JPS59727Y2 - Voltage dependent nonlinear resistor - Google Patents

Description

[Detailed description of the invention] The present invention relates to a voltage-dependent nonlinear resistor that is widely used in surge absorbers for inductive loads, voltage stabilization circuits, etc. The present invention aims to provide a voltage-dependent nonlinear resistor that can adjust the voltage.

Conventionally used voltage-dependent non-linear resistors, such as zinc oxide varistors, are typically capable of obtaining only one fixed varistor voltage.

Therefore, when using the varistor as a reference voltage source in a voltage stabilizing circuit or the like, it is necessary to replace the varistor every time the reference voltage is changed.

Also, other circuitry is required for fine adjustment.

When used as a surge absorber for an inductive load, the varistor voltage cannot be adjusted, so the optimum varistor voltage is not necessarily used in many cases.

Therefore, the present invention aims to provide a voltage-dependent nonlinear resistor that can adjust the varistor voltage, and one embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of a voltage-dependent nonlinear resistor according to an embodiment of the present invention, and 1 is a metal cap having a protrusion 2 so that it can serve as an electrical terminal.

3 shows a pin made by bonding a metal plate and a resin plate.

4 is a ceramic cylinder. FIG. 2 is a left side view of FIG. 1, showing that the ceramic tube is cylindrical.

Figure 3 is a sectional view of Figure 1, and Figure 4 is a plan view of Figure 1.
6 indicates a zinc oxide varistor element, and 6 indicates a metal spacer.

Reference numeral 7 indicates a coil spring for press-welding the zinc oxide varistor element 5 and the metal spacer 6 and for electrically connecting it to the metal cap 1.

Reference numeral 8 denotes a plurality of holes provided in the ceramic cylinder 4, and the pin 3 is inserted through any one of the plurality of holes 8 into a joint between an arbitrary element 5 and a metal spacer 6.

5 is a front view of the pin 3, FIG. 6 is a side view, 9 is a metal plate, and 10 is a resin plate, which are made by bonding the metal plate 9 and the resin plate 10.

Note that the tip 11 of the resin plate 10 is cut at an angle to facilitate insertion.

FIG. 7 is a front view of the metal spacer 6, and FIG. 8 is a side view.

12 and 13 are protrusions for contacting the element 5, and 14 is an inclined notch provided to facilitate insertion of the pin 3.

FIG. 9 is an equivalent circuit diagram of this voltage-dependent nonlinear resistor.

As described above, the voltage-dependent nonlinear resistor according to the present invention has a structure in which elements having individual varistor voltages are connected in series, and pins come out from arbitrary connection points. Any varistor voltage can be set by plugging it into the location.

In other words, the varistor voltage can be adjusted.

As described above, the voltage-dependent nonlinear resistor according to the present invention is compact and allows the varistor voltage to be easily adjusted.

[Brief explanation of the drawing]

FIG. 1 is a front view of a voltage-dependent nonlinear resistor according to an embodiment of the present invention, FIG. 2 is a left side view of the resistor, FIG. 3 is a cross-sectional front view, FIG. 4 is a plan view, and FIG. A plan view of some parts of the resistor, Fig. 6 is a right side view of the same, Fig. 7 is a plan view of a metal spacer used in the resistor, Fig. 8 is a right side view of the same, and Fig. 9 is a plan view of the same. FIG. 2 is a circuit diagram showing an electrical equivalent circuit of a resistor. 1... Metal cap, 2... Protrusion, 3... Pin, 4... Tube, 5...
...Zinc oxide varistor, 6...Metal spacer,
7... Coil spring, 8... Hole.

Claims (1)

[Scope of utility model registration request] A plurality of voltage-dependent non-linear resistance elements and metal spaces are alternately stacked and inserted into a cylinder made of an insulating material such as ceramic that is open at one end, and the stack is connected by a spring. energizing the voltage-dependent linear resistance element and the metal spacer, sealing the opening of the cylinder with a metal cap, and providing a plurality of holes in the side of the cylinder;
A voltage-dependent non-linear resistor in which a plate-shaped pin made of a metal and an insulator bonded together is inserted between the metal spacer and the voltage-dependent non-linear resistance element through this hole.