UA 741 as voltage follower refuses to give low output

[J.b.]

741 voltage follower

Dear all,

I tried to use the 741 as a voltage follower. The IC should give an output that can vary between 0 and 2.4V. I noticed, however, that the IC always has a minimum output of 1.92V even when the input voltage is lower. Is this because I used 0V on the V- and 12V on the V+. If so, can sombody advice me a suitable opamp that can work with ground and 5 or 12V.

Thanks a lot

 

[flatulent]

voltage follower 741

You have properly diagnosed your problem source. What you look for in selecting another amplifier are the words "rail to rail" input and output.

 

[J.b.]

741 follower

Would an LM358 help me out then?

 

[snb7aug]

voltage follower with minimum output

i don't remeber exactly, i used it before 2 years. u should use +12V, -12V as a reference voltages on pin 2,5 ( i think that)

 

[VVV]

minimum voltage to 741

Yes, the LM358 common mode voltage includes ground, so it will help at low input voltages.