Semiconductor – Zener Diode Unit

With Digital or analogue display meters, 2 to 12 volts in step of 2 volts..
Four 4mm socket terminals for AC and DC output separately with fuse and indicator in ventilated painted steel cabinet.
a) 4 Amp.
b) 5 Amp.

Mounted on transparent base, with 4mm color coded sockets, with circuit diagram printed for demonstration.