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/diy/ - Do It Yourself

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>> No.1158987 [View]
File: 374 KB, 2408x1146, Screen Shot 2017-04-10 at 12.50.09 PM.png [View same] [iqdb] [saucenao] [google]
1158987

Ok all those guys from the previous thread saying you can get a voltage difference of 24V from a 12V battery just by using an amplifier are full of shit. The whole "I have a voltage difference of 12V after each of the two amplifiers, so they add to 24V" is like trying to take two 12V pairs of wires from a battery in parallel and adding them in series to get 24V. It doesn't work.

As you can infer from pic related, by using the two opamps you essentially double the gain, but the signal can never reach an amplitude above 6V, just the same as changing the gain on a normal opamp.

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