Just a little tidbit. Two of those springy and twangy doorstop/bumpers mounted to a heavy base (or magnets also) make a great pair of helping hands for holding wire and terminals for soldering. You just have to bend and slip the wire/terminal into a section of the tightly wound spring. A decent sized base also will retain solder dropping also.
@donlunn7924 жыл бұрын
I now this is a while back ,but that is a great tutorial.Thats what I am going to build/use. Story coming up ! Way back about 1954 I was 9 .(UK) We just had our first TV. It always had problems, and the repair guy was at our house about every couple of weeks.He would always come in and discharge a large capacitor (as I now know),before working on the set.And He always used a screwdriver.Being interested in all things mechanical and electrical.I just asked him if there were a way that it could be done slower, instead of getting that large “CRACK” His reply was “Son, when you have worked on WW2 Radar.This is chicken feed, back in those days they were “real men’s capacitors.” My young thoughts were Wow! If this gives a crack! what must “they” have done? From then on I thought he was an electronics God.
@roncooke21882 жыл бұрын
The man with the Zip ties i use hundreds of them, great video interesting, music slight distraction Thank you!
@richardlloydusa2 жыл бұрын
Zip ties the new and very improved duct tape. I don't use the music anymore unless I have a time lapsed segment then I use it as audio filler. Thank you for watching, commenting and the valuable feedback. I appreciate it greatly. All the best. 👍😀
@sirsweetness83328 жыл бұрын
Thank you for your skills and the video. I just made one with a 5/20 ceramic resistor. I did not have braided 12 AWG so I used a strand of house 12. I made it long enough to bend the ends close enough for capacitor terminals. getting ready to change out magnetron on microwave.
@richardlloydusa8 жыл бұрын
You are most welcome. I am glad I could help. Thanks for watching and commenting.
@sirsweetness83328 жыл бұрын
Update: used my tool tonight on old capacitor and new one received in mail. Used DMM to determine both capacitors were good but installed new one due to it being more in spec. Thank you again for your knowledge on this potentially dangerous equipment.
@richardlloydusa8 жыл бұрын
Happy to hear of your success. You are again welcome. Thanks for the feedback and kind comments.
@fredef14 жыл бұрын
richard, best video on this essential tool, thank you!
@bobbyy87114 жыл бұрын
Hello Richard, greetings from the Philippines, just finished watching this video, it is very informative, I have question, what I have right here is a 2W 39 Ohm ceramic resistor that I can get from a spare electric fan board, is this value of R can be used as a replacement. We are still on a lockdown we cannot go out and stores are still closed.. Looking forward..
@LovelyKauai5 жыл бұрын
This newbie think you have a great discharge tool, Richard and how cool is that discharge calculator. Question: 1. Using your example but changing the number from 30 seconds to 5 seconds yields just over 0.34 volts left to discharge. Can one assume that while so low a voltage may be safe to handle there could be a risk to some devices if one were to accidentally discharge the balance into that delicate device, 2. A slower discharge will encourage at longer life for the cap, and 3. It occurred to me to solder some extra multimeter leads in place with this discharge tool to watch and verify discharge instead of waiting. What say you and would those lead be soldered in series or parallel? Thx!👍
@CraigsClayMation7 жыл бұрын
Great video...thx for posting. Couple questions 1) How do you calculate the resistor wattage rating needed to safely handle a given capacitor? 2) Can you put an LED in-line to verify the energy is draining/drained.
@richardlloydusa7 жыл бұрын
I aim for a 30 to 45 second discharge time as I know that will not harm the capacitor. Here is the calculator I used www.learningaboutelectronics.com/Articles/Capacitor-discharge-calculator.php#answer as you can see the resistor value will vary as the value of the capacitor changes. Play with the equation to see what best works for you. You could build a discharge led circuit but I just rely on my Digital Multimeter here it is at Amazon: amzn.to/2mDiPZF Thanks
@CraigsClayMation7 жыл бұрын
Thanks for the reply. I was looking for more info on wattage requirement on the resistor, not the ohm resistance (drain time). I'm guessing a 1/2W resistor may burn out on an large HVAC capacitor. But a 50W will not. Maybe a better question is, how did you determine you needed a 5W resistor for this project?
@MrWilliepr7 жыл бұрын
Just came back to a/c repair ( retired and got bored ) and love the video. Always liked dong things the right way.
@richardlloydusa7 жыл бұрын
You are most welcome. Thank you for watching and the kind words. All the best.
@robertallen33115 жыл бұрын
Hello Richard, Thanks for your design and time on this video. Question; by using the calculator link you recommended here, I notice that by decreasing the resistance value, the time to complete the discharge also decreases. so in your rig shown here it takes about 22 seconds using the 10k ohm resister to complete the discharge but switching to a 1K ohm cuts the discharge time to 3 seconds. Is there a reason to keep the discharge time long vs. getting it done in a few seconds?
