This is quickly becoming one of my favourite electronics channels. I’m just learning electronics in my retirement and I need people who explain the very basics with no assumptions of knowledge.
Sir, iam a basically a mechanical engineer, after watching your videos, now become electronic engineer, thanks for your videos, I need wiring diagram for fanuc power supply module
Wery simple and very useful. I was discharging capacitors with screwdriver and hate the pop and welding on tip of screwdriver etc. Thank You! Good and easy to understand video!
Im a newbie in this field but watching all your videos im becoming pro 😊😊😊 in less than a time thank you sir for all your demonstration n information you deliver
I was just looking for designs for this device and there you are in my subscriptions; perfect timing! Your design is unique in that it allows the voltage to be conveniently observed with a multimeter. You have me thinking on clever designs for my build. I have an extra volt meter that is not so valuable. I think that I will make it a dedicated capacitor discharger, by placing the resistor across the probe pins, on the PCB. That will make for a neat, professional package. I am excited! Thank you for the inspiration!
@@HaseebElectronics I have already completed the project. It was very simple to do. I posted it on the EEVBlog forum. I titled the thread "Repurposed Old Multimeter = DIY Capacitor Discharger With Readout - Project." You can search for it by this title. I would have posted the link, but TH-cam does not allow users to post links. I hope you will look at the thread. Feel free to copy the link and post it here.
Waow thanks for the knowledge. You always have a video for any problem I face. Am a beginner and I always face so many challenges and doubts since I no one to learn this from aside youtube.Keep up the good work.
Thank you, you explain this very well. I got a small shock from a small capacitor in a camera once. I am going to replace some relays in a hi-fi amplifier soon that has large capacitors. I am definitely going to take your advice and check the voltage and discharge the largest capacitors before working on the board 👍
I have a question. I have a 10 ohm 100 watt resistor that I use for discharging capacitors. This discharges the capacitor very quickly with no sparks but will I cause damage to the capacitor by using such low resistance?
Salam M Hasseb, nice video ! I did a mistake while desoldering a bulk capacitor in an atx psu and i don't have any output anymore, can you show how to play with opto coupler to force the startup. Thank you.
Just wanna add something. If you use Fluke Meter, Testing Charged Capacitors directly using capacitance test, the tester will display diSC indicating the multimeter is discharging the capacitor before it measures the capacitance. Fluke 87V has this feature and been using every time I encounter a capacitor that might be charged.
really a valuable hidden feature. i was unaware by this information. i always do this practice by discharging the capacitor , then checking the voltage and then check capacitance i am thankful
Took out MBO from Grunding TV after i tested TV with no picture output and no turning on at all but got few times glimpses of picture and it was black screen again after that . There was one big capacitor (450 V , 68 μF ) on it and was laying down and was some black "gummy" substance under it . I suspected it was probably leak of electrolyte from capacitor and while holding MBO i touched 1 pin where power cord was connected and got pinch of electricity XD through thumb all way to the shoulder . Video is awesome friend and i have question . Can i damage digital instrument for measuring capacity if it is larger ( for example 68 μF ) then on instrument , which is 20 μF highest value for measurement on instrument ?
in diode mode NEVER do it. because in diode mode you are using internal battery of the multimter. it can explode the battery or it will damage the DVM. tingston lamp is also some useful idea, but a large value capacitor (charged at 400 VDC can bast the tingston lamp. as the lamps are just 220 VAC RMS. so surely the bulb will not work much longer. but as you told that your professor advised like this, please confirm again
Yes, it's bleed resistor, but also equilizing resistor, during normal PSU operation. Over time, voltages across 2 capacitors can differ by few volts, due to inperfection and initial difference in capacitance, and many other factors. These 2 caps don't age exactly the same way. I've used MATLAB to optimize between time to charge and discharge power. I've found it's fine for 6kohm resistors for continous discharge of 15 seconds, or less.
@@2012isRonPaul it has to be precize value, so it won't dissipate any significant heat under normal operation. P=USquared/R< Pmaximum allowed dissipation.
