Good working HP 6284A power supply. Tested working under load.
- 0-20+ volts, 0-3A current
- coarse and fine voltage and current controls
- linear, fanless design for low-noise output and quiet, reliable operation
- meter has two ranges each of voltage and current
- floating output, can be put in series with other supplies for higher voltage
- remote programming using back-panel terminals
- schematics available on line. Serviceable transistor-based design.