@richardlloydusa5 жыл бұрын
The slower discharge is "allegedly" easier on the capacitor and less likely to create discharge sparks on connection. Also the slower discharge keeps the temperature on the whole circuit cooler. Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
@evilgenius83793 жыл бұрын
I need to get me one of those auto-adjusting wire stripper tools!
@richardlloydusa3 жыл бұрын
Very handy indeed! Thank you for watching and commenting. I appreciate it greatly. All the best.👍😀
@viewer543224 жыл бұрын
Appreciate all the work and explainations. Cheers buddy
@TALENTADO656 жыл бұрын
very nice mr Lloyd ......awesome demonstration....you are now my idol.....anyway Sir how to charge the dischaged capacitor?
@stevekennon17867 жыл бұрын
Great video. Very detailed and easy to understand. I've made a discharge tool and bought the capacitor I need. Now I'm trying to figure out how to charge the Capacitor up to about 120 volts to use my discharge tool. How do I charge the Cap up for testing purposes ?
@jeanlawson9133 Жыл бұрын
AIN'T IT JUST AIN'T IT 😜 lols
@artbyrobot17 жыл бұрын
You can just use a lamp to discharge any capacitor under say 150v. Connect the plug of the lamp to the capacitor leads with wire and turn the lamp on. The lightbulb will provide the needed resistance.
@richardlloydusa7 жыл бұрын
I have never done this with a lamp so I can't really recommend it. I know what the resistance value is for my resistor but I can't guarantee the resistance of a random lamp. Thanks
@artbyrobot17 жыл бұрын
a 60 watt lightbulb on a 120v power source means it runs with .5 amps based on ohms law. This means its resistance is 240 ohms. So it is a 240 ohm resistor rated for 60 watts. The lamp is not relevant here it is the bulb that is relevant. The prongs of the lamp are just the attachment interface making the discharge easier.
@richardlloydusa7 жыл бұрын
Cool. Thanks.
@jamesrockford51456 жыл бұрын
would it be even better to use a bigger resister. Also liked the background music.
@richardlloydusa6 жыл бұрын
It depends on your application but yes you could use a larger resistor. Thanks and all the best.
@PiquedFlow6 жыл бұрын
How did you land on 12AWG wire? I'd assume you were interested in a specific resistance value (Ohms) Do you think 10 or 16AWG would work with these resistors/ this application?
@richardlloydusa6 жыл бұрын
It's plenty thick for the application but you can go with heavier if you wish. Thanks.
@kkovler18 жыл бұрын
kudos, excellent video followup based on your other video on discharging caps. The only thing I could think of adding would be a small switch box where you could dial in different discharge resistors based on capacitance and voltage charge.
@richardlloydusa8 жыл бұрын
Thanks. Good idea. You could use a potentiometer en.wikipedia.org/wiki/Potentiometer (variable resistor) to dial any resistance in a range too. Thanks for commenting and the feed back.
@fuadhamamah63225 жыл бұрын
Thanks for this video. clear and Nicely explained. is it possible to use 5W Watt 10K Ohm?
@richardlloydusa5 жыл бұрын
That is what I used in this video. See the link in the video description. Thank you for watching and commenting. I appreciate it greatly. All the best.
@markhelf13803 жыл бұрын
Thx for the 10k info. Will use 50w for 1050v cap bank...
@richardlloydusa3 жыл бұрын
You're most welcome. I'm glad and very happy to know that I could help you. Thank you so much for watching, commenting and the very kind words. I appreciate it greatly. All the best.👍😀
@donaldducko65805 жыл бұрын
Nice video! If you don’t want to pay $7 for the Supco capacitor discharge pen this is a great alternative.
@shagarcool8 жыл бұрын
Thanks for this video. Is there any problem if I discharge a capacitor by doing short circuit?
@richardlloydusa8 жыл бұрын
There is a possibility that you will cause damage to the capacitor. Thanks.
@electriciandallastx91828 жыл бұрын
Thanks for the thoughts you have provided here.
@richardlloydusa8 жыл бұрын
You are most welcome. Thanks for watching and the kind comment.
@keithatkins93946 жыл бұрын
Thanks for the info on this D.i.Y. discharge tool. Microwave caps are rated to some 2100v. Will your resister of 5w 10kw still be adequate.
@danielwarren1295 жыл бұрын
Microwave caps are up to 5000v
@glidersoar5 жыл бұрын
Daniel Warren , ok so is that a yes or no?
@petertrinh55765 жыл бұрын
How would you use this on a microwave capacitor which has two terminals
@HGR6936 жыл бұрын
Great video!!! Thank you for the design too.
@richardlloydusa6 жыл бұрын
You are most welcome. Thank you for watching, commenting and the kind words. All the best.
