bogdan Posted March 7, 2004 Report Share Posted March 7, 2004 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 Quote Link to comment Share on other sites More sharing options...
Ldanielrosa Posted March 7, 2004 Report Share Posted March 7, 2004 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. Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted March 26, 2004 Report Share Posted March 26, 2004 I built a circuit similar to this and found that my relaxation oscillater did not give me good results. I used a NAND with feedback and a capacitor and resistor. The voltage I got was not stable enough to be considered a clock. This might be interesting to anybody trying to configure a clock circuit. Quote Link to comment Share on other sites More sharing options...
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