Try the ZXCT1009. It's a current mirror on a single 3 pin package intended
for high side current sensing.
https://www.diodes.com/assets/Datasheets/ZXCT1009.pdf

The output voltage can go straight into the ADC input of a microcontroller.


Tom Harris <celephi...@gmail.com>


On Tue, 21 May 2019 at 10:08, gregebert <gregeb...@hotmail.com> wrote:

> Thanks for posting this!  I had no idea there were diff-amps available
> that could handle such a high input voltage. A single instance is all you
> really need even if there are multiple tubes, because it's possible to
> measure each tube individually by blanking all others.
>
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