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Power requirements for Proto-Board PB-503

Discussion in 'Troubleshooting and Repair' started by pb-503 owner, Nov 5, 2015.

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  1. pb-503 owner

    pb-503 owner

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    0
    Nov 4, 2015
    I would like to respond to an old archived thread in case anyone in the future needs this information.

    I was in desperate need for this and was fortunate enough to find the information, I feel I should share it for those not so lucky.

    https://www.electronicspoint.com/threads/power-requirements-for-proto-board-pb-503.61310/

    Looking at the female connector on the PB-503 board, there is a 5 pin din input. If we label the inputs on the board from 1 to 5 from left to right, the input voltages needed are:

    1: -26 volts*
    2: Not connected
    3: Ground
    4: +10.5 volts
    5: +26 volts*

    *The measured output of the transformer is closer to ±22.5v. The 10.5v output reads accurate.

    PB-503 Input connections:
    pb503_400ca1.jpg

    The current outputs for the 400 CA1 transformer are listed as +10v 1.2A, ±26v 0.6A
     
  2. shrtrnd

    shrtrnd

    3,688
    457
    Jan 15, 2010
    Thanks pb-503 owner.
    Yes. When I Google information I frequently am routed to electronicspoint for the answer.
    I, too, often update my posts when I have the answer (sometimes years later) that I was looking for,
    specifically to help anybody else who has the same problem in the future.
    Your update is much appreciated.
     
  3. Katie Eells

    Katie Eells

    2
    0
    Nov 9, 2015
    Thanks for sharing.
     
  4. kenny256

    kenny256

    1
    0
    Jan 4, 2020
    Thanks for posting, i have one too and looking for the 400-CA-1 AC adapter or the pinout and voltages in order to make one.

    i found this updated pinout under the discontinued products at global spec'ies, the DIN must use this weird skip pattern for numbering the pins.

    [​IMG]

    there is an internal power supply board in the PB503 that regulates these unregulated voltages from the 400CA1 to feed the banana power jacks, +5V red, adj +5 to 15V yellow, adj -5 to 15V blue.
     
    Last edited: Jan 4, 2020
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