!
@GreatJoe
@GreatJoe 7 жыл бұрын
What are the physical dimensions of that capacitor? That's apparently the first hint for how much voltage a component can tolerate.
@Gooberslot
@Gooberslot 7 жыл бұрын
Almost all the bulbs in my house are still incandescent. I tried an LED bulb once. It was supposed to be warm white but it actually was a weird yellow color that made everyone who entered the room look sick.
@1Andypro
@1Andypro 7 жыл бұрын
Clive - you've shown us the cheapie power supplies for various LED lamps. Could you find an example of what a high-end price-is-no-object SMPS psu for an LED lamp would be? One that perhaps offers mains protection from high frequency reactive power and is dimmable and outputs perfectly smooth and flicker free light?
@Soggstermainia
@Soggstermainia 7 жыл бұрын
bigclivedotcom It would be really interesting to see the origional pcb with rgb 5050 leds on it instead and see what the light output was like...
@martintakens-fjeldsaa2497
@martintakens-fjeldsaa2497 7 жыл бұрын
Not sure if this is the propper place to ask, but I am a little out of ideas of where to turn: I've been inspired to try to assemble my own filament LED lamp to get one suited to my needs (turns out it is hard to find one that fits), but the final question I fail to find an answer for otherwise, is how to attempt to make it dimmable? -I see a lot of filament bulbs online listed as "dimmable", but to my experience not all of them are. This tells me there mus be some of the initial circuit that regulates how the filament reacts to e.g. trailing edge dimmers? So the question then is what else will i need to add to the circuit between the socket and the filament, besides the diodes, resistor and capacitor that were listed in the prior DIY filament bulb video? Thanks in advance for any help or tips, weather as for answers, or places i can look/ask! And also, thak you bigclivedotcom for these videos. Thery're both a great find, and a source for both inspiration and knowledge!
@BLAZE13011
@BLAZE13011 7 жыл бұрын
Regulations on tungsten lamps? Never heard of that kinda wanna learn more about it
@aamiddel8646
@aamiddel8646 6 жыл бұрын
Hi Clive, Have you ever researched a electronic caliper (how it works, measureing principle)?
@bigclivedotcom
@bigclivedotcom 6 жыл бұрын
I believe it's a pattern of fine conductive stripes that act like a pulsing capacitor with movement.
@butchslagergio5486
@butchslagergio5486 6 жыл бұрын
@@bigclivedotcom Hi Clive, Thanks for the response. I think you are correct. But the question remains. How are the pulses made? A couple of years ago i tried to unraffle the mistery. But i did not successen. BTW Nowhere on the internet i could find an explanation. I think to remember that the spacing between the (capacitor?) strips/bars on the slider are slighty different from the spacing on the stationary part. If so when sliding an interference may result in the capacitor value producing the pulses. Maybe one of your followers know the answer?
@jesuschal
@jesuschal 7 жыл бұрын
@Clive. Concerning power factor, would it be an idea to show us how to reduce power factor from a bad scenario (eg. limiting capacitor only) to an acceptable/modest level in the same didactic manner you did on your video "Using LEDs as mains indicator lights on 120V and 230V (live demos)"?
@MilesTailsPrower86
@MilesTailsPrower86 4 жыл бұрын
Putting diodes in parallel without any resistance on each leg seems like a bad idea, doesn't it? I've run into bright lamps that did that, and I had 2 out of 2 fail in very similar ways, taking out many LEDs at once.
@MRCNC1967
@MRCNC1967 4 жыл бұрын
Every time I hear "Poundland" the teen in me comes out and I chuckle!
@l3p3
@l3p3 7 жыл бұрын
Why do you have 244 volts? I get 219 out the outlet. Does the grid supply 250 volts to houses and it is just the voltage drop in cables which produces the average of 220/230v?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
+L3 P3 The standard UK supply is typically 240v but is gradually being harmonised with Europe at 230v. At the moment the standard allows a range either side of 220v to 240v to cover all the different European voltages.
@RJARRRPCGP
@RJARRRPCGP 7 жыл бұрын
I suspect the north is more likely to be 240v and the cities, especially London, more likely to be 230v...
