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Contactor coil power supply circuit

A technology for power supply circuits and contactors, applied in circuits, relays, electrical components, etc., can solve problems such as accidental disconnection of contactors, damage to contacts or coils, etc., to improve stability and solve the effect of large current impact problems

Active Publication Date: 2013-07-10
SUZHOU INOVANCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a contactor coil power supply circuit for the above-mentioned problems of contactor or coil damage caused by unstable grid voltage and contactor disconnection by mistake

Method used

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  • Contactor coil power supply circuit
  • Contactor coil power supply circuit
  • Contactor coil power supply circuit

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0022] Such as figure 1 Shown is a schematic diagram of an embodiment of the contactor coil power supply circuit of the present invention. The contactor coil power supply circuit in this embodiment includes a DC stabilized power supply unit 100, an energy storage unit 200 and a control switch 300, wherein the energy storage unit 200 is connected to the contactor coil 400 via the control switch 300, and the DC stabilized power supply unit 100 is used To provide a stable DC output to power the energy storage unit 200 and the contactor coil 400 . The above-mentioned energy storage unit 200 may speci...

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PUM

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Abstract

The invention provides a contactor coil power supply circuit which comprises a direct current voltage stabilization power supply unit, an energy storage unit and a control switch. The energy storage unit is connected with a contactor coil through the control switch. The direct current voltage stabilization power supply unit comprises a control sub unit, a direct current converter, an output sub unit and a feedback sub unit. The direct current converter is used for achieving direct current voltage conversion. An input end of the output sub unit is connected with an output end of the direct current converter and an output end of the output sub unit is connected with the energy storage unit. The feedback sub unit is used for obtaining feedback voltage and current from the output sub unit. The control sub unit is used for adjusting output voltage of the direct current converter according to the feedback voltage and the current. The contactor coil power supply circuit can improve stability of contactor coil power supply and solve the problem of large current impact when a pull-in phenomenon of a contactor occurs.

Description

technical field [0001] The invention relates to the field of contactors, in particular to a contactor coil power supply circuit. Background technique [0002] A contactor is a breaking and closing device that can frequently close, carry and break normal current and specified overload current. It is suitable for remote control and is an important component in an automatic control system. At present, contactors are widely used in the start and stop of motor control, fan, water pump equipment, etc. When controlling the opening and closing of the contactor, it is generally realized by controlling the power supply circuit of the coil in the contactor: when the coil of the contactor is energized, a strong magnetic field is generated, which makes the pull-in magnet in the contactor act, Drive the contactor to close; when the contactor coil is de-energized, the attracting magnet separates and drives the contactor to break. [0003] Existing contactors generally adopt DC or AC powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/22
Inventor 张荣何飞余伟
Owner SUZHOU INOVANCE TECH CO LTD