Surge current suppression circuit and lamp

Abstract

The invention is suitable for the field of protection circuits and provides a surge current suppression circuit and a lamp. The surge current suppression circuit comprises a resistor R1, a relay K1, a switching tube and a porcelain capacitor C1; the switching tube is at an off state at the instant of electrifying the circuit when voltages at two ends of the porcelain capacitor C1 are not high enough to reach the threshold voltage of the control end of the switching tube, and a coil circuit of an electromagnet of the relay K1 is open-circuited, a switch of the relay K1 is powered off, the current loop of an electric load needs to pass through the resistor R1 to form a working loop, and the surge current generated at the instant of electrifying can be eliminated by the resistor R1; and after the surge current peak passes, when the voltages at two ends of the porcelain capacitor C1 reach the threshold voltage at the control end of the switching tube, the switching tube is at an on state, the switch of the relay K1 is switched on, and therefore the resistor R1 is separated from the working circuit. The surge current suppression circuit has the advantages of small size, low cost and incapability of reducing the electric efficiency of a protected circuit.

Description

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AI Technical Summary

Benefits of technology

This patented technology helps prevent damage caused by overcurrent flow during normal operation without reducing its effectiveness or increasing costs compared with existing methods such as fuse circuits that are bulky and expensive. It uses resistors instead of traditional components like transistors for better performance while maintaining their compact design.

Problems solved by technology

The technical problem addressed by this patented technology relates to prevention of excessive voltage from being applied across electronic equipment during times when there're no electricity available for use due to accidental damage caused by high voltages that could occur if too much charge was left on certain parts of these systems.

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