Driving circuit for controllable switches
A technology for driving circuits and switching circuits, which is applied to sequence/logic controller program control, electrical program control, conversion equipment without intermediate conversion to AC, etc., and can solve problems such as long operation time of controllable switches
Active Publication Date: 2015-07-29
维谛新能源有限公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] The embodiment of the present invention provides a drive circuit for a controllable switch, which is used to solve the problem that the current voltage-driven controllable switch has a relatively long action time
Method used
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Embodiment Construction
[0028] The embodiment of the present invention provides a drive circuit for a controllable switch. When the driven controllable switch needs to be turned off, the switch circuit makes a DC power supply pass through the two input terminals of the energy storage circuit for the storage The energy circuit is charged; and when the driven controllable switch needs to be closed, the DC power supply is connected in series with the energy storage circuit, and the voltage signal output by the circuit formed after the DC power supply and the energy storage circuit is connected in series is the driving signal of the driven controllable switch ; Since the DC power supply is connected in series with the energy storage circuit, the output terminal with higher voltage among the two output terminals of the DC power supply is connected to the output terminal with lower voltage among the two output terminals of the energy storage circuit, or, the two output terminals of the DC power supply The o...
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An embodiment of the invention provides a driving circuit for controllable switches to solve the problem that the action time of an existing voltage-driven controllable switch is long. The circuit comprises a switching circuit and an energy storage circuit. The switching circuit is used for making a direct-current power supply flow through two input ends of the energy storage circuit to charge the energy storage circuit when a driven controllable switch needs to be switched off, and connecting the direct-current power supply in series with the energy storage circuit when the driven controllable switch needs to be switched on, wherein a voltage signal output by a circuit formed after the direct-current power supply and the energy storage circuit are connected in series is a driving signal of the driven controllable switch. When the direct-current power supply and the energy storage circuit are connected in series, a higher-voltage output end among two output ends of the direct-current power supply is connected with a lower-voltage output end among two output ends of the energy storage circuit, or a lower-voltage output end among the two output ends of the direct-current power supply is connected with a higher-voltage output end among the two output ends of the energy storage circuit.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a drive circuit for a controllable switch. Background technique [0002] In some special occasions in the field of industrial control, there are extremely strict requirements on the action time of the controllable switch. If the action time is too long, it will affect the overall operation of the equipment. The action time of the controllable switch refers to the time period between the moment when the controllable switch receives a closed driving signal and the moment when the controllable switch is physically closed. [0003] At present, voltage-driven controllable switches, such as relays and contactors, are directly driven by the voltage signal output by the DC power supply. Although the output voltage of the DC power supply can drive the controllable switch to close, when the output voltage of the DC power supply When the value is low, the controllable switching d...
Claims
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Login to View More IPC IPC(8): G05B19/04H02M3/07
CPCG05B19/04
Inventor 吴华勇赵敬辉
Owner 维谛新能源有限公司