CN203386550U

CN203386550U - High-precision copper sleeve lead-out type resistance voltage divider

Info

Publication number: CN203386550U
Application number: CN201320387014.4U
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: 2014-01-08
Anticipated expiration: 2023-06-30

Abstract

The utility model relates to a high-precision copper sleeve lead-out type resistance voltage divider, comprising a ceramic substrate, a resistance layer, a protective layer and copper sleeves, wherein the resistance layer is coaxially covered at the outer edge of the ceramic substrate; the protective layer is coaxially and fixedly mounted at the outer edge of the resistance layer; the copper sleeves are fixedly mounted at the two ends of the protective layer in a mirror symmetry manner and are connected with the resistance layer; an annular cap is coaxially and fixedly mounted at the outer edge of a conducting layer; a voltage-dividing lead-out line is guided out from the annular cap; the voltage-dividing lead-out line runs through the protective layer radially. The existing glass glaze fixed resistor is transformed through accurate measurement and calculation, and the cap and the lead-out line serving as the third lead-out end are mounted in the appointed region of the conducting layer on the basis of not changing a resistive film which is used by a conducting layer, so that the glass glaze fixed resistor is changed into a resistance type voltage divider and the voltage division ratio reaches to 1:(2000-20000); the glass glaze fixed resistor has excellent moisture resistance and high temperature resistance, so wide application range of the resistance voltage divider is guaranteed.

Description

A kind of high accuracy copper sheathing extraction resitstance voltage divider

Technical field

The utility model belongs to field of electronic devices, relates to resitstance voltage divider, especially a kind of high accuracy copper sheathing extraction resitstance voltage divider.

Background technology

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

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of well moisture resistance, stable on heating high accuracy copper sheathing extraction resitstance voltage divider that has is provided.

The purpose of this utility model is achieved through the following technical solutions:

A kind of high accuracy copper sheathing extraction glass glaze resitstance voltage divider, comprise ceramic matrix, resistive layer, protective layer and copper sheathing, coaxially cover resistive layer in the ceramic matrix outer rim, coaxially be fixed with protective layer in the resistive layer outer rim, at the protective layer two ends, the mirror image symmetry is fixedly mounted with copper sheathing, this copper sheathing seals resistive layer and be connected with resistive layer, two copper sheathings are as first, the second exit, coaxially be fixedly mounted with an annular cap in described conductive layer outer rim, this annular cap is positioned at total length 1/10 place from left to right of conductive layer and is compressed by protective layer, cover and radially draw a dividing potential drop lead-out wire at this ring cap, as three terminal, this dividing potential drop lead-out wire radially 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 the 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 the ruthenium-oxide glass glaze.

Advantage of the present utility model and beneficial effect are:

The utility model is by accurately measuring and calculating, existing glass glaze fixed resistance is transformed, on the basis that does not change conductive layer resistive film used, installed cap additional and lead-out wire has been installed as three terminal in the conductive layer appointed area, make the glass glaze fixed resistance become resistance divider, its voltage ratio has reached 1:2000～20000, there is good dividing potential drop precision, all applicable to multiple precise electronic circuit, due to glass glaze fixed resistance self-characteristic, its preferably moisture resistance, heat-resisting quantity guaranteed the resitstance voltage divider scope of application widely.

The accompanying drawing explanation

Fig. 1 is structural representation of the present utility model

The left view that Fig. 2 is Fig. 1;

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

Embodiment

Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection range of the present utility model with this.

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

Innovative point of the present utility model is:

Coaxially be fixedly mounted with an annular cap 2 in described conductive layer outer rim; this annular cap is positioned at total length 1/10 place from left to right of conductive layer and is compressed by protective layer; cover and radially draw a dividing potential drop lead-out wire 1 at this ring cap; as three terminal; this dividing potential drop lead-out wire radially 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 the 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 utility model adopts is resistive film, adopts the ruthenium-oxide glass glaze.

After testing, the voltage ratio of the resitstance voltage divider of this resitstance voltage divider is that under 1:2000～20000,25 ℃, 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 resitstance voltage divider, comprise ceramic matrix, resistive layer, protective layer and copper sheathing, coaxially cover resistive layer in the ceramic matrix outer rim, coaxially be fixed with protective layer in the resistive layer outer rim, at the protective layer two ends, the mirror image symmetry is fixedly mounted with copper sheathing, this copper sheathing seals resistive layer and be connected with resistive layer, two copper sheathings are as first, the second exit, it is characterized in that: in described conductive layer outer rim, coaxially be fixedly mounted with an annular cap, this annular cap is positioned at total length 1/10 place from left to right of conductive layer and is compressed by protective layer, cover and radially draw a dividing potential drop lead-out wire at this ring cap, as three terminal, this dividing potential drop lead-out wire radially 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 resitstance voltage divider according to claim 1, it is characterized in that: the Standard resistance range between described the 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.

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