Contactless single-live-wire single-control and double-control touch switch circuit

Abstract

The invention discloses a contactless single-live-wire single-control and double-control touch switch circuit. The contactless single-live-wire single-control and double-control touch switch circuit comprises a power circuit unit (1), a switch control circuit unit (2) and a touch control circuit unit (3) which are electrically connected in sequence. The switch control circuit unit comprises a single-pole single-throw switch (K2) formed by a triad AC semiconductor switch (TRIAC) (T2), or the switch control circuit unit comprises two single-pole single-throw switches (K2 and K3) correspondingly formed by two TRIACs (T2 and T3) respectively. Regardless of whether a lamp is in an on-state or in an off-state, AC voltages of the contactless single-live-wire single-control and double-control touch switch circuit all come from the TRIAC, and a touch induction mode enables on-off operation to be easier and more novel; due to the contactless design,, the on-off functions are more reliable, and the service life is longer; electricity consumption of the contactless single-live-wire single-control and double-control e touch switch circuit is greatly lowered and is smaller than 0.06 W; since a simpler single-live-wire power supply design is adopted, the cost is reduced, the reliability is improved, and the contactless single-live-wire single-control and double-control touch switch circuit can directly replace a common mechanical switch.

Description

technical field [0001] The invention relates to a lamp control switch circuit, in particular to a single live wire control touch switch circuit. Background technique [0002] In daily life, there are many occasions where it is necessary to control a certain electrical appliance in two different places. For example, the corridor lights of residential buildings are required to be able to be switched on and off both downstairs and upstairs; such as bedroom lights, It is also required that it can be switched on and off at the door of the bedroom and at the head of the bed for ease of use. These all require dual control switches. as attached figure 1 As shown, the traditional double-control switch is equipped with a single-pole double-throw switch in two positions, that is, a switch with a normally open contact, a normally closed contact and a common contact. The common contact is always connected to the normally open contact. One of the contacts or normally closed contacts is...

AI Technical Summary

Problems solved by technology

The utility model patent No. 201220186388.5 (announced on November 21, 2012) discloses a single live wire dual-control touch switch circuit. Point adhesion, contact ablation, low life, high power consumption, etc.

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