Digital-to-analogue hybrid multi-path independent control switch circuit

Abstract

The invention discloses a digital-to-analogue hybrid multi-path independent control switch circuit, which is composed of a used electric appliance loop module, a level conversion module, a switch control module and a low-voltage voltage-stabilizing direct-current generating module with positive and negative 5V. The switch control module is connected with the level conversion module and outputs voltage for converting high level into +5V and converting low level into -5V through the level conversion module; the output of the level conversion module is connected to grids of two inverted reverse conducting thyristors in the used electric appliance loop; connection and disconnection of the thyristors are controlled by the grids; when the thyristors are on, the used electric appliance loop is on and the used electric appliance is in an operating state; when the thyristors are off, the used electric appliance loop is off and the used electric appliance stops operation so that the switch module controls the used electric appliance; the low-voltage stabilizing direct-current generating module with positive and negative 5V is used for generating voltage source of positive and negative 5V, wherein the voltage source of +5V is used for as the power voltage for inputting four exclusive or gate chip and the voltage source of -5V is used as the voltage source of -5V of the level conversion module.

Description

technical field [0001] The invention relates to a circuit in which a plurality of switches control an electrical appliance, in particular to a switch circuit in which a plurality of switches independently control a electrical appliance. Background technique [0002] In life (or production), there is a need for a switching circuit that has a switch in different places to independently control (not be affected by other switches) the work and stop of a certain electrical appliance. Such as a staircase switch, but its defect is that there are only two independent control switches, and the circuit connection of more than two will be very complicated, and ordinary people in life do not have much knowledge about circuit connection, so it is very inconvenient to apply. Contents of the invention [0003] (1) Technical problems to be solved [0004] In order to overcome the problem of independent control of electrical appliances by multiple switches in daily life, the present inven...

AI Technical Summary

Problems solved by technology

For example, the staircase switch, but its defect is that there are only two independent control switches, and the circuit connection of more than two will be very complicated, and ordinary people in life do not have much knowledge about circuit connection, so it is very inconvenient to apply

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