[volt-nuts] How to measure micro-amp currents and have low impedance?

[Bruce Griffiths]

Bruce Griffiths wrote:
> Use the Patterson transdiode connection with npn and pnp transistors as
> feedback elements.
> It works much better/more predictably at low currents than when signal
> diodes are used.
>
> Bruce
>
>   
To handle 1A either a power opamp or an opamp with a high current output
buffer will be required.
Transistors with a collector current rating of 1A or more will also be
necessary.

Bruce