@amojak
@amojak 7 жыл бұрын
here is a thought on PF Clive, replace the 680R resistor with an inductor of similar impedance to the cap. this should bring it up close to 1 .
@nraynaud
@nraynaud 7 жыл бұрын
your remark on Health and Safety made me wonder if there is a whole youtube community on the topic with videos of people stopping the work, unboxing safety glasses, cutting the cord on grinders having a latching switch and discussing how to generally annoy people.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
There is. Mainly asshats making "safety" videos that indicate they have no experience of working in the areas they claim to be experts in.
@spikeydapikey1483
@spikeydapikey1483 7 жыл бұрын
I hope they go view AVE's channel ;o)
@slimysi99
@slimysi99 7 жыл бұрын
+1 for 'asshats'
@daranleighton9813
@daranleighton9813 7 жыл бұрын
Common sense is being 'phased out' in favour of ridiculous and unnecessary health & safety laws. Darwinism is no more and the human gene pool is suffering as a result. In a few more generations we will be nothing more than a species of mindless drones incapable of processing thoughts unless given basic instructions from the hierarchy. The zombie apocalypse is coming!
@paulsengupta971
@paulsengupta971 7 жыл бұрын
I went to a restaurant with some friends last night. The waitress informed us that the crème brûlée was off the menu due to health and safety issues from head office about the blowtorch used to melt the sugar. And that's in a kitchen with flame grills and many sharp knives.
@hommie789
@hommie789 7 жыл бұрын
Clive how is power factor effected by hertz? I see in the UK you run 50 hertz but in north america we run 60 Hz would the power factor increase or decrease if we just plugged that UK version of a lamp into out power.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
It would be the same.
@amojak
@amojak 7 жыл бұрын
it would be about the same, the difference in frequency is not significant .
@lorenhusky2717
@lorenhusky2717 7 жыл бұрын
How well do you think these would work in the fridge?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
+Loren Husky LED lamps are ideal for fridges.
@hmarc417
@hmarc417 2 жыл бұрын
Since the cover is plastic will it function in an Oven? or melt. Some of the things i bake takes 450F.. Just wondering.
@hene193
@hene193 7 жыл бұрын
The funny thing about the regulations of those older tungsten lamps is that when they were discussing about it they said that the problem is that the lights produce a lot of heat. And here we people in north were laughing like what does it matter. Most houses are heated with electricity anyways so does it matter how I produce the heat. Heat is heat :D I guess it's more problematic in warm parts of the world tho...
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
It is a bit silly here in the UK where the heat is generally required anyway.
@hene193
@hene193 7 жыл бұрын
bigclivedotcom Well I live in Finland so yea... But I guess it's major problem in Spain and so on.
@webchimp
@webchimp 7 жыл бұрын
I see you've padded you caliper case to stop the on button hitting the lid too.
@TINKSTAYLOR
@TINKSTAYLOR 7 жыл бұрын
Hi Clive i bought some of these lamps for my cooker hood but the hood uses soft switching so they ether come on and glow by themselves or wont switch off fully. Is there a way of modifying them to turn fully off when switched off. Thanks AL.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
If they're not an excessive nuisance then you could just leave them glowing as a handy kitchen night light. The only difference between the old tungsten ones and the new LED ones is that the LED lamps are so sensitive that they make that slight leakage current (probably through filter/snubber components) visible.
@TINKSTAYLOR
@TINKSTAYLOR 7 жыл бұрын
Hi thanks for that ,I'm not bothered but the misses does not like the glow from the kitchen lol.
@dimitridekoning
@dimitridekoning 7 жыл бұрын
Hey Clive! How are you doing :) i have a question, i filled my house with led filament lights, pretty nice lights, 1,9 watts, but there is a problem, the powerfactor, it's not that great 0.5, here in Holland all the houses are getting these "smart" electricity meters and these meters also do measure blind current (dont know the right name for it) caused by the bad powerfactor, is there a way to upscale the powerfactor in led lights? Or to compensate the total blind currency of my house? Greets, Dimitri
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
It's not easy with the odd load of LEDs, but the power is low, so for the number of lamps you have it shouldn't be too significant.