Danke, Herr Haseeb Schönes und lustiges Video Aber bisher gibt es keine Antwort auf meine Frage in einem früheren Video Woher wissen wir den Wert einer beschädigten Zenerdiode ohne Zahl? Vielen Dank
Willkommen und besonderer Dank, ich muss auf alle Fragen eingehen. ich habe es notiert. weil ich mehr als 1000 Anfragen zum Erstellen von Videos habe und viel beschäftigte Zeit in meinem Büro habe, so dass ich zu spät antworten kann es tut mir leid für die späte, aber ich werde es auf jeden Fall tun Bitte akzeptiere meine besten Grüße
special thanks sir that is also a very useful solution, it provides 400-500 mAmp discharge rate. but when dealing with high voltage above 300 this lamp provides surge in discharge and during discharging high capacitance valued capacitors, the tingston lamp burns out. because high voltage and current causes to exceed its power rating, (while discharging above 1 farad capacitor it is unsafe) so it is much safe to discharge at slow discharging current
I'm here because I just got grounded by the power supply of my ps4 that has been out of the power outlet for more than 4hrs. already 🤣 I didn't know that it holds a charge hahahah
take special care for yourself 💞 because electrons are the smallest part in our life but these are the biggest enemies in our lives. the electrons bring brightness and colors in darkness of our lives but the electrons can also bring darkness and steal colors of our lives wishing you safest, happiest and healthiest life
you are right there are many ways as" using tingston lamp soldering iron high wattage resistance but a fast discharging to a capacitor or a battery cause to reduce its working life we have to consider this point
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This is quickly becoming one of my favourite electronics channels. I’m just learning electronics in my retirement and I need people who explain the very basics with no assumptions of knowledge.
it is my pleasure
Sir, iam a basically a mechanical engineer, after watching your videos, now become electronic engineer, thanks for your videos, I need wiring diagram for fanuc power supply module
Wery simple and very useful. I was discharging capacitors with screwdriver and hate the pop and welding on tip of screwdriver etc. Thank You! Good and easy to understand video!
This IS GREAT. Very simple, strait forward, but well explained.
thanks a lot
That was so amazing and simple and straight to the point. Great stuff sir
most welcome
This channel deserves way more subscribers.
Im a newbie in this field but watching all your videos im becoming pro 😊😊😊 in less than a time thank you sir for all your demonstration n information you deliver
I was just looking for designs for this device and there you are in my subscriptions; perfect timing! Your design is unique in that it allows the voltage to be conveniently observed with a multimeter. You have me thinking on clever designs for my build. I have an extra volt meter that is not so valuable. I think that I will make it a dedicated capacitor discharger, by placing the resistor across the probe pins, on the PCB. That will make for a neat, professional package. I am excited! Thank you for the inspiration!
wow that is awesome
please accept my best regards
yes this idea is useful to monitor the voltage during discharging the capacitor
@@HaseebElectronics I have already completed the project. It was very simple to do. I posted it on the EEVBlog forum. I titled the thread "Repurposed Old Multimeter = DIY Capacitor Discharger With Readout - Project." You can search for it by this title. I would have posted the link, but TH-cam does not allow users to post links. I hope you will look at the thread. Feel free to copy the link and post it here.
Waow thanks for the knowledge. You always have a video for any problem I face. Am a beginner and I always face so many challenges and doubts since I no one to learn this from aside youtube.Keep up the good work.
Great information ways you are such an excellent teacher 👍🇬🇧🇬🇧
Thank you, you explain this very well. I got a small shock from a small capacitor in a camera once. I am going to replace some relays in a hi-fi amplifier soon that has large capacitors. I am definitely going to take your advice and check the voltage and discharge the largest capacitors before working on the board 👍
Very good idea and very very cheap to make it to all technical people
thanks a lot dear
yes
we must take care for safety
Thank you for this brother.
it is my pleasure
Great tuition Sir
best regards and special thanks
Great video, I'm going to build this.
