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simple PWM


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i found this simple PWM for motor control.
it is something usefull, and i was thinking to build it and wanted to know what others think.
maybe some of you know a similar circuit, i mean, simple, but maybe more performant?
here is the circuit:
http://www.geocities.com/tjacodesign/motor/motor.html

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It doesn't get much simpler. The chip can be a 40106 with minor changes. There is something that uses all discretes at

http://www.romanblack.com/

One downside to these designs is that the frequency is not controlled, and as such may have some annoying side effects. For a motor control this is not likely to be a problem. Another point lacking is that interfacing these to some automatic control will be difficult.

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  • 3 weeks later...

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