@pizzablender
@pizzablender 7 жыл бұрын
They do not charge you for the power factor, do they? It is just indicated. In any case, teh low-cost dropper capacitor lights have poor power factor. There exist LED bulbs that have the mains, then a bridge rectifier, then a chip and transformer and then a capacitor. Those are power factor corrected but they are bigger and a tad more expensive.
@severs1966
@severs1966 7 жыл бұрын
Why is the quick-disconnect box plugged into the HOPI via an adapter? Another video appeared to show that a UK plug would plug into the HOPI directly, judging by its socket-terminal-holes layout.
@RenThraysk
@RenThraysk 7 жыл бұрын
HOPI has some terminals for poking bare wire in, and they get in the way of larger plugs. So needs a standoff.
@alfoncejean8826
@alfoncejean8826 7 жыл бұрын
Mark Severs he already explained it. the hopy got big wire conections that are in the way of those oversized UK plug ( seriously what the deal with those big ass plugs?)
@severs1966
@severs1966 7 жыл бұрын
The plugs are big because (1) externally, they have chunky brass pins to carry 13A without getting hot, spaced far apart because it was designed for RMS voltages that might easily be around 250V, and because (2) internally, there is a compulsory fuse and chunky terminals to accommodate thick wire (see (1) )
@JonathanWinterflood
@JonathanWinterflood 7 жыл бұрын
He mentioned in a previous video that it is because the 'loudspeaker-style' connectors under the socket interfere with the cable on the plugs, making it impossible to plug them in properly without the death-dapter in between
@danielthechskid
@danielthechskid 7 жыл бұрын
As a person in the USA, UK plugs are not oversized considering they all have a proper HRC fuse in them.
@dataphool
@dataphool 7 жыл бұрын
does the power utility charge a surcharge based on the power factor. I just checked the local utility charges a 80% surcharge for a pf less than 50%. Although, lights are the least part of the utility bill.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
The home meters usually just charge for actual power here and not apparent power.
@superdau
@superdau 7 жыл бұрын
Not in a domestic setting (the usual domestic meters only measure "real" power). But for large consumers they charge for it.
@dataphool
@dataphool 7 жыл бұрын
Yes, however the utility gets a real hard-on (I have heard) if they discover a high pf in a customers facility.
@andysworkshopuk
@andysworkshopuk 7 жыл бұрын
Jim MacLaughlin industrial customers in the UK are charged for apparent power, domestic customers for true power. I'd like to see Clive do a video on this. In recent years the domestic household has so many more devices with a reactive component than we used to have. Are we loading the utility companies without being charged for it?
@superdau
@superdau 7 жыл бұрын
The power hungry devices in a home environment are still mostly heaters. Devices that aren't, but use more the 75W (I think) need to have power factor correction built in.
@90msg90
@90msg90 7 жыл бұрын
In Poland, tungsten lamps are sold as 'special use' lamps or 'shake-proof' to avoid the same regulations :). Cheap and 'efficient' as before though ;).
@mattburrows2615
@mattburrows2615 7 жыл бұрын
Hi Clive, I have found your videos very interesting and educational over several years. I thought possibly you may be interested in the circuit of the Nokero (No-Kerosene) N220 solar powered led light so I thought I'd mention it. It has helped many people in developing countries. I got one and it works well.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
I have what is probably a copy in the pile of stuff for the future.
@JPennDotCom
@JPennDotCom 7 жыл бұрын
I think the filament LEDs give it a nice effect. I wouldn't be surprised if you find them in Pound-land soon as decorative outdoor lights.
@BPantherPink
@BPantherPink 5 жыл бұрын
The digital vernier callipers... from Poundland too, Mr Mitchell ??
@bigclivedotcom
@bigclivedotcom 5 жыл бұрын
I'm not sure I'd trust calipers from Poundland. They came from an electronics distributor.
@jankahoun1902
@jankahoun1902 7 жыл бұрын
Here in Czech Republic they are selling the old resistive lights as "heat bulbs", one seller even have a patent for that :D
@Markle2k
@Markle2k 7 жыл бұрын
Unless they have patented a unique process previously unknown, that patent isn't going to be enforceable outside the Czech Republic. Manufacturers have been using incandescent bulbs for the purpose of high-intensity heating for well over half-century.
