PWM using OP-amp | how to make pwm using op-amp

[@electronicdude921]

This is the simplest approach and pretty good, but it gives variable frequency pwm. On increasing duty cycle, frequency decreases and on decreasing duty cycle, frequency increases. And this variation is quite huge making it unsuitable for switching power supplies since you can't decide appropriate coil size. A better approach is to use a lm324 quad op amp. Generate triangular wave from 2 of its op amps and use third one as a Schmitt trigger and you'll get fix frequency pwm. Edit: and when using it as buck converter or boost converter, fourth one can be used as a feedback error amplifier thus allowing you to make a complete regulated converter from a Single IC

[@posadasmirandaalexis4339]

sos un crack, jefe, maquina, fiera, tigre, pantera,gladiador, capitan 🧐

[@sanjanasarate2196]

can you share the circuit diagram???

[@Infinity-electronic]

USE FULL👍👍👍

[@pagialpesh703]

👌👌Very good sir 👍👍

[@janardhankanisetti2167]

nice brother but how r u giving two different signals as input

[@eduardoolivares5304]

the best circuit, the simplest pwm

[@maurizolibero9189]

Very nice 👍👍

[@meax7180]

Good but you're missing a flyback diode in parralel reverse with motor because motor is inductive load, and when it's powered on it stores energy in form of magnetic fields, and when is disconnected voltage polarity flips and can create huge voltage spike on the drain contact of the mosfet and it can kill mosfet. I know that from expirience, believe me.

[@mack3233]

nice! helps in my assignment a lot

[@arielrizu]

Work for 32v 10A ?

[@Irfandi_Anwar_Tutorial]

Good job

[@RJImagination]

Thanks

[@Irfandi_Anwar_Tutorial]

I m youtuber from indonesian

[@RJImagination]

Ohh!! Good to know you👍

[@yajuvendrasinghrajpurohit7888]

can you please projects schematic using fritzing .it helps viewers a lot .as we get confused when we see video and make please make schematic using fritizing .from one of your fans.

[@RJImagination]

Okay brother

[@madhusudhan1731]

can we use instead of lm358 lm 393

[@techzila5379]

Which power amplifier is used for amplifying the sensor output followed by PID controller?

[@praveenstech3408]

Ravi jha plz show your face on youtube and speech w r waiting😍😍😍

[@RJImagination]

Very soon brother

[@mohamedbadusha4970]

Can I use irf840

[@RJImagination]

Yes

[@randallshutt2907]

I used an IRLB8721 even

[@ayshabipt4741]

Usefull video

[@pubgmaster2171]

can this made by using N555 ic or Not? plz replay Rj

[@RJImagination]

Yes

[@RJImagination]

But but with few changes

[@pubgmaster2171]

@@RJImagination :Sir last question, is there will be any working difference between these both circuits n555 and lm358 ic ?

[@rafi6424]

Not really pwm but it will work fine for simple things like lights or heaters.

[@jonatanvillagran3253]

Can you make a circuit that turns a fan on when the heatsink goes over 50 or 70°c? I heard PC motherboards have heat sensors maybe we can use that

[@RJImagination]

Okay

[@RenatoRamosFernandes]

Cadê o diagrama ?

[@yajuvendrasinghrajpurohit7888]

I made your it project but it didn't work do you make fake videos because I am seeing your channel from about 1 year please reply .

[@RJImagination]

No! What happened??

[@yajuvendrasinghrajpurohit7888]

@@RJImagination I made that ir led project without any ic which you gave some time ago but it didn't work .can you please projects schematic using fritzing .it helps viewers a lot .as we get confused when we see video and make please make schematic using fritizing .

[@RJImagination]

For any help please connect to me on Facebook and tell me the full name of video

[@emranaahil1754]

Highest capacity of input and output source

[@RJImagination]

5-30v

[@dhavalpatel4946]

Hello brother 775 motor using this circuit

[@karangaikwad9914]

Sir plz make video on Build circuit to turn on buzzer after 10 seconds Plz help me 🥺 As soon as possible Because it is my project to show me my sir And I am searching more videos but your videos are very simple so Plz help me sir 🥺🥺🥺🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@Rick8547]

Bro circuit diagram link

[@ErkanOkman]

👍👏

[@utkuyesil7271]

first

[@MovieTubeMartin]

No entiendo porque no hablas?? O explicas??

[@hassangentleman1236]

There is an error in your schema. I made your it project but it didn't work do you make fake videos.

[@dharmeshthakur5594]

Pdf file

[@RJImagination]

Diagram available in video

[@القرآنالكريم-ع8ك8و]

I think its fake video

[@RJImagination]

No!

[@randallshutt2907]

You would be wrong. While this is not a perfect sawtooth-looking PWM signal, its quite effective.

[@nagumalliyaswanth8054]

Fake

[@Infinity-electronic]

You stupid😒