Trying to ID a Tube Power Supply

Discussion in 'General Technical Questions and Answers' started by W5EXJ, Aug 1, 2020.

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  1. W5EXJ

    W5EXJ Ham Member QRZ Page

    Hello! de W5EXJ. My father passed and left me all of his ham gear that he collected. I'm trying to identify this power supply. Below are photos of this supply. Can anyone identify it for me?

    IMG_20200801_113509.jpg IMG_20200801_113500.jpg IMG_20200801_113517.jpg IMG_20200801_113538.jpg
  2. K8JD

    K8JD Ham Member QRZ Page

    Likely was Made to deliver a few hundred volts with a possible voltge regulator , and filament (Heater) voltage , maybe 6.3 V AC for a tube powered transmitter . I built a few of thoswe when I was a Teenager in the 1960s ! Can you read the tube numbers (stamped on the glass envelope) ?
  3. W5EXJ

    W5EXJ Ham Member QRZ Page

    Thanks! The skinny one is by the metal shield is a 5U4GA/B. The other fatter one is made by RCA and only numbers on it around the base is O-I7
  4. AH7I

    AH7I Ham Member QRZ Page

    Context would help. It was made to power something. What else is there?
    It appears to be commercially produced and then modified maybe repurposed.

    73, -Bob ah7i
  5. W5EXJ

    W5EXJ Ham Member QRZ Page

    The transformer has 95-1235, 260 WATTS, 138008 on it and the choke has these 2 numbers on the top, 343006 and 95CZ1218.
  6. W5EXJ

    W5EXJ Ham Member QRZ Page

    I did a google search on the 95-1235 transformer number and looks like it could be a power supply for an old Zenith TV, model # H3475R from the early 50s.
    K0UO likes this.
  7. WB2WIK

    WB2WIK Platinum Subscriber Platinum Subscriber QRZ Page

    To me it looks like model VYOLD-001.:)
  8. K0UO

    K0UO Platinum Subscriber Platinum Subscriber QRZ Page

    It looks very familiar, something like many of us Homebrewed out of the junk box with the 5UG
    Most of us old-timers spent hours cannibalizing TV set and old radios

    300 to 500 volts and 6 volt that would run a lot of different things
    WA9SVD likes this.
  9. N3PM

    N3PM Ham Member QRZ Page

    Is that a relay stuffed in there, under the transformer?
    Drawing a schematic would be a great exersize.
    Mike N3PM
  10. N3PM

    N3PM Ham Member QRZ Page

    Could that be two rectifiers paralleled? Looks like 2 and 8 go to 2 and 8, and the 4 and 6s as well.
    Mike N3PM

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