Pn Junction Diode And Zener Diode Characteristics Trainer Analog is an SSI India product in the BASIC ELECTRONICS LAB category. Key specifications include SKU: PBE-E003A. DC Supply IC Regulated 0-3/30V DC, 150mA. Operated on Mains power 230V, 50Hz +10% Components are mounted on the panels are. Voltage Control through Potentiometer.