Zener diode characteristics apparatus

Study Zener diode characteristics with this Apparatus featuring two meters. It has been crafted to analyze the forward and reverse bias characteristics of a Zener diode. It includes a continuously variable DC regulated power supply (0-1.5v) with 4mm sockets, two meters measuring voltage and current with 4mm sockets output, and a series resistance connected to three Zener diodes (4.7, 8.2 and 68v) with connections outputted at 4mm sockets.