How to Make High Power Led Dimmer+Dc Motor Speed Controller

Hello everyone, I will show you how you can make a simple pwm control dc motor speed controller...

Also you can control the brightness of any led light....so this is a two in one circuit ..

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The main equipment in this circuit is ic 555....In this setup we use ic 555 as an astable multivibrator...where it produce square waves.....In this setup we can control the duty cycle by varying the preset....

The output of the ic 555 is fed to a npn power transistor which can handle larger loads....you can use any npn power transistor or any n-channel mosfet....

if you want to control the led brightness just connect it across the transistor & positive power supply but if you want to control the speed of a dc motor then connect a 1n4007 or 1n4148 diode across the motor terminal & then connect it across the transistor & positive supply.....

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