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A thermistor device

A thermistor and external electrode technology, applied in the direction of resistance terminals/electrodes, resistors with positive temperature coefficients, resistors with negative temperature coefficients, etc., can solve the problems of the circuit board 610 of the laminated chip device 600 falling off, etc., To achieve the effect of inhibiting leakage phenomenon and inhibiting shedding

Inactive Publication Date: 2013-02-13
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, since the laminated chip device 600 disclosed in Patent Document 1 is not in contact with the circuit board 610, it is only supported by the metal terminals 612a and 612b.
Therefore, when vibration or the like is applied, there is a possibility that the laminated chip device 600 may come off from the circuit board 610.

Method used

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  • A thermistor device
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Embodiment Construction

[0058] Next, a thermistor device according to one embodiment of the present invention will be described with reference to the drawings.

[0059] (Structure of thermistor device)

[0060] First, the circuit configuration of a motor starting circuit including a thermistor device will be described. figure 1 is an equivalent circuit diagram of the motor starting circuit 1 including the thermistor device 10 .

[0061] The motor starting circuit 1 is a circuit for starting a motor used in a compressor of a refrigerator, and includes a thermistor device 10 , a motor 12 , an AC power source 14 , a switch 16 and a capacitor 18 . In addition, the motor 12 includes a main coil 12a and an auxiliary coil 12b. In addition, the thermistor device 10 includes thermistors 20, 22; a triac 24, and external terminals 26a, 28a, 28b.

[0062] The main coil 12a is connected between the AC power source 14 and the external terminal 28a. The auxiliary coil 12b is connected between the AC power supp...

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PUM

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Abstract

The invention provides a thermistor device which is capable of restricting electric leakage between external electrodes and which is capable of preventing a thermistor from dropping from the main body. The thermistor device comprises a thermistor (22), a supporting portion (76), and terminal electrodes (T2) and (T4). The thermistor (22) comprises a thermistor basic body (60) and external electrodes (62a) and (62b). The thermistor basic body (60) is equipped with mutually opposite end faces. The external electrodes (62a) and (62b) are disposed on two end faces of the thermistor basic body (60). The terminal electrodes (T2) and (T4) are pressed on the external electrodes (62a) and (62b), respectively. The supporting portion (76) contacts a side face connecting the end faces.

Description

technical field [0001] The present invention relates to a thermistor device, and more particularly, to a thermistor device incorporating a thermistor. Background technique [0002] As a conventional method of mounting a thermistor, for example, a surface mounting method of mounting on a circuit board using solder is known. Figure 13 It is a figure which shows the form which surface-mounted the thermistor on the circuit board. [0003] The thermistor 500 includes a thermistor base 502 and external electrodes 504a, 504b. The thermistor base 502 is formed in a rectangular parallelepiped shape. The external electrodes 504a, 504b are respectively provided on the end faces of the thermistor base body 502 . The external electrodes 504a, 504b are connected to land electrodes (not shown) of the circuit board 510 by solders 506a, 506b, respectively. [0004] However, if the thermistor device including the thermistor 500 is used, for example, in a circuit for starting a motor of a ...

Claims

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Application Information

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IPC IPC(8): H01C1/14H01C7/02H01C7/04
Inventor 藤井佑贵
Owner MURATA MFG CO LTD