@RWBHere
@RWBHere 7 жыл бұрын
'Heat lamps' have also been around for at least 75 years. One type was even sold for use in bathrooms from the 1950's onwards. Others have been used for keeping pets (lizards, snakes,etc) or plants warm.
@keesklerk3244
@keesklerk3244 7 жыл бұрын
where did you get the "hopi" meter from?
@jkobain
@jkobain 3 жыл бұрын
Such a rare case when conservators truly support progress, lol.
@matthewbeddow3278
@matthewbeddow3278 7 жыл бұрын
I do like the LED filament lamps but they are quite expensive Cheers Clive
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
+matthew Beddow They're getting cheaper over time. I bet they appear in Poundland soon.
@matthewbeddow3278
@matthewbeddow3278 7 жыл бұрын
Yer that would not surprise me Cheers
@davidjones9730
@davidjones9730 7 жыл бұрын
Clive, I'm probably being naive but are these SD capacitors rated as X types for mains? I guess they just blow open circuit when they fail.Thanks for another great video.
@jamesharris8110
@jamesharris8110 7 жыл бұрын
I wonder what's the lowest voltage they will run at?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
The long series string of LEDs means they are only really suited for a modestly high voltage.
@shockwavecity
@shockwavecity 7 жыл бұрын
Is there a post office box for clive listed somewhere? I've got something i'd like to order to you.
@dztrbdgod
@dztrbdgod 7 жыл бұрын
What is the device you are using to measure the consumption of the light?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
+dztrbdgod Hopi power analyser.
@dztrbdgod
@dztrbdgod 7 жыл бұрын
Thanks mate.
@babylonfive
@babylonfive 7 жыл бұрын
Clive, where did you get yours? They are notoriously hard to find here in America IMHO.
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
I've done a search and can't find it listed.
@maxx_2245
@maxx_2245 7 жыл бұрын
Interesting fact, Clive! In Poland, people still produce Tungsten bulbs and sell them as 'heating devices' to skip regulations!
@irrelevantdotcom
@irrelevantdotcom 7 жыл бұрын
Nice. I do like your DIY lamps!
@CodyFurr
@CodyFurr 7 жыл бұрын
"It's Lit" -Big Clive 2017
@MrSkinner16
@MrSkinner16 7 жыл бұрын
Just watched another one of your videos. Awesome! Question...fav 18650 bought online for cheapest price but good quality? Thanks
@fargogemini694
@fargogemini694 7 жыл бұрын
Clive where can I purchase one of those Hopi meters?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
I got mine on eBay a while ago.
@hagaygodovanik4334
@hagaygodovanik4334 7 жыл бұрын
normal domestic electric meters do not take power factor into account. so a 2.5 real watt with 0.5 power factor will register as a 5 VA (watt) load. 60 degree lag between current and voltage.
@The_Last_Post
@The_Last_Post 4 жыл бұрын
Is it possible for these to be converted to run on USB power banks?
@bigclivedotcom
@bigclivedotcom 4 жыл бұрын
No. But you can get bright 5V USB powered lamps.
@grahamrdyer6322
@grahamrdyer6322 7 жыл бұрын
So how do I/we get the power factor to 1 in an led bulb.....I'm thinking of Smart meters now.
@Trainwreck144
@Trainwreck144 7 жыл бұрын
How does this lamp hold up in the heat of an oven?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
It would work in a cooker hood, but definitely not in an oven unless well shielded in the lamp compartment of a microwave oven. Even then I'm not sure how any internal RF leakage could affect it.
@twocvbloke
@twocvbloke 7 жыл бұрын
I bought a few similar, but smaller, ones for the fridge (as it's original filament bulb had popped), and they're definitely not as bright, and the flicker's annoying, and the "warm white" ones I'd got were pretty much green, which looked bad inside the fridge so I used the cool white ones, doesn't look "right", but at least it shows what's been left to ferment for too long though.. :P
@mortoopz
@mortoopz 7 жыл бұрын
Clive mate, how about a video about how to go about fixing a bad power factor?.. I remember doing it at collage but honestly have no clue anymore (20+ years later).
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
It's harder now. Back then we just had to worry about motors and other fairly uniform loads. Now the waveforms are all over the place with noise and harmonics.
