A New Type of Solid State Relay

Abstract

The invention discloses a novel solid-state relay, and belongs to the technical field of relays. The novel solid-state relay comprises a control input end, an isolating circuit, a trigger driving circuit, a logical reverse circuit, an output circuit and a floating direct-current voltage-stabilized source. The grids of two power field-effect transistors are controlled through the floating direct-current voltage-stabilized source, so that control of an alternating-current load or a direct-current load is realized, and the on-state voltage drop is low. The novel solid-state relay has high universality and a wide application range.

Description

technical field [0001] The present invention relates to a solid state relay, more specifically, to a novel solid state relay. Background technique [0002] The English name of solid state relay (also known as solid state relay) is Solid State Relay, or SSR for short. It is a non-contact switching device with relay characteristics that uses semiconductor devices instead of traditional electrical contacts as switching devices. The single-phase SSR is a four-terminal active device, including two input control terminals, two output terminals, and optical Isolation, after adding a DC or pulse signal to the input to a certain current value, the output can change from the off state to the on state. Solid state relays are reliable in operation, long in life, no noise, no spark, no electromagnetic interference, fast switching speed, strong anti-interference ability, small size, impact resistance, vibration resistance, explosion-proof, moisture-proof, corrosion-proof, and can be comp...

AI Technical Summary

Problems solved by technology

However, high-power integrated light-controlled MOS solid-state relays are expensive and have been monopolized by foreign chip manufacturers, which restricts the promotion and use of solid-state AC relays.

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