Voltage Divider

[anti-idiot]

i'm doing a bizarre version of D+ and uA and i wonder if is really neccesary to put the voltage divider in each one or if i can use just once, since i wont use it w/9v battery, but an Ac-Adaptor.

[jrem]

if the voltage reference is the same and your current lives up to the challenge then I don't see why not.

[anti-idiot]

can i get rid of the diode in the uAmp? what's the difference b'tween using 100k or 1M in the voltage divider?

[jrem]

looks like the diode is just there to prevent the smoke from excaping the opamp in the event of a miswired power adapter, so yes, I would think you can lose the diode.

[anti-idiot]

a lot of thanks!