Simplest PWM Motor Control Circuit Using Op Amp

Intro: Simplest PWM Motor Control Circuit Using Op Amp

Hello People!

This instructable is about how to build the simplest(probably) PWM circuit to control DC Motor speed, LED Strip Brightness, etc.

Specs:

Input Voltage : 5-30v

Current Handling : Depends on the MOSFET(Around 10A for IRFZ44)

Please comment if you tried building it!

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    6 Discussions

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    megapix

    2 years ago

    Clever circuit. I also like the use of the bottle cap as a control knob.

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    BeachsideHank

    2 years ago

    What advantages does this circuit posses over the more popular 555 PWM designs?

    2 replies
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    Stuff BuilderBeachsideHank

    Reply 2 years ago

    Here are two

    One advantage might be higher operating voltage and other might be that two individual controllers can be designed using a single IC