Hello everybody,
The output of an inverting amplifier based on a UA741 seems to be "die" once it is connected to a signal processing circuit (which has a separate power source.)
This does not happen if I connect a source to the 2nd circuit directly, and the amplifier works fine on its own.
I'm suspecting that this could be due to the second circuit pulling more current from the amplifier than the ua741 can handle. Am I right in this suspicion, or could there be other reasons?
And if so, is replacing this amplifier with a mosfet amplifier or so the only solution?
Also, the quality (not the gain) of the amplifier output seems to drastically improve if I add a resistor in parallel to the input voltage. What could be the explanation for this?
Thanks for your generous help!
The output of an inverting amplifier based on a UA741 seems to be "die" once it is connected to a signal processing circuit (which has a separate power source.)
This does not happen if I connect a source to the 2nd circuit directly, and the amplifier works fine on its own.
I'm suspecting that this could be due to the second circuit pulling more current from the amplifier than the ua741 can handle. Am I right in this suspicion, or could there be other reasons?
And if so, is replacing this amplifier with a mosfet amplifier or so the only solution?
Also, the quality (not the gain) of the amplifier output seems to drastically improve if I add a resistor in parallel to the input voltage. What could be the explanation for this?
Thanks for your generous help!
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