resistors Current flows from the source towards the sink


Posted on Feb 6, 2014

It`s supposed to reduce the max. voltage between the GPIO input pin and the current source to 3. 3V, since 5V * (10K/(10K+5K) = 3. 3V. The thing is - 3. 3V is the voltage over the 10K resistor and 1. 7V is the voltage over the 5K one. As long as the current flows from the source to the sink, the voltage between the source and the GPIO pin should be 1.7V - what am I missing


resistors Current flows from the source towards the sink
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