544-P3

The General Radio 544-P3 AC Power Supply was introduced in Catalog K1 (1939) and remained available through Catalog R (1963).

The Type 544-P3 in an AC power supply for the Type 544-B Megohm Bridge. Located in the unshielded upper section of the 544-B oak case, it supplies the test voltage and bridge operating voltages. Visible in the photos are the test voltage jumpers.

Specifications

• Output Voltage: 100 V or 500 V, jumper selectable
• Short Circuit Current: 12 mA

Links

• Experimenter describing Type 544-P3 February 1940

Photos

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