Brilliant Jo my friend, can you use the resister on any size capacitor or have you got to go up in size . Thanks
Tony
Thanks 😊 master Thank you so much this video very very useful for myself Thank you so much Brother 💓 😊 😀 ☺️ 🙏 💜
Most welcome 😊
Amazingly useful video
Big Like from London 🇬🇧👍
Big thanks Bhai
Very useful information. Thanks
You are welcome
i love your job..i learned a lot of things from you.. thank you for everything🙏🙏🙏🙏
You are so welcome
Beautiful 👍
Very nice video 👍👍
Wsalam 👍 my intelligent and very talented bro excellent 👌 job
Have a great weekend Haseeb!
best regards and lovely thanks
I have a question. I have a 10 ohm 100 watt resistor that I use for discharging capacitors. This discharges the capacitor very quickly with no sparks but
will I cause damage to the capacitor by using such low resistance?
Assalamualaikum
Thank you so much for sharing very useful and informative video with us
Wow super Master 👌 Thank you so much 💓 🙏
Thanks ❤Master this 🙌 videos very very useful for myself Thank you so much Brother 💓 🙏 😊 😀
You're most welcome
Excellent explanation. Thank you.
Thanks for sharing very interesting
Excellent
Thank you so much 😀
Thank you Sir, very helpful video
it is my pleasure
Good information about discharge of capster
best regards
Salam M Hasseb, nice video !
I did a mistake while desoldering a bulk capacitor in an atx psu and i don't have any output anymore, can you show how to play with opto coupler to force the startup. Thank you.
very nice video. thank you very very much
You're most welcome!
Great video. Thank you!
Good clear video. Thanks
You're welcome!
Just wanna add something. If you use Fluke Meter, Testing Charged Capacitors directly using capacitance test, the tester will display diSC indicating the multimeter is discharging the capacitor before it measures the capacitance. Fluke 87V has this feature and been using every time I encounter a capacitor that might be charged.
really a valuable hidden feature. i was unaware by this information. i always do this practice by discharging the capacitor , then checking the voltage and then check capacitance
i am thankful
Thank you.
You're welcome!
Thank you sir
Thank you so much. Now I understand
You are welcome!
MASHA ALLAH awesome vlog, super technical and informative, thanks for sharing, stay safe and blessed
Best tutorial fresent bossku
Many many thanks
Great and informative, thank you :)
Took out MBO from Grunding TV after i tested TV with no picture output and no turning on at all but got few times glimpses of picture and it was black screen again after that . There was one big capacitor (450 V , 68 μF ) on it and was laying down and was some black "gummy" substance under it . I suspected it was probably leak of electrolyte from capacitor and while holding MBO i touched 1 pin where power cord was connected and got pinch of electricity XD through thumb all way to the shoulder . Video is awesome friend and i have question . Can i damage digital instrument for measuring capacity if it is larger ( for example 68 μF ) then on instrument , which is 20 μF highest value for measurement on instrument ?
Thank you! Love your stuff!!!
it is my pleasure
sir make a video on gate drive transformer
Alhamdulillah .. usefull info .. tqvm
Good job
very nice 👍
Beautiful explain.
dear haseeb sir once my professor told you can discharge capacitor in diode mode is it safe? the easiest way is bulb they say. please guide me .
in diode mode NEVER do it. because in diode mode you are using internal battery of the multimter. it can explode the battery or it will damage the DVM.
tingston lamp is also some useful idea, but a large value capacitor (charged at 400 VDC can bast the tingston lamp. as the lamps are just 220 VAC RMS. so surely the bulb will not work much longer.
but as you told that your professor advised like this, please confirm again
@@HaseebElectronics you are very right haseeb sir, your practical experience knowledge shoud exceed anyone around that i know. thank you once again
Very useful information thanks
Thank you! That was very helpful
بهوت اتشها انفرميشن great رائع
thanks a lot dear brother
Good details
Good Video My Friend!
best regards and special thanks
Yes, it's bleed resistor, but also equilizing resistor, during normal PSU operation. Over time, voltages across 2 capacitors can differ by few volts, due to inperfection and initial difference in capacitance, and many other factors. These 2 caps don't age exactly the same way. I've used MATLAB to optimize between time to charge and discharge power. I've found it's fine for 6kohm resistors for continous discharge of 15 seconds, or less.
exactly perfect
thanks for your valuable comment
can i just use one 100k 2w resistor too or why does it have to be 1w ?
@@2012isRonPaul it has to be precize value, so it won't dissipate any significant heat under normal operation. P=USquared/R< Pmaximum allowed dissipation.
