In this trainer two independent solid state relay modules. Are used for connecting AC loads. This relay consists of two TRIACS. The first TRIAC gets a control signal from a digital circuit. There is an opto-isolator between the control circuit and the first TRIAC. Depending on the status of the control signal, the first TRIAC is either activated or not. When activation signal is received by the first TRIAC, it sends gate pulse to second TRIAC. Thus enabling AC load to be activated. The solid state relay used in this trainer comes in the form of a packed module consisting of opto-isolator and TRAIC devices.

This module can at best be used in conjunction with a dedicated hardware or a Microprocessor or a Microcontroller or any other data acquisition system at the time of prototype development or just for experiment. Input signal level: TTL (0 to 5v DC). Output : 230V AC @ 3A.