CN216749863U

CN216749863U - Diode with breakdown-resistant structure

Info

Publication number: CN216749863U
Application number: CN202220250142.3U
Authority: CN
Inventors: 涂长招
Original assignee: Fujian Kangbo Electronic Technology Co ltd
Current assignee: Fujian Kangbo Electronic Technology Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-06-14
Anticipated expiration: 2032-02-07

Abstract

The utility model discloses a diode with a breakdown-resistant structure, which comprises a shell, wherein an insulating shell is fixedly connected to the inner wall of the shell, an anode lead and a cathode lead are respectively connected to two sides of the shell, a metal contact wire is fixedly connected to one end of the anode lead, and an N-type germanium sheet is fixedly connected to one end of the cathode lead. According to the diode with the breakdown-resistant structure, the heat generated by the current passing through the conductor is in direct proportion to the quadratic power of the current according to the Joule law, when the current is too large, the metal contact wire can generate more heat to heat the surrounding environment, so that the carbon dioxide gas in the expansion ball rapidly expands, the expansion ball enables the metal contact on the power transmission line to contact the metal contact wire, then the metal contact wire is conveyed to the resistor to be consumed, the current passing through the metal contact wire is reduced, and the breakdown limit of the diode is increased.

Description

Diode with breakdown-resistant structure

Technical Field

The utility model relates to the field of diodes, in particular to a diode with a breakdown-resistant structure.

Background

A diode, a two-electrode electronic component with asymmetric conductance, ideally a diode has zero resistance between two electrodes (anode and cathode) when conducting in forward direction and infinite resistance when conducting in reverse direction, i.e. current is allowed to flow through the diode from a single direction, therefore the diode has the characteristic of one-way conduction and can perform rectification, the diode has two terminals of anode and cathode, current can flow only in a single direction, i.e. current can flow from anode to cathode but not from cathode to anode, the application of this one-way characteristic of the diode is generally called as "rectification", in a vacuum tube, thermions can be passed from cathode to anode by means of voltage applied between the electrodes, thus having the function of rectification, converting alternating current into pulsating direct current, including modulation of radio signals by a radio receiver, are all accomplished by rectification.

When the existing diode is used, the diode is easy to break down when the diode continuously passes through larger current, so that circuit faults occur, the safety performance of use is reduced, and the diode is not beneficial to long-term use.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a diode with breakdown-resistant structure, which can effectively solve the problems in the background art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a diode with resistant breakdown structure, includes the shell, the inner wall fixedly connected with insulating casing of shell, the both sides of shell are connected with positive pole lead and negative pole lead respectively, the one end fixedly connected with metal contact wire of positive pole lead, the one end fixedly connected with N type germanium piece of negative pole lead.

Preferably, the bottom of the inner wall of the housing is fixedly connected with a support rod, the top end of the support rod is fixedly connected with an expansion ball, the bottom of the inner wall of the housing is fixedly connected with a resistor on one side of the support rod, one side of the resistor is connected with a power transmission line, and one end of the power transmission line is connected with a metal contact.

Preferably, the resistors of the power transmission lines are electrically connected, and the outer walls of the power transmission lines and the outer walls of the expansion balls are fixedly connected.

Preferably, the material of expansion ball is nitrile rubber, the inside of expansion ball is equipped with normal atmospheric temperature carbon dioxide gas.

Preferably, the shell is made of plastic.

Preferably, the insulating shell is made of glass.

Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a diode with resistant breakdown structure, in the use, under the normal work, the electric current passes through the metal touch wire from positive pole lead wire, during N type germanium piece and negative pole lead wire, because the electric current is less, can not produce more heat, according to the joule law, the heat that the electric current produced through the conductor is directly proportional with the square of electric current, when the electric current is too big, the metal touch wire can produce more heat, heat the environment on every side, make the inside carbon dioxide gas of inflation ball expand rapidly, make the metal touch wire of metal touch on the inflation ball with the power transmission line, then carry resistance and consume, and then reduce the electric current through the metal touch wire, increase the breakdown limit of diode.

