Thanks, that's an excellent approach, which will make things much simpler.

On Wed, Jan 23, 2013 at 1:41 AM, Harold Hallikainen
<harold@hallikainen.org> wrote:
> These are my favorite 60Hz current sensing transformers:
>
> http://www.toroid.com/standard_transformers/current_sensing_transformers/=
current_sensing.htm
>
> One trick is to run the secondary of the transformer through a diode
> bridge, then the shunt resistor. Putting the diodes before the resistor
> gets rid of diode drops since the transformer secondary is a current
> source (until the voltage is high enough to saturate the core).
>
> Harold
>
>
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