Thyristor driving principle and circuit

Photocoupler

The following is the circuit diagram of the thyristor drive principle and circuit

Thyristor driving principle and circuit

Principle: This circuit is mainly composed of a novel pyroelectric infrared sensing special device TDH98072. The control circuit assembled by the device has the advantages of simple circuit, simple debugging, high reliability and the like. The device can also be equipped with other control circuits such as burglar alarms, automatic control lights, automatic water valves, and more. The photoresistor CdS should select a product with a bright resistance (resistance in a brighter environment) less than l00kΩ and a dark resistance greater than 3.3MΩ. The pyroelectric infrared probe PIR can be selected from any small thermal release probe (with lens, such as ANM1).