CN1057923A

CN1057923A - Novel capacitor

Info

Publication number: CN1057923A
Application number: CN 90103409
Authority: CN
Inventors: 陶松垒; 夏成山
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-07-01
Filing date: 1990-07-01
Publication date: 1992-01-15

Abstract

A novel capacitor relates to the manufacture of capacitors. The purpose is to integrate the conductor and the medium into a whole to manufacture a capacitor with small volume, large capacitance and high voltage resistance. It is made up by using conductor coated with insulating film, insulator coated with metal film or using the repeated coating method of metal film insulating film to make capacitor. A capacitor is manufactured by using a coated film as a unit. A thermosensitive capacitor and a pressure-sensitive capacitor whose capacitance varies with the temperature and pressure. The method has the characteristics of high work efficiency, low defective rate, stable and reliable performance and the like.

Description

Novel capacitor

The present invention relates to the manufacturing of capacitor.

Capacitor is by two mutual insulatings and have the device that the conductor system of certain electric capacity is formed.Capacitance between two conductors changes with conductor size and distance to each other, and conductor size is big more, and mutual distance is few more, then the capacitance between conductor is also big more, also relevant with the character of the medium of filling out therebetween simultaneously, the dielectric constant of this medium is big more, and then electric capacity is just big more.

Any electronics all are the circuit that alternating current-direct current mixes, and capacitor mainly is that alternating current is partly brought into play its function in electronics.The AC portion of electronics, because frequency relation, the key that makes the capacitor manufacturing is to select the suitable insulation medium for use.Capacitor is made selected dielectric and is made every effort to that its volume is few, capacity is high, internal resistance is big, frequency loss is few, even tissue is hard close.

And existing capacitor, defective such as air capacitor, paper capacitor, mica condenser, titanium porcelain capacitor, vacuum capacitor exist all that volume is big, capacity is little, the defect rate high-capacitance in making can not change with the need.

The present invention is exactly according to above-mentioned principle and requirement, and the defective at existing adopts new method, and several novel capacitor that produces.The dielectric capacitor of filming also claims to film electric capacity, is intended to make parallel-plate and dielectric to be integrated.Temperature-sensitive electric capacity, the pressure-sensitive capacitance of Pai Shenging is intended to change capacitance with the variation of temperature, pressure thus.

The basic thought of described film capacitor is: on conductor, coat insulation film, or the capacitor that the coated with metal film produces on insulator.

Its architectural feature is: (one) is coated with last layer on a metallic plate (1) or two layers of evenly hard close insulation film (2) make it become the unit of making capacitor.As shown in Figure 1.This insulation film also can be produced by the oxidation of metallic plate itself.(2) on an insulation board (3), be coated with last layer or two layers of metallic film (4), as shown in Figure 2, make it become the unit of making capacitor.(3) metal film (5) is coated with folding repeatedly of dielectric film (6), draws leg (7) on the coating of its metal film, as shown in Figure 3, makes it become the unit of making capacitor.

Capacitor by the inventive method is made has the saving cost, improves work efficiency, reduces substandard products, reduces volume, increase capacity, every steady performance.

Embodiment one: at mylar two sides coated with metal film, on the metal film on two sides, be coated with the last layer dielectric film again, make the distance between two metal films little and stable, no air gap and firm reliable between metal film and dielectric film, the condenser capacity of making like this is big, volume is few, withstand voltage height, good stability, error are little.

Embodiment two: CYM series preset variable capacitor, as shown in Figure 4, by stator (9) moving plate (11) of filming, axle (13), pedestal (10), insulation minipad (12), weld tabs (14), fastening pad (16), spring leaf (15), case compositions such as (8).The CYM of thin film dielectrics in the past series preset variable capacitor has easy short circuit in manufacture process, volume film, defect rate height, problem such as low capacity is many.Employing is filmed after the thought, has used the moving plate of filming (11) instead, has replaced original copper minipad with insulation minipad (12), change for these 2, not only saved the thin film of tetrafluoro second, and saved more than 1/3rd than the manufacturing and the installation time of former capacitor, capacitance improves, substantially eliminated short circuit phenomenon and low capacity phenomenon, guaranteed quality on technology, defect rate reduces greatly, all other test indexs, as: loss tangent, insulation resistance, proof voltage, rotor contact resistance, rotating torque, thrust, exit intensity, solderability, high low temperature, constant damp and hot, mechanical endurance etc. all reach and surpass ministry standard.