@jackwhite3820
@jackwhite3820 7 жыл бұрын
The 4.7 MOhm resistor would only pass ~50 µA, worst case. I measured my mains tester screwdriver and it lets 80 µA pass through the body, so I would say from a health and safety point of view you are good, Clive.
@BedsitBob
@BedsitBob 3 жыл бұрын
"It doesn't matter which way it's put in." That's what I tell my girlfriend. 😁
@jcm4377
@jcm4377 7 жыл бұрын
45 instead of 48 LEDs total?
@sedationsounds7713
@sedationsounds7713 7 жыл бұрын
every time i see the HOPI meter I think of the readout thing inside the Delorean in Back to the Future
@Novalight2550
@Novalight2550 7 жыл бұрын
The filament version has a nice space for a smoothing capacitor.
@matthewday7565
@matthewday7565 7 жыл бұрын
That capacitor looks mighty small for a 470n of acceptable voltage rating. Also, I guess the series resistor is quite high to control worst case peak current to the LEDs, with no smoothing
@ADR69
@ADR69 7 жыл бұрын
we were told to use the "ELI the ICE man" thing to remember that voltage lagged in a capacitive circuit etc etc. never heard of power factor until I started watching these videos. Very interesting
@phils4634
@phils4634 7 жыл бұрын
How about soldering a high-value SMD cap across the rectifier output, and see how that affects things? Would the higher than design voltage across the current limiting ceramic cap cause it to pop a la Photonicinduction!! :-) Tantalum would give the capacitance needed but the voltage means MLCC unfortunately!
@Spiz103
@Spiz103 7 жыл бұрын
Perhaps solid state transformers will permit 100Hz supplies for lighting circuits (multiple supplies of different types to every user) which would permit much cheaper and less flickery LED lamps without requiring fancy DC switches/circuitbreakers
@NeneExists
@NeneExists 7 жыл бұрын
Now you bags of space in there, why not pop a nice electrolytic on the stand off leads going to the filament LEDs? As a bonus you may get to see the dropper capacitor undergo Rapid Unplanned Disassembly.
@RicoElectrico
@RicoElectrico 7 жыл бұрын
What happened to other stuff Michał sent you for teardown a few weeks ago?
@bigclivedotcom
@bigclivedotcom 7 жыл бұрын
I'm going to fit it in over time so there aren't too many similar items close together.
@mal2ksc
@mal2ksc 7 жыл бұрын
You know, in the filament lamp there is now room to add that smoothing capacitor you wanted. Then it really would look better than the 50-50 originals.
@BladeRunner21577
@BladeRunner21577 7 жыл бұрын
I suppose the next lesson for testing is to jam a cap directly into a mains socket to charge it up to use as a power source BigC
@Weatherman1024
@Weatherman1024 7 жыл бұрын
Can't they make an electrolytic capacitor in an SMD package for applications like this? Since most components today can be apparently miniaturized.
@NeneExists
@NeneExists 7 жыл бұрын
Weatherman1024 - they do; it's a small round electrolytic in a plastic case and terminals that come out to tabs.
@michaeltempsch5282
@michaeltempsch5282 7 жыл бұрын
Pictures: www.mouser.com/Passive-Components/Capacitors/Aluminum-Electrolytic-Capacitors/Aluminum-Electrolytic-Capacitors-SMD/Images/_/N-75hqx
@RambozoClown
@RambozoClown 7 жыл бұрын
One from column A and two from column B? With six you get eggroll?
@ur_a_buS
@ur_a_buS 7 жыл бұрын
You should totally teardown an LED headlight bulb, for cars 9005/H11 from nighteye or auxbeam. There seams to be one manufacturer that is later rebranded and sold under different names. The same bulb is sometimes advertised as having 9000lumen or 8000 lumen. I've always wondered what the quality of those COB led's are like, any "leaky" chips etc.
@curtisjmurphy
@curtisjmurphy 7 жыл бұрын
If you want to count the LED's on the filament just point your camera at it and close the aperture or raise the frame rate.
