The Elektor Forum will close. See also this link. From Friday March 15st it is no longer possible to log in to the forum. However, the content of the forum will remain visible until the end of March. As of April 1st the forum will definitely go off the air.

LM741 not amplifying

The radio-active topic

LM741 not amplifying

Postby yamadanao » Mon Jun 19, 2017 10:16 am

I used LM386 to amplify but its minimum 20x gain is to much for me use because my signal is maximum +-0.5v ac , riding 1V dc .
I am seeing a signal on scope but I cant hear anything when I connect the speaker [I am measuring without it]. Moreover the scope image is the same as the input image ,no gain ! I can't see what I missed here.

Here is the date sheet of lm741.
Posts: 1
Joined: Mon Jun 19, 2017 10:11 am

Re: LM741 not amplifying

Postby SteveMJ » Tue Jun 26, 2018 7:59 pm

The LM386 is an audio amplifier; one input and one output.

the '741 is an op-amp and requires components around it to make it 'operational'

How have you connected these?
Posts: 11
Joined: Tue Feb 13, 2018 11:38 am

Re: LM741 not amplifying

Postby teprojects1 » Thu Sep 27, 2018 3:22 am


LM741 is an operational amplifier and I have used it in my project, it works really great. You should have a look at LM741 Pinout here and also download its Proteus Simulation. That will help you in understanding it better.

Posts: 14
Joined: Wed Nov 23, 2016 1:44 pm

Return to RF & Communications

Who is online

Users browsing this forum: No registered users and 1 guest