FAQ
Can I wire a single J-type ungrounded TC to a pair of AD594 units - in parallel? I would like to connect to unit 1 normally, but to the 2nd unit wired in reverse. My purpose is to have a reverse polarity detector, where unit 2 would drive an LED whenever…
I would like to use the basic connection/single supply operation of the AD594 with a thermocouple type J, so I connected it like shown in figure 1 of the datasheet.
Instead of a clear signal of 250 mV I got signal noise around 320 mV at temperature 25…