@joinedupjon
@joinedupjon 7 жыл бұрын
I think he needs some welders goggles - look proper steampunk with those on :)
@stevenbalekic5683
@stevenbalekic5683 6 жыл бұрын
21 5050 led chips is 63 leds is it not? Or am I missing something...
@SianaGearz
@SianaGearz 7 жыл бұрын
I want to know why HOPI says "Frequence". Maybe a teardown can clarify that!
@Mrboomal
@Mrboomal 7 жыл бұрын
It's the frequency of the incoming main power supply. Bit of Chinglish.
@SianaGearz
@SianaGearz 7 жыл бұрын
Oh don't spoil it. You want a teardown don't you?
@johnpossum556
@johnpossum556 7 жыл бұрын
Clive: I enjoy your channel and I always learn something new but occasionally I wonder to myself "How does this guy not get bored of doing vids on lights, lights, lights, USB PS, Batteries, and more lights?"
@hoiyue9987
@hoiyue9987 7 жыл бұрын
It's an engineering thing. There's more to light than meets the eye!
@raymondj8768
@raymondj8768 7 жыл бұрын
thanks mr clive i was asking about the power factor thanks again your chanel rocks buddy !
@_BangDroid_
@_BangDroid_ 7 жыл бұрын
17 health and safety officers?
@RWBHere
@RWBHere 7 жыл бұрын
Maybe they are the same people who decided to label a tin of pilchards with the words, 'Warning! Contains *fish*.'
@jannepo
@jannepo 7 жыл бұрын
I guess that there is no reason they could not solder surface mounted capasitors between the LEDs in the three bar setup. There is no room in the base but plenty of space inside the bulb.
@MauroSedrani
@MauroSedrani 7 жыл бұрын
Very interesting, as usual. A lux meter can be useful for this type of experiment :)
@maicod
@maicod 7 жыл бұрын
Clive now the Chinese will copy your new design
@kenyon337
@kenyon337 7 жыл бұрын
I liked your big C, love your site From USA
@bulwinkle
@bulwinkle 7 жыл бұрын
Nobody who ever took no risk would achieve anything worthwhile.
@jayamd3579
@jayamd3579 7 жыл бұрын
okay ill bin them....i saw them in poundland weeks ago and bought some for my bedside lamp
@Bodragon
@Bodragon 7 жыл бұрын
"Deco-ray-tive" lamps? Oops! "Dec-ruh-tiv". Loved that millisecond self-correction! Keep up the good work. (Yes, I know I am tiresomely annoying. It's my Asperger's - no joke). And of course, no offence intended. If I can raise a chuckle with my moronic comments, then I am spurred and encouraged groanwards. All the best. xxx
@JohnnyX50
@JohnnyX50 7 жыл бұрын
couldnt you just shove a radial capacitor up inside the triangle shape then you'd have + and - at each end anyway :) that may give better range of capacitor to use :)
@mibars
@mibars 7 жыл бұрын
This must flicker like crazy!
@RODALCO2007
@RODALCO2007 7 жыл бұрын
Great video.
@peterlindsey4178
@peterlindsey4178 7 жыл бұрын
Does the product need a CE rating or kite mark to be legal to plug into a mains supply in the UK? .. by 'rating', of course, the question of actual rating vs a sticker that some cowboy has slapped on there... no way for you to know either way, of course. edit: of course!
@izrael2321
@izrael2321 7 жыл бұрын
big c I've been watching your channel and a sub for well over a year and I enjoy all your videos and content ,I have no complaints about circles you draw I respect your intelligence ..I look forward to more of your destructive and explosive videos ...🌋✌
@acmefixer1
@acmefixer1 5 жыл бұрын
He said that the incandescent lamp making businesses have been destroyed by the conservationists. Here in the States, Southern California Edison has avoided having to build a number of power plants by giving to customers steep discounts to convert to LED lights. In the Los Angeles metro areas the smog has bee n reduced by this avoidance of increases in power generation. Conservationists had little to nothing to do with smog control, and the same is happening in Chinese cities where thousands of people die each year from stifling smog.
@jazbell7
@jazbell7 7 жыл бұрын
At least the power company would rather you have a leading (capacitive) power factor, rather than a lagging one (inductive) as the lagging one demags their generators and they have to supply more rotor current.
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