CN210111963U

CN210111963U - Single-pole multi-throw passive electronic switch

Info

Publication number: CN210111963U
Application number: CN201921084915.XU
Authority: CN
Inventors: 张宇; 傅小叶; 张荣荣; 刘兵超; 李金蓉; 舒涛; 吴小松; 刘兴
Original assignee: Guizhou Aerospace Institute of Measuring and Testing Technology
Current assignee: Guizhou Aerospace Institute of Measuring and Testing Technology
Priority date: 2019-07-11
Filing date: 2019-07-11
Publication date: 2020-02-21
Anticipated expiration: 2029-07-11

Abstract

The present disclosure relates to a single-pole, multi-throw passive electronic switch, comprising: the triode is fixed on a metal plate, so that the triode shell is in close contact with the metal plate, one pole of the triode is connected with one end of at least one current-limiting resistor, the other end of the current-limiting resistor is connected with a mechanical switch, and the other two poles of the triode are connected with a power supply and an electric appliance. The utility model discloses simple structure, switching noise when can effectively reducing the switching action compares with traditional mechanical switch, has the operation aspect, passive, portable and the minimum advantage of switching noise, can all play important role in product design stage and electromagnetic compatibility test stage.

Description

Single-pole multi-throw passive electronic switch

Technical Field

The utility model relates to a single-pole multi-throw's passive electronic switch.

Background

Since birth, the conventional mechanical switch is widely used in various circuits. The mechanical switch has the advantages of low cost, convenient production, simple structure and the like, and is beneficial to wide application. However, in some precise circuit configurations, the use of mechanical switches may create unexpected situations that may cause interference with the circuit or some of the components in the circuit. In order to quantitatively measure such interference, CE107 items are provided in both of the GJB151A and the GJB151B to measure and evaluate interference caused when a product is opened or closed.

Many of the CE107 items of products that use conventional mechanical switches fail, so that the electromagnetic compatibility test of the entire product is stuck to the CE107 item.

The CE102 of another product is affected, and the CE102 is an effect that the device has on the power line when the device is operating, and is to measure the amount of interference caused by the device when the device is operating, and the switch is already closed when the device is operating, so that the noise generated by the switch is generally not measured. However, some products are also turned on and off when the switch is needed during normal operation, such as some solenoid valves. Some products are self-contained single-pole double-throw switches or single-pole multi-throw switches, and the switches are required to be switched every few seconds when the products normally work, such as certain electric mechanisms like wiper motors.

For these products, the interference generated by the switching action is also detected by the receiver when the CE102 is detected, and the interference is many times larger than that in the steady operation, so that the CE102 can always pass through the steady operation, and once the switch is switched during the operation, the CE102 cannot pass through. But the test state of the product itself requires the switch to be switched during the operation, so the CE102 of the product cannot pass through.

As described above, the above products have a problem of excessive switching noise, and there is a need for a switch with very low switching noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a single-pole multi-throw's passive electronic switch is provided, its simple structure, the too big problem of switching noise who produces when solving traditional mechanical switch break-make.

In order to solve the technical problem, the utility model discloses a technical scheme is: a single-pole, multi-throw, passive electronic switch for cascading between a power source and a consumer, said electronic switch comprising: the triode is fixed on a metal plate, so that the triode shell is in close contact with the metal plate, one pole of the triode is connected with one end of at least one current-limiting resistor, the other end of the current-limiting resistor is connected with a mechanical switch, and the other two poles of the triode are connected with a power supply and an electric appliance.

Compared with the prior art, the utility model discloses following profitable technological effect has:

simple structure includes: at least one triode, the triode is fixed on a metal sheet, makes triode casing and this metal sheet in close contact with, the one end of an at least current-limiting resistor is connected to one utmost point of triode, a mechanical switch is connected to the other end of current-limiting resistor, other two poles of the triode are connected the power and are used electrical apparatus, switching noise when can effectively reduce the switching action, compare with traditional mechanical switch, have the operation aspect, passive, portable and the very little advantage of switching noise, can all play important role in product design stage and electromagnetic compatibility test stage.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of a single pole, multiple throw passive electronic switch of the present invention;

fig. 2 is a schematic diagram of a second embodiment of a single-pole, multi-throw passive electronic switch of the present invention;

FIG. 3 is a schematic diagram of a single-pole multiple-throw configuration of the present invention;

fig. 4 is a schematic diagram of a third embodiment of a single-pole, multi-throw passive electronic switch of the present invention;

fig. 5 is a schematic diagram of a fourth embodiment of a single-pole, multi-throw passive electronic switch of the present invention;

fig. 6 is a schematic diagram of a fifth embodiment of the single-pole, multi-throw passive electronic switch of the present invention.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments, but these examples are only illustrative and do not limit the scope of the present invention.