Described temperature-sensitive capacitor and compression capacitor are made according to C=(ε S)/(4 π d) formula.When area S was constant, when distance d was tending towards dimensionless, capacitor C just tended to infinitely large quantity, and when distance d increased, capacitor C just reduced.

Temperature-sensitive capacitor basic thought is that the material of employing thermal deformation is a medium, or drive the moving plate of filming with heat deformable material, so that during variations in temperature, moving plate can move on the relevant position of stator and change capacitance, its architectural feature is: establish a moving plate between two stators or on the relative position of a stator, moving plate connects the capacitor of thermal deformation device, a kind of can varying with temperature and make the thermal change type mechanism of moving plate displacement.Schematic diagram is shown in figure (5), comprise the moving plate of filming (17), stator (18), thermal change mechanism (19), thermal sensitive piece formations such as (20), when temperature raise, to the A end, the capacitance between AB increased the feeler elongation of thermal change mechanism the moving plate top, capacitance between BC reduces, when temperature descended, thermal change mechanism feeler shortened, and moving plate is shifted to the C end, capacitance between AB reduces the capacitance increase between BC at this moment, thereby realizes changing with variation of temperature the purpose of capacitance.Can make the temperature-sensitive capacitor of the larger capacity of multilayer synchronization action, can make also that heat increases type, heat subtracts all kinds of temperature-sensitive capacitors such as type, drastic change type, gradation type according to the needs of circuit, all need be signal with the variations in temperature to be applicable to temperature-compensating, temperature control, adjustment etc., change the occasion of capacitance.

The basic thought of pressure-sensitive capacitance is: employing pressure is signal, makes the mobile change capacitance of capacitance sheet on the relevant position of filming.Its architectural feature is: one group or several groups film capacitance sheet and pressure distortion mechanism link, pressure distortion mechanism is out of shape with pressure, drive is filmed, and capacitance sheet is corresponding to be moved, its schematic diagram as shown in Figure 6, it comprises: pressure-sensitive mouth (21), elastic membrane (22), pellicula (23) etc.By the effect of elastic membrane (22), make the distance between FG big under normal pressure, capacitance is less, the distance between DE seldom, capacitance reaches maximum; When pressure raise, distance reduced between FG, and capacitance increases, and distance increases between DE, and capacitance reduces.Thereby realize changing the purpose that changes capacitance with pressure, can make the pressure-sensitive capacitance of the larger capacity of sandwich construction synchronization action as required, also can make the malleation increase and decrease, all kinds of compression capacitors such as negative pressure increase and decrease are applicable to that all need be changed to the occasion of signal change capacitance with pressure.

Claims

1, a kind of novel capacitor, a kind of new method of making capacitor is characterized in that:

A, film capacitor, the i.e. capacitor made from coated insulating film or metal film.

B, temperature-sensitive capacitor, promptly capacitance varies with temperature and the capacitor that changes.

C, compression capacitor, promptly capacitance is with the capacitor of change in pressure.

2, as claim 1 described film capacitor, it is characterized in that: coated insulating film on a kind of conductor, matel coated film on the insulator, or be the capacitor that the unit is made with the folded repeatedly part that is coated with of metal film dielectric film.

3, as claim 1 described temperature-sensitive capacitor, it is characterized in that: a kind ofly establishing the moving plate of filming between two stators or on the relative position of a stator, moving plate connects the capacitor of thermal deformation mechanism.A kind of can varying with temperature and make the thermal deformation mechanism of moving plate displacement.

4, as claim 1 described compression capacitor, it is characterized in that: one group or several groups of pelliculas, connect a pressure distortion mechanism, a kind of variation with pressure drives the pressure distortion mechanism that pellicula relatively moves.