Quote:
Originally posted by CHSguard72
I have a 339 Quad Comparator here also, will this work? from the schematics on the package, it looks like the same type of OP AMP.
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Sorry....this is a comparitor, which while similar, is not the same.
Besides, I'm not sure the common mode input voltage range of that device includes the voltage rail.
The 339 and 324 are older devices, and though they are single supply devices, I think they sense down at GND better than Vcc. (At least that is the case for the 324)
Sorry,
-Quentin