Suitable Transformer

Discussion in 'The Projects Forum' started by knobydobs, Nov 13, 2014.

  1. knobydobs

    Thread Starter New Member

    Aug 17, 2013
    Hia all,
    I have recently bought a Studiomaster 16-8-2 mixing desk on Ebay to find that there was no PSU included. After finding that these PSUs are really difficult to find, I have decided to attempt to build my own as the desk is a project in itself.

    I have included a schematic of the circuit that I need to build, the only thing I'm having trouble with is finding a transformer that supplies the voltages required. The transformer for the original PSU is a custom toroidal from what I can see.

    Picture of inside the original PSU:
    Another picture of the inside of the original PSU:
    Picture of the schematic:

    Thanks, knobydobs
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    Have you considered using 3 separate transformers respectively feeding the 3 bridge rectifiers? Or you could get a custom-made transformer ...... at a price.
    Johann likes this.
  3. MaxHeadRoom


    Jul 18, 2013
    Here in N.A. Toroids are relatively easy to come by, if you can find one with suitable Va it is very easy to wind on/modify for suitable winding's, generally around 2 turns/volt is needed.