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Messages - Szcz

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Schematics and Layouts / Variable resistor on marshall scheme
« on: March 17, 2019, 11:03:34 PM »
I'm trying to figure out how variable resistor on this scheme should be connected to it, cause I've never seen vr symbol like this before. On this scheme is Mid and Bass resistors. Can anyone explain how to do that with the actual potentiometer, cause there are just 2 pins on the scheme instead of 3 like on the Gain. Thanks

Yes thanks, when you wrote it, I almost finished scheme in kicad, but if you can, do you know where is the plus of the bridge? Cause it's a little bit confusing here and I don't know did I did it right.

Oh, and if there are two op amps on the scheme and they are mono(?), then shold I use one TL072, or two TL072?

So the only thing that will mater here is that op amp should be dual? Ok, thanks

Schematics and Layouts / Operational Amplifier in Marshall 5010 scheme
« on: March 17, 2019, 03:43:51 PM »
I found a scheme for a Marshall 5010 ss amplifier, that I'd want to make. There is a problem, that I don't know which operational amplifier should exactly be according to this scheme. There are two of them and both of them aren't named. Does anybody know what should it be?
P.S. If I wrote anything wrong and you don't understand the question, write me about it and I'll write it again. English isn't my 1st language.

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