• Year
  • 1968
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 309399
    • alternative name: GenRad

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110;220 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Power Supply 1262-B - General Radio Company;
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 175 x 85 x 130 mm / 6.9 x 3.3 x 5.1 inch
  • Notes
  • Bolts on to end of the Sound-Level Meter 1551C. Not intended to be added or removed in normal use as the cover has to be removed. The 110V / 220V selection is by internal soldered wires on the transformer. It provides three filament and one HT supply via a 6 pin Jones plug, so don't connect to mains while not bolted on as one pin has about 65V.

  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

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The model Power Supply is part of the collections of the following members.


Forum contributions about this model: General Radio: Power Supply 1262-B

Threads: 1 | Posts: 2

Examination of the Sound Level meter 1551-C reveals it has two filament supplies, 20mA and 40mA using two pins on the Jones connector or the two D size 1.5V cells. All the batteries must be removed before installing the PSU as the connections are shared. The third filament supply on pins 5 and 6 isn't used. It's floating unlike the other two filament supplies.

Examination of the PCB reveals that the HT supply winding and the other two filament supplies share a common ground / 0V connection. Actually the two used supplies use a common full wave rectifier and centre tapped winding, with only the filtering and selenium shunt regulator diodes being separate.

Perhaps the PCB or entire unit was used for another product or earlier model.

Michael Watterson, 28.Mar.19

Weitere Posts (2) zu diesem Thema.