Ultralow-power-consumption and high-efficiency electromagnet control circuit

Abstract

The invention provides an ultralow-power-consumption and high-efficiency electromagnet control circuit. The ultralow-power-consumption and high-efficiency electromagnet control circuit comprises an electromagnet, a power input processing circuit, a boosting energy storage and feedback control circuit, a control chip micro processing unit (MCU) circuit, an undervoltage detection circuit and a power transistor driving circuit connected with the electromagnet; an external power supply V1 is output to the electromagnet through the power input processing circuit and the boosting energy storage andfeedback control circuit; the control chip MCU circuit outputs a boosting switch control signal to the boosting control end of the boosting energy storage and feedback control circuit and inputs a feedback signal output from the feedback output end of the boosting energy storage and feedback control circuit; the input end of the undervoltage detection circuit is connected with the power input processing circuit, and the output end of the undervoltage detection circuit outputs a detection signal to the control chip MCU circuit; and a control signal output from the control chip MCU circuit is input into the control end of the power transistor driving circuit. By the ultralow-power-consumption and high-efficiency electromagnet control circuit, suction of the electromagnet can be started at low voltage; the suction of the electromagnet can be started under a wide voltage range of a battery; moreover, the power consumption is ultralow.

Description

Technical field: [0001] The invention relates to an electromagnet control circuit, in particular to an electromagnet control circuit with ultra-low power consumption and high efficiency. Background technique: [0002] The application of electromagnets has been very extensive, and for a long time, electromagnets work at rated operating voltage and current. This application is the most primitive, has the largest power consumption, and has the lowest efficiency. [0003] There are also new technologies emerging recently, such as patent document: 200810202044, which is about the technology of using pulse width modulation low voltage and small current to maintain the electromagnet after the electromagnet is normally pulled in and out. It works with its unique characteristics, which saves a lot of power consumption and improves the efficiency significantly. Although this technology has made great progress, it is still not the most efficient. There are two main points: first, it c...

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