Beseler Dichro DG-1 power supply connector pinout

Discussion in 'Darkroom Equipment' started by usuthu65, Oct 9, 2012.

  1. usuthu65

    usuthu65 Member

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    Hi all,

    I am trying to find out what the voltage pinout is for the 5 bladed connector on the old (Blue) Beseler Dichro DG-1 colorhead going to the transformer power supply. The supply did not come with the head and I need to jury rig a replacement. The connector is the nearly black one in the attached image, taken from another person who has the complete setup.

    Thanks in advance.

    12783003.jpg
     
  2. Chan Tran

    Chan Tran Member

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    borrow the unit from your friend and measure the voltage. I don't have a schematic (I do have one for the CB-7 but only up to the AC plug but not include the transformer or color head). I have mine in storage but I have measured the voltage before. It's two 24VAC supply plus ground that what I remember. Because it's 2 24VAC supply I did thought I could substitute the transformer with 2 10A 24VDC regulated supply and have a very stable light output.
     
  3. usuthu65

    usuthu65 Member

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    Actually the photo was from an auction I found a while ago so sadly no friend to borrow from. Sorry to be confusing. However, I think you have given me the key and I'll try to trace wires beyond this point inside the chassis, especially if it's that simple.

    Correction: in your reply, you used 24 VAC in two places but 24 VDC in another. Is this a simple transformer (i.e. AC to AC) or do the lamps need DC voltage?
     
    Last edited by a moderator: Oct 9, 2012
  4. Chan Tran

    Chan Tran Member

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    Oh I am sorry for confusing you. The 5 pin connector I believe 2 pins each to each lamp and a ground. You can easily verify that with an ohm meter. Both lamps takes 24VAC and that's all.
    I was talking about replacing the transformer with DC power supply to have more stable voltage. Sorry for confusing you.