The Lambda LL-902-OV Regulated Bench Top Power Supply 20V / 0.65A
This power supply is in working and functions as intended. It is missing a binding post and two cosmetic discs for knobs.
Lambda Model LL-902 bench-type IC regulated laboratory power supply which provides an adjustable d.c. voltage range of 0-20 volts at currents from 0 to 0.65 ampere.
All-silicon DC power supply using integrated circuit to provide regulation system except for input and output capacitors, rectifiers, and series regulation transistors.