Motor Speed Controller

Posted on Nov 26, 2012

The circuit described here is for a general purpose device that can control DC devices which draw up to a few amps of current. The circuit may be used in either 12 or 24 Volt systems with only a few minor wiring changes. This device has been used to control the brightness of an automotive tail lamp and as a motor speed control for small DC fans of the type used in computer power supplies.

Motor Speed Controller
Click here to download the full size of the above Circuit.

A PWM circuit works by making a square wave with a variable on-to-off ratio, the average on time may be varied from 0 to 100 percent. In this manner, a variable amount of power is transferred to the load. The main advantage of a PWM circuit over a resisti

Leave Comment

characters left:

New Circuits



Popular Circuits

Car rear Stop Light Flasher
ultrasonic receiver circuit
led array schematic
12V DC Light Dimmer Circuit Using 555 Timer IC
Inverse Heat Conduction
The FSK modulation circuit composed of 74LS74
BA313 ALC circuit diagram of a sound recording
OTL transistor radio in a power amplifier circuit