Alternating-current slow start switch

Abstract

The invention discloses an alternating-current slow start switch. The alternating-current slow start switch comprises a single-chip microcomputer, wherein the single-chip microcomputer is connected with a rectifying circuit and a current amplifying circuit; the rectifying circuit is connected with a step-down circuit; the current amplifying circuit is connected with a silicon controlled step-downcircuit and a relay; and the silicon controlled step-down circuit and the relay are connected with a load respectively. The alternating-current slow start switch has the advantages that firstly, starting current becomes controllable from uncontrollable, so that model selection of a protective tube is facilitated; secondly, excessive peak value of starting voltage is effectively inhibited, and thevoltage resistance requirement of input components and parts is reduced, so that the cost is reduced; and thirdly, the switch is applicable for LED lamps and energy-saving lamp light sources, low-voltage buffer starting is firstly realized and then full-voltage normal starting is realized, so that people cannot feel discomfortable due to high light at the instant of electrification, and the eyes are effectively protected.

Description

Technical field [0001] The invention relates to an AC switch, in particular to an AC slow start switch. Background technique [0002] Most of the existing technologies are instant-on switches, which are generally composed of five parts: panel, switch carrier fluid, switch contact, switch nozzle and base. There are two pieces of metal called contacts in the switch, and two contacts are in contact. The current will form a loop when the two contacts are not in contact, and the current will open when the two contacts are not in contact. The existing switch has the following shortcomings. The instantaneous peak voltage of the direct start is too high and superimposed, which may break the input electrolytic capacitor of the switching power supply and cause module failure. The instantaneous peak current of direct start is generally several times or even dozens of times the rated current, which is far beyond the endurance of the switching power supply and may damage or burn the input mod...

AI Technical Summary

Problems solved by technology

[0002] The vast majority of existing technology is an instant-on switch, which is generally composed of five parts: a panel, a switch carrier, a switch contact, a switch mouth and a base. There are two pieces of metal called contacts in the switch, and the two contacts are in contact When the current forms a loop, the current is open when the two contacts are not in contact. The existing switch has the following disadvantages. The peak voltage at the moment of direct start-up is too high and superimposed, which may break down the input electrolytic capacitor of the switching power supply, resulting in module failure. The instantaneous peak current of direct start-up generally reaches several times or even dozens of times of the rated current, which is far beyond the withstand capacity of the switching power supply, and may damage or burn the input module

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