Hey all,
I've being trying to work out the amplification of the attached instrumentation amplifier for quite some time now but I'm still as stumped as ever.
From what I can tell, it's meant to have a gain of roughly 3000, and the differential amp has a gain of 22 that means there must be a difference of about 137 between the voltage across the variable resistor and the voltage across the 2 10k resistors and the variable resistor in series. But I have no idea how to derive this figure.... I'd be very grateful to anyone who could show me how its done.
Thanks in advance.
Teg
I've being trying to work out the amplification of the attached instrumentation amplifier for quite some time now but I'm still as stumped as ever.
From what I can tell, it's meant to have a gain of roughly 3000, and the differential amp has a gain of 22 that means there must be a difference of about 137 between the voltage across the variable resistor and the voltage across the 2 10k resistors and the variable resistor in series. But I have no idea how to derive this figure.... I'd be very grateful to anyone who could show me how its done.
Thanks in advance.
Teg