B
bunny
- Jan 1, 1970
- 0
I am using the below schematic for a OpAmp TLC272CP. According to the
formula of G = (R1/R2) the gain on this circuit should only be a matter
of 11. however as you can see below it's closer to 15/16. I'm
wondering what could cause this anomoly. I have put the circuit
below(sorry for the Ascii) and what i put into the + of the opamp and
what i got as output.
Thanks
base=2.0mv
output=33.4mV
+9V +9V
| (+). |
100k pot<------|\|
| (-)| \_____.__R3____Meter__.
| .-| / | |
| | |/| | |
| | | | |
| .------R2-' |
| | | |
| R1 | |
| | | |
Gnd Gnd Gnd Gnd
R1 = 1k
R2 = 10k
R3 = 10k
formula of G = (R1/R2) the gain on this circuit should only be a matter
of 11. however as you can see below it's closer to 15/16. I'm
wondering what could cause this anomoly. I have put the circuit
below(sorry for the Ascii) and what i put into the + of the opamp and
what i got as output.
Thanks
base=2.0mv
output=33.4mV
+9V +9V
| (+). |
100k pot<------|\|
| (-)| \_____.__R3____Meter__.
| .-| / | |
| | |/| | |
| | | | |
| .------R2-' |
| | | |
| R1 | |
| | | |
Gnd Gnd Gnd Gnd
R1 = 1k
R2 = 10k
R3 = 10k