ecaits New Member May 26, 2016 #1 I want to use op-amp as inverting amp with a gain of (minus) one and positive dc voltage signal is applied to inverting terminal. So I should get same negative dc voltage on output. Which circuit I need to use??
I want to use op-amp as inverting amp with a gain of (minus) one and positive dc voltage signal is applied to inverting terminal. So I should get same negative dc voltage on output. Which circuit I need to use??
tomizett Active Member May 26, 2016 #2 This should explain it: https://www.quora.com/How-OP-AMP-is-used-as-inverting-and-non-inverting-amplifier
This should explain it: https://www.quora.com/How-OP-AMP-is-used-as-inverting-and-non-inverting-amplifier
crutschow Well-Known Member Most Helpful Member May 26, 2016 #4 Note that you need both a positive and negative supply to the op amp to get a negative output voltage.
Note that you need both a positive and negative supply to the op amp to get a negative output voltage.
ecaits New Member May 26, 2016 #5 I have already tried same thing as shown in attached file. But the output result is 4.92V i.e. +Vcc. Attachments Inverting Voltage Follower - Simulation Result.jpg 113.6 KB · Views: 130 INVERTING VOLTAGE FOLLOWER.JPG 13.8 KB · Views: 117
Kerim Member May 27, 2016 #6 It seems the pins of the model used for the opamp are not for LMP7721. Could you check this?