I'm coming back to play with TS-7xx0 stuff after a few years off....
I've got a TS-7200 with the A/D stuff on board. I'm trying to instrument a
fridge (I know it sounds weird but I'm working with a high tech fridge on
batteries and I need to know how much power it consumes in "normal" conditions,
so the idea is to record ambient temp, inside temp, current and voltage over a
long enough period to get some valid data.)
Temp and voltage should be pretty easy, but the current is a bit of a problem.
I need to measure somewhere around 2 to 5A @ 12VDC. I have not found a
suitable shunt or a way to do this. The fridge has a micro-controller that
senses the input voltage and adjusts itself accordingly, so whatever I do
cannot drop the voltage to the fridge in any significant way (say no more than
.05V).
Any suggestions?
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