UJT CONTROLLED SCR TIME DELAY CIRCUIT Objective of this experiment: 1. To construct time delay circuit using SCR triggered by UJT. To build relaxation oscillator using UJT and the timing can be varied by different capacitors and potentiometer. The pulses generated by UJT should be given to gate for triggering. The SCR can be turned ON with reference to the input pulses. Built in regulated, power supply: + 15V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms Qty :