@girohead7 жыл бұрын
So I ordered the resistor, got alligator clips, soldered, and made a very, very nice probe, just to find out that the microwave cap has a built in resistor! I guess it';s good to have for working on computers or other.
@richardlloydusa7 жыл бұрын
Thanks.
@rodsofgod68637 жыл бұрын
girohead So if the microwave cap has a built in resistor, you don't need this contraption or do you?
@richardlloydusa7 жыл бұрын
That depends on whether the resistor is working or not. Also you don't know how long the resistor is designed to take to discharge the capacitor. Be safe. Thanks.
@basementgamer8 жыл бұрын
I have a bad capacitor will it discharge on its own? And could I use a higher volt capacitor in place of the lower one?
@richardlloydusa8 жыл бұрын
It may or it may not. It's best to treat it as a charged capacitor regardless. I recommend using the manufacturer specified capacitor. Thanks.
@silasfatchett56937 жыл бұрын
A gun is always loaded, and a capacitor is always fully charged until you have checked for yourself that it isn't. You can always use a higher voltage rated capacitor, if it will physically fit. It should have the same capacitance rating. Some older circuits will specify capacitors of non-preferred values, in which case use the nearest preferred value, e.g. 22uF to replace a 25uF.
@danseman14 жыл бұрын
Awesome. Great demo of the discharge. Thanks again.
@luisfercr24477 жыл бұрын
Nicely explained. Good tool! Thanks!
@richardlloydusa7 жыл бұрын
You are most welcome. Thanks for watching and the kind words. All the best.
@Tj10568 жыл бұрын
hey just wondering is it safe to replace the fuse without discharging the capacitor in a microwave?
@richardlloydusa8 жыл бұрын
I would say no. Discharge it first and be safe. When you put the new fuse in it will close the circuit and you don't want to do that with a charge in the capacitor. Thanks and be safe.
@Tj10568 жыл бұрын
Richard Lloyd will it discharge on its own over time?
@richardlloydusa8 жыл бұрын
Again I would not count on it discharging on it's own. Be safe and discharge it properly. Thanks.
@indredcold31912 жыл бұрын
Anyone ever tell you that you sound a little like Norm Macdonald? Lol great job nice to know
@richardlloydusa2 жыл бұрын
Yes, I have heard that he sounds like ME. Thank you so much for commenting. I appreciate it greatly. All the best.👍😀
@stargate99846 жыл бұрын
Will the resistor wear out in time? Thanks
@richardlloydusa6 жыл бұрын
I can't see why it would other than being physically damaged it should last a lifetime. Thanks.
@danielwarren1295 жыл бұрын
@@richardlloydusa Where does the electricity go to when the tool is draining it?? Where's it draining to?
@mattfisher4015 жыл бұрын
@@danielwarren129 It's moving from the negative to the positive. Imagine electricity in a capacitor or a battery as negatively electrons being separated from their paired positive charged counterpart. When you complete the circuit, it lets them flow to bind with the positive charge which neutralizes them.
@BrianCzapiga5 жыл бұрын
@@danielwarren129 The energy becomes heat within the resistor and dissipates into the environment.
@borax7478 жыл бұрын
explained very well, thank you
@richardlloydusa8 жыл бұрын
You are welcome. Thanks for watching and the kind comment.
@home2businessza3443 жыл бұрын
Ola' - why not use ohms section of the multimeter to discharge a capacitor,? ;:-_4;:
@richardlloydusa3 жыл бұрын
You could try it but make sure that your meter can handle 440V + on the ohms check. I would not recommend it though. Thank you so much for commenting. I appreciate it greatly. All the best.👍😀
@bobbyy87114 жыл бұрын
thank you
@cobar5342 Жыл бұрын
1/4 inch is closer to 6mm
@richardlloydusa Жыл бұрын
Thank you so much for watching, commenting and the valuable feedback. I appreciate it greatly. Subscribe, Click The Bell and stay tuned! All the best.👍😀
@azdesertnews75635 жыл бұрын
Well done thank you
@agpiccolo7 жыл бұрын
Wow this is great!
@richardlloydusa7 жыл бұрын
Thank you very much.
@Germinalx4 жыл бұрын
Actually actually actual actually
@stevenduke52476 жыл бұрын
Thanks
@richardlloydusa6 жыл бұрын
You are most welcome. Thank you for watching, commenting and the kind words. I appreciate it greatly. All the best.
@davidgaleski53036 жыл бұрын
THANK YOU FOR SCHOOL
@meowmonster4 жыл бұрын
I just use a knife although it ends up scaring me
@Good-Enuff-Garage2 жыл бұрын
would a resistor and a pair of needle nose pliers constitute a poor man's version of said Capacitor Discharge Tool [ahem] Lite? ha ha
@richardlloydusa2 жыл бұрын
My comment would be, "Be safe." Thank you so much for commenting and the very kind words. I appreciate it greatly. All the best.👍😀