Introduction: 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!

Comments

author
megapix (author)2016-09-14

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

author
BeachsideHank (author)2016-09-04

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

author

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

author

Both are excellent reasons, thanks for the reply!

author
DIY Hacks and How Tos (author)2016-09-04

Nice basic control circuit design.

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