What didn't work? Your lousy MultiSIM program? it doesn't have a model for an MC34071 opamp.By the way, that MC34071 you were talking about, when I replaced my LM741CN's with those my amplifier circuit didn't work...like I was getting zero gain out of the opamps...what's wrong? Is there a certain frequency or minimum input voltage required to use them or something?
No you didn't. You had a higher output level than the rails.The problem is, when I used the MC34071 in Multisim, I was getting a higher gain than the rails.
If you measure the DC voltage at the output of the opamps and at the output of the amplifier then you will know exactly what is wrong.And when I actually built my circuit on the breadboard and I replaced the LM741CN's with the MC34071's, I had no output at any of the opamps or the amplifier as a whole. Why do you think it was so?
It might not work with a 43 years old 741 opamp because many of them do not work with a total supply as low as 10V. But it should work with a newer and better MC34071 opamp because all of them work when their total supply is from 3V to 44V.Like, my circuit on breadboard works with LM741 (I used speakers to test) but it doesn't work when I replaced them with MC's.
Because you didn't look at the datasheet for the MC34072 to see that its pins are completely different from a 741 opamp because it has TWO opamps inside. An MC34074 has FOUR opamps inside.I wanted to increase the voltage gain by using the MC34072P (I could only find this model at the store) and I was getting zero output (there was no sound coming out of the speaker). I was wondering why...
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