CN104252929A

CN104252929A - High-precision copper bush leading-out type glass glaze resistance voltage divider

Info

Publication number: CN104252929A
Application number: CN201310273549.3A
Authority: CN
Inventors: 李志珣
Original assignee: TIANJIN SANHUAN RESISTOR CO Ltd
Current assignee: TIANJIN SANHUAN RESISTOR CO Ltd
Priority date: 2013-06-30
Filing date: 2013-06-30
Publication date: 2014-12-31

Abstract

The invention relates to a high-precision copper bush leading-out type glass glaze resistance voltage divider. The high-precision copper bush leading-out type glass glaze resistance voltage divider comprises a ceramic matrix, a resistance layer, a protection layer and copper bushes, the outer rim of the ceramic matrix is coaxially covered with the resistance layer, the outer rim of the resistance layer is coaxially fixedly provided with the protection layer, two ends of the protection layer are fixedly provided with the copper bushes in a mirror symmetry manner, the copper bushes are connected with the resistance layer, the outer rim of a conducting layer is coaxially fixedly provided with an annular cap, the annular cap is radically leaded with a voltage division leading-out wire, and the voltage division leading-out wire radically penetrates through the protection layer. A present glass glaze fixed resistor is reconstructed through accurate measurement and calculation, the cap is arranged in the assigned area of the conducting layer and the leading-out wire is arranged as the third leading-out end without changing a resistance membrane used by the conducting layer to make the glass glaze fixed resistor become the resistance voltage divider, the voltage division ratio of the resistance voltage divider is 1:2000-20000, and the glass glaze fixed resistor has the characteristics of good moisture resistance and high temperature resistance, so the wide application range of the resistance voltage divider is guaranteed.

Description

A kind of high accuracy copper sheathing extraction glaze resistance voltage divider

Technical field

The invention belongs to field of electronic devices, relate to resitstance voltage divider, especially a kind of high accuracy copper sheathing extraction glaze resistance voltage divider.

Background technology

Resistance divider has three exits, resistance fixed resistive element, in order to reduce production cost or use cost, slide rheostat often uses as voltage divider by manufacturer or user, this gives no cause for much criticism in typical electronic circuitry, and partial pressure value is adjustable, if but be applied in space flight, in the sophisticated electronic circuitry such as navigation, not only volume cannot meet circuit requirement, its precision is far from up to standard, mainly its rated disspation is different from limiting voltage specification, voltage ratio power is little, weatherability is poor, so under the market background of current more and more attention precise electronic original paper, high accuracy, the resistance divider of high partial pressures specific power is absolutely necessary.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of and there is high accuracy copper sheathing extraction glaze resistance voltage divider that is well moisture resistance, thermal endurance.

The object of the invention is to be achieved through the following technical solutions:

A kind of high accuracy copper sheathing extraction glaze resistance voltage divider, comprise ceramic matrix, resistive layer, protective layer and copper sheathing, coaxially resistive layer is covered in ceramic matrix outer rim, coaxially protective layer is fixed with in resistive layer outer rim, at protective layer two ends, specular is fixedly mounted with copper sheathing, resistive layer is closed and is connected with resistive layer by this copper sheathing, two copper sheathings are as first, second exit, an annular cap is coaxially fixedly mounted with in described conductive layer outer rim, this annular cap is positioned at conductive layer total length 1/10 place from left to right and is compressed by protective layer, radial extraction one dividing potential drop lead-out wire is covered at this ring cap, as three terminal, this dividing potential drop lead-out wire radial direction runs through protective layer, two copper sheathing external diameters are 33mm, the diameter of dividing potential drop lead-out wire is 0.8mm, resistive layer length is 400mm.

And the Standard resistance range between described first exit and the second exit is 1 ~ 499M Ω, the Standard resistance range between the first exit and three terminal is 499 Ω ~ 1M Ω.

And described resistive layer is resistive film, adopt ruthenium-oxide glass glaze.

Advantage of the present invention and beneficial effect are:

The present invention is by accurate surveying and calculating, existing glass glaze fixed resistance is transformed, on the basis not changing conductive layer resistive film used, install cap additional in conductive layer appointed area and lead-out wire be installed as three terminal, glass glaze fixed resistance is made to become resistance divider, its voltage ratio reaches 1:2000 ~ 20000, there is good dividing potential drop precision, all applicable to multiple sophisticated electronic circuitry, due to glass glaze fixed resistance self-characteristic, its preferably moisture resistance, heat-resisting quantity ensure that the resitstance voltage divider scope of application widely.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention

Fig. 2 is the left view of Fig. 1;

Fig. 3 be in Fig. 2 A-A to cross-sectional view.

embodiment

Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.

A kind of high accuracy copper sheathing extraction glaze resistance voltage divider; comprise ceramic matrix 5, resistive layer 6, protective layer 3 and copper sheathing 4; coaxially resistive layer is covered in ceramic matrix outer rim; coaxially protective layer is fixed with in resistive layer outer rim; at protective layer two ends, specular is fixedly mounted with copper sheathing, and resistive layer is closed and is connected with resistive layer by this copper sheathing, and two copper sheathings are as first, second exit; in the present embodiment, in figure, left side lead-out wire is the first exit.

Innovative point of the present invention is:

An annular cap 2 is coaxially fixedly mounted with in described conductive layer outer rim; this annular cap is positioned at conductive layer total length 1/10 place from left to right and is compressed by protective layer; radial extraction one dividing potential drop lead-out wire 1 is covered at this ring cap; as three terminal; this dividing potential drop lead-out wire radial direction runs through protective layer; two copper sheathing external diameters are 33mm; the diameter of dividing potential drop lead-out wire is 0.8mm; resistive layer length is 400mm; Standard resistance range between first exit and the second exit is 1 ~ 499M Ω, and the Standard resistance range between the first exit and three terminal is 499 Ω ~ 1M Ω.

The resistive layer that the present invention adopts is resistive film, adopts ruthenium-oxide glass glaze.

After testing, the voltage ratio of the resitstance voltage divider of this resitstance voltage divider is 1:2000 ~ 20000, and at 25 DEG C, the rated disspation between the first exit and the second exit is 100W, and a few line voltage is 120KV.

Claims

1. a high accuracy copper sheathing extraction glaze resistance voltage divider, comprise ceramic matrix, resistive layer, protective layer and copper sheathing, coaxially resistive layer is covered in ceramic matrix outer rim, coaxially protective layer is fixed with in resistive layer outer rim, at protective layer two ends, specular is fixedly mounted with copper sheathing, resistive layer is closed and is connected with resistive layer by this copper sheathing, two copper sheathings are as first, second exit, it is characterized in that: be coaxially fixedly mounted with an annular cap in described conductive layer outer rim, this annular cap is positioned at conductive layer total length 1/10 place from left to right and is compressed by protective layer, radial extraction one dividing potential drop lead-out wire is covered at this ring cap, as three terminal, this dividing potential drop lead-out wire radial direction runs through protective layer, two copper sheathing external diameters are 33mm, the diameter of dividing potential drop lead-out wire is 0.8mm, resistive layer length is 400mm.

2. high accuracy copper sheathing extraction glaze resistance voltage divider according to claim 1, it is characterized in that: the Standard resistance range between described first exit and the second exit is 1 ~ 499M Ω, the Standard resistance range between the first exit and three terminal is 499 Ω ~ 1M Ω.

3. high accuracy copper sheathing extraction glaze resistance voltage divider according to claim 1, is characterized in that: described resistive layer is resistive film, adopts ruthenium-oxide glass glaze.