Reed power-on switchover time-delay shutdown circuit

Abstract

The invention discloses a reed power-on switchover time-delay shutdown circuit. The reed power-on switchover time-delay shutdown circuit comprises a two-way reed switch and a reed monitoring circuit, wherein two groups of parallel time-delay shutdown circuits are connected between the output end of the reed switch and the input end of the reed monitoring circuit, and the two groups of parallel time-delay shutdown circuits are mutually connected to form a discharging loop; the output end of the reed monitoring circuit is connected with a power supply, and the output end of the power supply is connected to the reed switch. When the reed switch is subjected to external magnetic switchover, the reed monitoring circuit is automatically power-on and delayed for a few of seconds, carries out corresponding actions on the switching changes of the reed switch in the few of seconds, and then automatically cuts off the power supply of the reed monitoring circuit, and the whole machine has no power consumption in a standby state, thus saving lots of electric energy and meeting the energy conservation and environmental protection policy.

Description

technical field [0001] The invention relates to a reed switch switching power-on delay turn-off circuit, which belongs to the technical field of energy-saving and environment-friendly circuits. Background technique [0002] Reed switch elements are widely used in state sensors as a low-cost magnetic trigger element. At present, when the external magnetic environment does not change, the state of the reed switch is always on or off. To determine whether the reed switch is triggered by the change of the magnetic environment , it is necessary to ensure that the circuit is always in the monitoring state, so the circuit needs continuous power supply, and the power loss caused by continuous power supply is considerable. In some occasions with strict requirements on power supply capacity, it will not be able to guarantee its long-term stable work. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a reed switch power...

AI Technical Summary

Problems solved by technology

At present, when the external magnetic environment does not change, the state of the reed switch is always on or off. To determine whether the reed switch is triggered by the change of the magnetic environment , it is necessary to ensure that the circuit is always in the monitoring state, so the circuit needs continuous power supply, and the power loss caused by continuous power supply is considerable. In some occasions with strict requirements on power supply capacity, it will not be able to guarantee its long-term stable work.

Images