@@SanelKeys what is all that supposed to mean lol
@@2012isRonPaul it means, with all due respect, you need to back to basics (Ohm's law, Kirchof's rules etc...).
Nice explanation
Dear.. could help someone like me who are newbie .which tools is essential that we must purchase for start repairing or initial utility must have
sure i will try to share soon.
Lk 42 good job brother 👍
Danke, Herr Haseeb
Schönes und lustiges Video
Aber bisher gibt es keine Antwort auf meine Frage in einem früheren Video
Woher wissen wir den Wert einer beschädigten Zenerdiode ohne Zahl?
Vielen Dank
Willkommen und besonderer Dank, ich muss auf alle Fragen eingehen. ich habe es notiert. weil ich mehr als 1000 Anfragen zum Erstellen von Videos habe und viel beschäftigte Zeit in meinem Büro habe, so dass ich zu spät antworten kann
es tut mir leid für die späte, aber ich werde es auf jeden Fall tun
Bitte akzeptiere meine besten Grüße
Vielen Dank
thanks master
You are welcome
clear explanation
Nice, I was looking for something like this😊👌🏻I will make this resistor with crocodile just clipable on multimeter probes😊Thanks
wow that is a great idea
Thanks, great idea.
Amazing with full wt
thanks a lot
Great vid 👍
Capacitor voltages divider per video bano or kise pata kar ki capaitor per kitna ampare flow horha hai
Useful info 👌👍
Are you a qualified Electronics Tech .
yes dear
i spent 32 years in practical electronics after my engineering
Great
Nice video brother 👍
Stay happy 💖 🏠🏡
Sir if we I want to discharge even more fast then what will be the value of resistance?
use soldering iron or use 100 watts lamp to discharge more quickly
@@HaseebElectronics sir if we use 47k or 56k 2 watt resistance then it will work?
Can i use a light bulb to discharge na capacitor?
This saves me from getting shocked.
that is awesome that my efforts are useful
I use 100w ac bulb for discharging..😊😊😊😊
We can. Use test lamp, 60 w filament bulb
yes we can use it, but for high capacitance value capacitors it is unsafe,
@@HaseebElectronics really
@@justdoit554 yes dear
Good job
Just try to used 100 watt bulb for capistor discharge
1 holder
1 100 watt bulb
1 feet wire
special thanks sir
that is also a very useful solution, it provides 400-500 mAmp discharge rate. but when dealing with high voltage above 300 this lamp provides surge in discharge and during discharging high capacitance valued capacitors, the tingston lamp burns out. because high voltage and current causes to exceed its power rating, (while discharging above 1 farad capacitor it is unsafe) so it is much safe to discharge at slow discharging current
ive accedently touched my 12v to 320v circuit and get a nice mark on my hand🤣🥴🤯
yes dear, it makes a dangerous shock. and i will discuss pulse transformer circuit
I can’t see where the probes are touching. Please zoom next time.
i connected probes across capacitor pins
I'm here because I just got grounded by the power supply of my ps4 that has been out of the power outlet for more than 4hrs. already 🤣 I didn't know that it holds a charge hahahah
take special care for yourself 💞
because electrons are the smallest part in our life but these are the biggest enemies in our lives.
the electrons bring brightness and colors in darkness of our lives
but the electrons can also bring darkness and steal colors of our lives
wishing you safest, happiest and healthiest life
@@HaseebElectronics thank youuuuuu. I accidentally threw it to my phone last night that's why my phone has a dent now 🙈 the ground was strong actually
@@snow4562 OMG 😱
wa alaykum asalam !!!
stay blessed
Stop shorting capacitors use high wattage and ohm resistors to discharge instead.
you are right
there are many ways as"
using tingston lamp
soldering iron
high wattage resistance
but
a fast discharging to a capacitor or a battery cause to reduce its working life
we have to consider this point
@@HaseebElectronics I value my life over a cylinder containing two isolated plates.
@@AK2I47 exactly the life is a God given gift, we have to take care more than anything
safety
I use a lamp to discharge
Super Master 👌 Thank you so much 💓 🙏 ❤❤❤❤
best regards