Switch circuits and lamps with self-locking and isolation functions

Abstract

The invention discloses a switch circuit and a lamp with self-locking and isolation functions. The switch circuit includes a first isolation coupler, a second isolation coupler and a third isolation coupler, and has a simple structure and is easy to implement. The first isolation coupler includes a first input unit and a first output unit; the first input unit receives a trigger level signal, and after triggering, the first output unit is turned on through coupling; after the trigger is stopped, the first output unit is disconnected from the coupling Disconnect to achieve isolation function. The second isolation coupler includes a second input unit and a second output unit; after the first output unit is turned on, the second output unit is turned on through coupling, and after the first output unit is turned off, the second input unit and the second output unit are maintained. The coupling between the second output units realizes the self-locking function. The third isolation coupler includes a third input unit and a third output unit; when the second input unit is turned on, the third output unit serving as the output end of the switch circuit is turned on through coupling.

Description

technical field [0001] The invention relates to a switch circuit and a lamp, in particular to a switch circuit and a lamp with self-locking and isolation functions. Background technique [0002] The switch circuit is a circuit commonly used in electronic equipment, which is connected between the power supply and the working circuit. By turning on or off the switching circuit, the working circuit is controlled to take power from the power supply, thereby controlling whether the electronic equipment works. There are many types of switch circuits. For a switch circuit that is turned on by triggering the trigger level, in many cases in practical applications, it is necessary to continue to maintain the switch circuit after the switch circuit is turned on. A common method at present is to add an integrated circuit (IC) as a maintenance circuit to continue to maintain the conduction of the switch circuit after the switch circuit is conducted. However, the circuit structure of the...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a switch circuit with self-locking and isolation functions in view of the defects in the prior art that an integrated circuit IC needs to be added in order to maintain the continuous conduction of the switch circuit, resulting in increased cost and complicated circuit structure and lamps

Images