117Z3 Vacuum Tube – Half-Wave Rectifier for Transformerless AC/DC Radios

The 117Z3 is a half-wave rectifier with a unipotential cathode, built to run directly off a 117V AC/DC line without a power transformer.

• Tube type: Half-wave rectifier
• Heater: 117V AC/DC, no transformer required
• Typical use: Rectifier stage in transformerless AC/DC and battery radio power supplies

Miniature-construction cousin of the 117Z4 and 117Z6.