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PS-40A-1. AC Bench Power Supply | Radioaficion Ham Radio

PS-40A-1. AC Bench Power Supply


PS-40A-1. AC Bench Power SupplyPS-40A-1 Power Supply

Bench power supply capable of direct line or 12 to 130 VAC variable output. Fused output at 10 A for line and 5 A for variable output.  Includes voltage and current displays and external monitor outputs.


  • Intended for bench testing AC powered equipment.
  • Variable transformer allows voltage to equipment under test to be brought up slowly.
  • Excellent for testing input voltage range over which equipment operates correctly.
  • True RMS current meter dedicated to measuring output current.
  • With external BNC monitors, the shape of non-RMS current can be measured.
  • External monitors are phased correlated for power factor calculations.


  • Selection of straight line voltage or variable 12 to 130 VAC output.
  • Voltage monitored with high Voltage rectifier and averaged for RMS display.
  • Current monitored with true RMS converter for up to 5:1 crest factor.
  • External BNC monitors for voltage and current.
  • All modes fused with front panel fuses.
  • Front panel NEMA 5-15R receptacle

Download Document items
Complete schematic for PS-40A-1.
Material List - PS40A100 Chassis Assembly
Prototype tests and notes
Component locator for assembly

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