JPS5834751Y2 - surge absorber - Google Patents

Description

[Detailed description of the invention] This invention can absorb everything from low-level noise to high voltage surges, and is particularly effective in eliminating sparks from contacts, etc.
The present invention provides a surge absorber that has the same size and external dimensions as conventional surge absorbers.

Conventionally, non-linear resistance elements of various types and shapes have been used as surge absorbers to protect electrical or electronic equipment or to eliminate sparks in relays, etc. However, it is not effective for things below the operating voltage, and capacitors are generally used to prevent noise in equipment such as radios and televisions.

In the case of a single capacitor, against large abnormal voltages,
Due to problems such as withstand voltage, it is common to use a nonlinear resistance element and a capacitor connected in parallel.

This method is also used to eliminate sparks,
As a surge absorber, it has the disadvantage of being large in size.

Therefore, the present invention aims to provide a surge absorber that can absorb everything from low-level noise to high-voltage surges and has good external dimensions.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a surge absorber according to an embodiment of the present invention, 1 is a zinc oxide varistor, 2 and 2' are electrode parts provided on the end faces thereof, 3 is a chip-shaped capacitor, 4 and 4 are
' indicates an electrode portion provided on the end surface.

5 is a lead wire that connects the electrode parts 2 and 4 and projects to the outside; 5' is a lead wire that connects the electrode parts 2' and 4' and projects to the outside.

As can be understood from FIG. 1, the electrode parts 2.2' and 4.4' of the zinc oxide varistor 1 and the capacitor 3 are
, 5' are arranged in two rows for easy connection.

Reference numeral 6 indicates a resin for firmly connecting the zinc oxide varistor 1 and the capacitor 3 mechanically and electrically insulating them.

FIG. 2 shows a front view. Figure 3 is an external view of a surge absorber whose exterior has been painted to maintain weather resistance.
7 indicates the exterior part.

FIG. 6 is an equivalent circuit diagram of the surge absorber of the present invention.

Although a zinc oxide varistor was used in the above embodiment, any voltage-dependent nonlinear resistance element may generally be used.

As described above, in the surge absorber according to the present invention, the voltage-dependent nonlinear resistance element exhibits a suppressing effect against high voltage surges, and limits the voltage to a constant voltage.

In addition, a capacitor acts as a preventer against relatively low-level radio noise, etc., and this capacitor may have a low withstand voltage.

Furthermore, the combined action of the voltage-dependent nonlinear resistance element and the capacitor ensures that the spark at the contact point is extinguished more reliably.

In this way, it is possible to provide a small-sized surge absorber that operates effectively against surges in a wide range.

[Brief explanation of drawings]

Fig. 1 is a plan view of a surge absorber according to an embodiment of the present invention, Fig. 2 is a front view of the surge absorber, Fig. 3 is a plan view of the surge absorber after external painting, and Fig. 4 is the same. FIG. 2 is a circuit diagram showing an electrical equivalent circuit of a surge absorber. 1...Zinc oxide varistor, 3...Capacitor, 2゜2', 4.4'...Electrode part, 5.5
'...Lead wire, 6...Resin.

Claims (1)

[Scope of utility model registration request] A capacitor that has electrodes on both end faces, and a voltage-dependent nonlinear resistance element that has the same shape as this capacitor and has electrodes on both end faces are arranged in a plane so that the electrode parts are aligned, and the lead wires are aligned. The capacitor and the voltage-dependent non-linear resistance element are connected firmly electrically and mechanically to the electrodes at both ends of the surge surge generator, and the lead wires serve as two external terminals. absorber.