EE question: convert RS232 voltages to RC servo

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EE question: convert RS232 voltages to RC servo

19-06-2012, 15:15

Ether

systems engineer (retired)

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Join Date: Nov 2009

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Re: EE question: convert RS232 voltages to RC servo

Quote:

Originally Posted by EricVanWyk

I suggest a fully series circuit: +/-12V -> diode -> resistor -> PWM input -> return. ... The H11L1M ... can only handle up to 6V in reverse.

Doesn't there need to be a charge-drain resistor R2 to prevent reverse voltage across the H11L1M diode when the signal is -12 volts?

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Last edited by Ether : 19-06-2012 at 16:18. Reason: added hand sketch

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