Weird little transformerless projector amp

Discussion in 'Shock Brother's DIY Amps' started by DCW74, Oct 29, 2018.

  1. DCW74

    DCW74 Tele-Meister

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    I recently picked up an old DeVry 16mm sound projector for dirt cheap. It's cheap because it's missing an arm, and is useless as a projector without it.

    Anyway, I am getting an isolation transformer for it so it can be used safely, and converting it into a little combo amp. Normally, I would just remove the oscillator circuit, but since this is transformerless, I need to keep all the filaments in the circuit (and this tube is a half wave rectifier as well as a pentode). So I am wondering if there is anything I can do with the oscillator and oscillator tube.

    Any suggestions would be cool. 20181026_205113.jpg
     
  2. DCW74

    DCW74 Tele-Meister

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    Well, I just realized that I asked a dumb question. There are obviously two sets of full current in this amp.
     
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