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Benchtop current sense amplifier? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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Anyone have a recommendation for a benchtop current sense amplifier?

Sure, there are current sense breakout boards and whatnot. But what I'd like is a convenient device that I can use to instrument a circuit and then monitor its current with my oscilloscope or logic analyzer (Saleae with analog input) along with other signals in the circuit.

Ideal features might be:

Banana jack inputs and outputs
Selectable range / sensitivity / sense resistor
Isolated measurement, so I can measure high-side or low-side currents without worrying too much about the common connection on my scope
Selectable or automatic power source selection, between circuit-powered and externally-powered

I haven't seen anything like this in a few targeted searches, and just wondering if someone has any suggestions I might have missed.

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[–] [email protected] 1 points 1 year ago

I swear I remember seeing the uCurrent before and TBH that's probably what unconsciously inspired most of my wishlist. Thanks for the reminder. Seems to be unavailable (out of stock) currently...and I kind of wish it had a greater range. I'm semi-inclined to make my own.

For my immediate purposes I just ordered a few INA169 breakouts which will work well enough.