Quote:
Originally Posted by imax48236
If your servo needs a +9 volt input, you may want to use a voltage regulator circuit which will lower the voltage from 12v to 9v. These are readily availible at RadioShack or your favorite overpriced electronics provider.
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You can't put custom circuits in between the RC and any motors including servos. The servo must be directly connected to the PWM output on the RC. It already provides the correct voltage (7.2v) which comes from the backup battery.