FC's Pulse Width Modulator Circuits

• PWM DC Motor Speed Control using a 556 dual timer IC
• PWM Motor Speed Controller / DC Light Dimmer using a LM324 IC
• PWM Motor/Light Controller variations on the LM324 PWM Circuit

Power your PWM circuits with solar power by using a CirKits solar kit.

SCC3 Solar Charge Controller	SPC3 Solar Power Center	DAS1 Dark Activated Switch

A reader sent in this interesting circuit for a PWM circuit done with four transistors. I have not built it, but it looks like it should work. It might be a good idea to put a resistor between the control pot's wiper and +Vcc to limit the transistor base current.

See this 4QD article on PWM motor control circuits.

Back to FC's Electronics Circuits page.

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