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5V pins in PIO interface


ralphb

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I see, then I better keep these. Thanks.

 

 

A very important difference is the impedance of the power sources.

Pin 12 with a 10 ohm source, can provide some current for practical uses. If you need 50mA however the voltage will drop to 4.5V

Pin 15 with a 1K ohm source is only useful as a voltage source. Draw 0.05 mA (50uA) and the voltage will drop to 4.5V

Edited by TheBF
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