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Unread 16-02-2006, 23:43
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Al Skierkiewicz Al Skierkiewicz is offline
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Re: NPN Sensor Question

Mr. Steve,
The digital inputs to the RC have an internal "pullup" resistor to the internal power supply (+5 volts). The input is designed to have an input that closes to ground/common or is open circuit as the two states. The RC handles the rest.
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