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A contactor, a contactor assembly and a control circuit

A control circuit and contactor technology, applied in contactor components and control circuits, control circuits that change with changes, and contactors, can solve the problems of being easily interfered by magnetic lines of force, contactor costs and product maintenance costs, and avoid Effects of electromagnetic interference, extending physical limitations, freeing up limited space

Inactive Publication Date: 2018-05-15
TYCO ELECTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods are simple for customers to use, the cost of contactors and product maintenance costs are relatively high, and the magnetic Hall switch is also susceptible to interference from magnetic lines of force when the relay or contactor conducts a large current, which cannot meet the requirements of contactor control. need

Method used

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  • A contactor, a contactor assembly and a control circuit
  • A contactor, a contactor assembly and a control circuit
  • A contactor, a contactor assembly and a control circuit

Examples

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Embodiment Construction

[0041] Reference will now be made to specific embodiments, examples of which are illustrated in the accompanying drawings. In the detailed description of particular embodiments, directional terms such as "top", "bottom", "above", "below", "left", "right", etc. are used with reference to the directions described in the drawings. Since components of embodiments of the present invention may be arranged in many different orientations, directional terms are used for purposes of illustration and are by no means limiting. Wherever possible, the same or similar numbers and symbols will be used throughout the drawings to refer to the same or like parts.

[0042] figure 1 It is a schematic diagram of the circuit structure of the contactor 20 in the first embodiment of the present invention.

[0043] Such as figure 1 As shown, the contactor (or relay) 20 includes a control circuit 10 connected to the contactor 20 . The contactor 20 has a contactor housing 21 (see Figure 3A-3B ), th...

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PUM

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Abstract

The invention discloses a contactor, a contactor assembly and a control circuit. The contactor includes a switch mechanism, an iron core and an iron core position measurement circuit. The iron core position measurement circuit includes: an excitation signal generation circuit and a sensing circuit. The sensing circuit is based on Different inductance values ​​are used to judge the position of the iron core; the control circuit is used to control the operation of the contactor. The contactor includes a switch mechanism and an iron core. There are coils around the iron core to drive the iron core to move back and forth, so as to connect the working circuit On or off, the control circuit includes work control circuit, iron core position measurement circuit, controller, etc. The control circuit of the present invention utilizes the characteristic that different positions of the iron core in the coil will cause the coil to produce different inductance, and measures the position of the iron core by measuring the variation of the inductance.

Description

technical field [0001] The present invention relates to contactors, contactor assemblies and control circuits, and more particularly to contactors and control circuits for sensing changes in coil inductance in contactors as a function of core position. Background technique [0002] Contactors or relays are usually used to switch or control working circuits. For example, the contactor is provided with a coil and dynamic and static contacts. When current passes through the coil of the contactor, a magnetic field can be generated to close the dynamic and static contacts to control the electrical appliances of the load. [0003] Due to frequent switching on and off, the current conduction contacts of high-voltage and high-current contactors or relays will cause welding adhesion due to reasons such as overcurrent, high-temperature arc damage, or long-term application aging, so that the moving contacts of contactors or relays Ineffective out of control. For low voltage relays o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H47/02
Inventor 周啸
Owner TYCO ELECTRONICS (SHANGHAI) CO LTD