What circuit is the solid state relay used in?

Solid-state relay is a contactless electronic switch with isolation function, and there are no mechanical contact parts in the switching process. Therefore, solid-state relay not only has the same function as electromagnetic relay, but also has the characteristics of logic circuit compatibility, resistance to vibration and mechanical shock, unlimited installation position, good moisture-proof, mildew-proof and corrosion-proof performance, excellent explosion-proof and ozone pollution-proof performance, low input power, high sensitivity, good electromagnetic compatibility, low noise and high working frequency. At present, it has been widely used in computer peripheral interface equipment, temperature regulation, speed regulation, dimming, motor control, electric furnace heating control, power petrochemical, medical equipment, financial equipment, coal, instrumentation, traffic signals and other fields.