High-isolation-voltage and high-current optical relay with self-recovery function

Abstract

The invention relates to the technical field of optical relays, and further discloses a high-isolation-voltage and high-current optical relay with a self-recovery function. The optical relay comprisesa shell body, a circuit mainboard, an input wafer, an output wafer, a control wafer, a light emitting diode, a sampling resistor and pins, wherein the circuit mainboard is arranged in the shell body;the input wafer is fixedly arranged on the surface of the circuit mainboard; the output wafer is fixedly arranged on the surface of the circuit mainboard; the control wafer is fixedly arranged on thesurface of the circuit mainboard; the light emitting diode is fixedly arranged on the surface of the circuit mainboard; the sampling resistor is fixedly arranged on the surface of the circuit mainboard; the pins are fixedly arranged on the side walls of the circuit mainboard; and the ends, away from the circuit mainboard, of the pins extend out of the shell body. The high-isolation-voltage and high-current optical relay with the self-recovery function has the advantages of automatically recovering high isolation voltage and high current, meets the isolation requirement of 4000 Vrms, is realized by a 10 A load optical relay, and has the functions of channel state feedback, overcurrent protection and self-recovery at the same time.

Description

technical field [0001] The invention relates to the technical field of photorelays, in particular to a photorelay with self-recovery, high isolation voltage and high current. Background technique [0002] At present, relays with high isolation voltage and high current at home and abroad (isolation voltage of 4000Vrms and above, conduction current of 3A and above) are basically electromagnetic relays. The problem of this kind of relay is that the working life is limited, reaching the level of 100,000 times. After the action, the probability of failure is very high; secondly, it is large in size and not easy to install on the PCB board. [0003] Germany's Infineon has acquired IR (International Rectifier Corporation) in the United States and has become a leading company in photorelay products, including Japan's Toshiba and Omron, which have launched their own characteristic photorelay products to replace traditional ones in high reliability application scenarios. Electromagne...

AI Technical Summary

Problems solved by technology

However, none of their photorelay products have the characteristics of high isolation voltage and large load current at the same time.

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