how to amplify current with a 741?

Thread Starter

toffee_pie

Joined Oct 31, 2009
235
Guys,

I am trying to amplify current from a 328 atmega and boost it up with a 741, to no avail.

I have connected resistors to give a Rf/R1 gain of 100, but it doesnt seem to do anything?

I am getting current ranges from 3mA-30mA from my 328 but this is too small to detail on a scope :(

thanks.
 

beenthere

Joined Apr 20, 2004
15,819
A 741 op amp is not a power device. It is a voltage amplifier, not one for current. It is also not good for single supply usage.

What is the application?
 
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