Drawings

Fig. 1 is a schematic diagram of an overall structure of a diode with a breakdown-withstanding structure according to the present invention.

Fig. 2 is a schematic structural diagram of an expansion ball in a diode with a breakdown-resistant structure according to the present invention.

In the figure: 1. a housing; 2. an insulating case; 3. an anode lead; 4. a cathode lead; 5. a metal contact wire; 6. an N-type germanium sheet; 7. a support bar; 8. an expansion ball; 9. a resistance; 10. a power transmission line; 11. and a metal contact.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-2, a diode with a breakdown-resistant structure includes a housing 1, an insulating housing 2 fixedly connected to an inner wall of the housing 1, an anode lead 3 and a cathode lead 4 respectively connected to two sides of the housing 1, a metal contact wire 5 fixedly connected to one end of the anode lead 3, and an N-type germanium sheet 6 fixedly connected to one end of the cathode lead 4.

Furthermore, the bottom of the inner wall of the housing 1 is fixedly connected with a support rod 7, the top end of the support rod 7 is fixedly connected with an expansion ball 8, the bottom of the inner wall of the housing 1 is fixedly connected with a resistor 9 on one side of the support rod 7, one side of the resistor 9 is connected with a power transmission line 10, and one end of the power transmission line 10 is connected with a metal contact 11.

Furthermore, the resistors 9 of the power transmission line 10 are electrically connected, and the outer wall of the power transmission line 10 is fixedly connected with the outer wall of the expansion ball 8.

Furthermore, the material of expansion ball 8 is nitrile rubber, and normal temperature carbon dioxide gas is equipped with inside expansion ball 8, and expansion ball 8 can expand when the temperature rises.

Furthermore, the material of the housing 1 is plastic.

Furthermore, the insulating shell 2 is made of glass, so that the insulating effect is effectively improved.

It should be noted that, the diode with breakdown-resistant structure of the present invention is used, when in normal operation, when current passes through the metal contact wire 5, the N-type germanium sheet 6 and the cathode lead 4 from the anode lead 3, because the current is small, no more heat is generated, according to joule's law, the heat generated by the current passing through the conductor is proportional to the quadratic of the current, when the current is too large, the metal contact wire 5 generates more heat to heat the surrounding environment, so that the carbon dioxide gas inside the expansion ball 8 expands rapidly, the expansion ball 8 makes the metal contact 11 on the power transmission line 10 contact the metal contact wire 5, and then the metal contact wire is conveyed to the resistor 9 to be consumed, thereby reducing the current passing through the metal contact wire 5, and increasing the breakdown limit of the diode.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A diode having a breakdown-tolerant structure, comprising a housing (1), characterized in that: the inner wall fixedly connected with insulation housing (2) of shell (1), the both sides of shell (1) are connected with positive pole lead wire (3) and negative pole lead wire (4) respectively, the one end fixedly connected with metal touch wire (5) of positive pole lead wire (3), the one end fixedly connected with N type germanium piece (6) of negative pole lead wire (4).

2. A diode having a breakdown-tolerant structure according to claim 1, wherein: the utility model discloses a power transmission cable, including shell (1), inner wall bottom fixedly connected with bracing piece (7) of shell (1), the top fixedly connected with inflation ball (8) of bracing piece (7), the inner wall bottom of shell (1) just is located one side fixedly connected with resistance (9) of bracing piece (7), one side of resistance (9) is connected with power transmission line (10), the one end of power transmission line (10) is connected with metal contact (11).

3. A diode having a breakdown-tolerant structure according to claim 2, wherein: the resistors (9) of the power transmission line (10) are electrically connected, and the outer wall of the power transmission line (10) is fixedly connected with the outer wall of the expansion ball (8).

4. A diode having a breakdown-tolerant structure according to claim 2, wherein: the expansion ball (8) is made of nitrile rubber, and normal-temperature carbon dioxide gas is arranged inside the expansion ball (8).

5. A diode having a breakdown-tolerant structure according to claim 1, wherein: the shell (1) is made of plastic.

6. A diode having a breakdown-tolerant structure according to claim 1, wherein: the insulating shell (2) is made of glass.