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  1. Externet

    nad receiver volume control problem

    Those parts are typically made of unobtanium. If the problem is noise and you have very skilled and experienced hands, potentiometers can be dismantled and cleaned with alcohol or dismantled and the wipers derailed to virgin paths to restore clean funcionality. You must remember well how...
  2. Externet

    What is this? Does it look fried?

    Both the PNP transistor and the 100? Ohm resistor seem fried.
  3. Externet

    Waveform signal inversion...

    Hi all. I would appreciate suggestions to invert an existing sawtooth signal /|/|/|/|/|/|/|/ onto a \|\|\|\|\|\|\|\ Preferably with the use of a common emitter transistor circuit Note no amplification (gain) is desired Note the sawtooth signals are 18 Vpp riding on DC The bottom...
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