Heathkit HP-23C Power Supply for Transmitter, Transceiver, Audio Amp, RF Amp
Heathkit HP-23C Power Supply for Transmitters - Transceivers - Amplifiers. It was used originally for powering the following Heathkit Transceivers and Transmitters. SB-100, SB-101, SB-102 HF transceivers, as well as the SB-400 / SB-401 transmitters. HW-100 and HW-101 ("Hot-Water 101") 5-band HF transceivers. Compatible with various other Heathkit transmitters (such as the DX-60 series when adapted) and SSB transceivers.
Homebrew vacuum tube RF transmitters or linear power amplifiers. Vintage gear from other manufacturers e. Swan, Drake, or Hallicrafters that required external multi-rail DC high-voltage and filament supplies, using custom cable wiring. (unloaded/light load) for the final RF power amplifier tube plates e.
+250 VDC or +300 VDC. +275 to +350 VDC unloaded for driver stages, receiver circuits, oscillators, and screen grids. Fixed / Adjustable Bias Voltage. On earlier revisions to provide proper grid bias control for power output tubes. High-current supply to power tube heaters. It is turned on and off via the power switch on the connected transceiver through control lines in the umbilical cable. The high voltage is wired as a voltage doubler and can be rewired for half that (400 Volts) if needed for a tube audio amplifier.
