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5V Opamp connecting to a higher voltage power amp?
I've a small preamplifier, which has an opamp powered at +/- 5V supply.....the output of this opamp feed into an power amplifier powered at 18V
The input pin of the power amplifier is biased at 1/2 VCC ....9V.
The output of my opamp is biased...
Ok, I've a unique situation.
I want to use a standard Single Ended stereo amplifier, but to eliminate the output caps, I want each of the L/R channel output 'ground connection' to be tied to a common 1/2 VCC voltage.
Now I know that BTL amps essentially do this (eliminate the output cap), but...
Thanks for the line of questioning....if you mean using a resistor to route negative feedback to the input thereby dropping the gain, well I've not tried but I will tonight!.
Essentially I've a TL072 used as a preamp - it's wired as non inverting stage - it feeds into a 1W BTL audio amp. I...
My requirements are for a mono Audio amplifier IC capable of a peak to peak output swing of 4.2V into 8ohms, operating off a single 5V rail (frequency range is about 100Hz- 1kHz) - but an IC that doesn't apply a crazy voltage gain.
Just about all output ICs I've tried apply a voltage gain of...
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