RobertD
New Member
Hi folks, I need to lower a voltage from 8.5v to 5v for the A/D pin. I was told to do a bridge with two resistors, like a trimpot. But that would mean there is always a drain on the input. Is that correct? In order to have zero current drawn while not using the A/D I was thinking to put a single resistor between the 8.5v and the pin to reduce the voltage to 5v. Would that work? That way, when the pin in not in use, there would be zero current drawn, which is what I want, and not a bridge where there would always be a leakage to ground through the resistors.
Something like this:
**broken link removed**
Something like this:
**broken link removed**