I just got handed a requirement for a circuit that I've not seen yet,
an op-amp based voltage divider.
Didn't see it in Horowitz and Hill either.
This is not a resistive divider, for example the output of 3V and 1.5V
would be 2V.
Can anyone suggest a source? Seems like something that ought to be in
a NatSemi analog book somewhere.
Wow.. So much argument over terminology.
FWIW I'm no "beginner". I know what I'm after is NOT a resistive
divider, and I didn't want to fend off 1000 replies telling me to use
two resistors.
That's why I included the part illustrating that what I wanted was the
division of voltage A by voltage B, and not the division of voltage A
by some constant.
The end result is a circuit to do monopulse resolution enhancement of
two sensors with overlapping detection fields.
The circuit needs to take two inputs, A and B, and give the result of
(A+B)/abs(A-B)
I had everything worked out at that point except for the analog
divider.
I've found several approaches using log-antilog now, and I'm satisfied
with that at this point.
I didn't know what to call it when I asked, as I'd not seen such a
circuit in quite some time, and looking thru H+H I also came up blank.
It's hard to ask for something precisely when you don't yet know what
the name of it is..
So thanks for the helpful replies, but I think I'll pass on the
"attitude" replies.