555contest: Class D servo control circuit

This here is a circuit with 2 PWM oscillators. One PWM is controlled via the internal potentiometer of a broken Servo, the other can be manualy adjusted. Both PWM signals are buffered over 1.2µF caps and those 2 respective voltages are connected to the servo motor. The mean voltage on each terminal should be around Duty Cycle times Vcc and the voltage difference drives the motor.
It kinda works, but nor as good as I hoped. I am still presenting this, because a more able tinkerer might get a good idea out of it.

You can find more info here:
http://madgyver.de/index.php?aid=156

Category:

Science & Technology

Tags:

• Servo
• NE555
• 555
• contest
• controller
• Class
• electronics