I found a couple of related posts about this, but nothing that showed exactly what I am looking for, so...
I need a simple (defiinately, because I'm a hobbiest/newbie) circuit that triggers a logic switch if a sensed input voltage falls below a varying reference voltage. It would work like this:
r = reference voltage
s = sensed voltage
v = +5 (logic high)
o1 = output 1
o2 = output 2
if s < r then v is connected to o1
if s >= r then v is connected to o2
Both r & v can vary from 0 to +80 VDC. Note that the circuit will not be passing any real current, just sensing the potential present on r and s and making either o1 or o2 high.
Thanks (again)! You folks have been great and a real help.
Bruce
I need a simple (defiinately, because I'm a hobbiest/newbie) circuit that triggers a logic switch if a sensed input voltage falls below a varying reference voltage. It would work like this:
r = reference voltage
s = sensed voltage
v = +5 (logic high)
o1 = output 1
o2 = output 2
if s < r then v is connected to o1
if s >= r then v is connected to o2
Both r & v can vary from 0 to +80 VDC. Note that the circuit will not be passing any real current, just sensing the potential present on r and s and making either o1 or o2 high.
Thanks (again)! You folks have been great and a real help.
Bruce