0
\$\begingroup\$

I have an Operational Amplifier in Multisim 14 but i don't know how can i measure the Gain of this circuit. Is there any automatic way to do this?

Operational Amplifier example in Multisim 14

\$\endgroup\$
1
  • \$\begingroup\$ 1) measuring is done on a bench, this is a simulator, you're simulating. 2) the + input of the opamp is floating, you must connect it somewhere. 3) what is gain ? It is the ratio between output amplitude and input amplitude. Determine those, divide and you have your gain. \$\endgroup\$ – Bimpelrekkie May 18 '17 at 13:31
2
\$\begingroup\$

You can measure gain with the following steps;

1- Click Simulate > Instruments > Measurement Probe

2- Place the probe on the wire between the voltage source and the resistor.

3- Click Simulate > Instruments > Preset Measurement Probes > Voltage with reference to probe

4- Select Probe1 as the reference

5- Place the probe on the output. Notice that the visible measurements includes gain.

\$\endgroup\$
2
  • \$\begingroup\$ Thanks a lot wooz! I followed your instructions but i need one more tip. In the link of the image below i have Vgain(dc) = -188k. Should i divide Vgain(dc) with V(dc) of probe 1 to find the actual gain? ibb.co/crEwfk \$\endgroup\$ – bala9 May 18 '17 at 15:15
  • \$\begingroup\$ I am sorry to be late. You can remove Vgain(dc) or V(dc) value from probe2. 1- Right click probe2 and select properties. 2- In parameters section you can turn off the parameters you don't want to appear. \$\endgroup\$ – user125318 May 24 '17 at 12:00

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.