Referring to fig. 1 to 3, the single-pole multi-throw passive electronic switch of the present invention is serially connected between a power supply and an electrical appliance, and the electronic switch includes: the triode 12 is fixed on a metal plate 11, so that the shell of the triode 12 is in close contact with the metal plate 11, one pole of the triode 12 is connected with one end of at least one current-limiting resistor, the other end of the current-limiting resistor is connected with a mechanical switch, and the other two poles of the triode 12 are connected with a power supply and an electric appliance.

Preferably, the number of the triode is one, and the mechanical switch is a single-pole single-throw switch.

Preferably, the base of the triode is connected with one end of the current-limiting resistor.

Preferably, the emitting electrode of the triode is connected with a power supply, and the collecting electrode of the triode is connected with an electrical appliance.

Preferably, the collector of the triode is connected with a power supply, and the emitter of the triode is connected with an electrical appliance.

Preferably, referring to fig. 4, a capacitor is bridged across the single-pole single-throw switch.

Preferably, as shown in fig. 5, the transistor includes: the mechanical switch is a single-pole multi-throw switch.

Preferably, the current-limiting resistor includes a first current-limiting resistor and a second current-limiting resistor, one pole of the first triode is connected to one end of the first current-limiting resistor, the other end of the first current-limiting resistor is connected to the single-pole multi-throw switch, one pole of the second triode is connected to one end of the second current-limiting resistor, the other end of the second current-limiting resistor is connected to the single-pole multi-throw switch, and the first triode and the other two poles of the second triode are connected to a power supply and an electrical appliance.

Preferably, the base of the first triode is connected with one end of a first current-limiting resistor, and the base of the second triode is connected with one end of a second current-limiting resistor.

Preferably, referring to fig. 6, two ends of the single-pole multi-throw switch are respectively bridged with a capacitor.

In one embodiment, the electronic switch includes a transistor(s), a grounded metal plate, a mounting housing, a mechanical switch (single or multiple throw), a decoupling capacitor, and a discharge resistor. The electronic switch can greatly eliminate the switching noise by utilizing the combination of the devices, and compared with the traditional mechanical switch, the electronic switch has the advantages of passive operation, portability and extremely low switching noise.

In one embodiment, switching noise is suppressed using the on-off function of a transistor, and switching noise is suppressed by connecting a current limiting resistor in series with the stage B of the transistor.

In one embodiment, the transistor is mounted on a solid metal plate, so that the transistor housing and the metal plate are in close contact and are well grounded.

In one embodiment, bridging a capacitor across the conventional switch further reduces switching noise during switching.

The utility model discloses a following profitable technological effect:

Although the preferred embodiments of the present invention have been disclosed above, the present invention is not limited thereto. It is obvious that not all embodiments need be, nor cannot be exhaustive here. Any person skilled in the art can change and modify the research scheme of the present invention by adopting the design and content of the above disclosed embodiments without departing from the spirit and scope of the present invention, and therefore, any simple modification, parameter change and modification of the above embodiments by the research entity of the present invention all belong to the protection scope of the scheme of the present invention.

Claims

1. A single-pole, multi-throw, passive electronic switch for cascading between a power source and a consumer, said electronic switch comprising: the triode is fixed on a metal plate, so that the triode shell is in close contact with the metal plate, one pole of the triode is connected with one end of at least one current-limiting resistor, the other end of the current-limiting resistor is connected with a mechanical switch, and the other two poles of the triode are connected with a power supply and an electric appliance.

2. The single-pole, multi-throw passive electronic switch of claim 1, wherein the transistor is one and the mechanical switch is a single-pole, single-throw switch.

3. The single-pole, multi-throw passive electronic switch of claim 2, wherein the base of the transistor is connected to one end of a current limiting resistor.

4. The single-pole, multi-throw passive electronic switch of claim 3, wherein the transistor has an emitter connected to a power source and a collector connected to a load.

5. The single-pole, multi-throw passive electronic switch of claim 3, wherein the transistor has a collector connected to a power source and an emitter connected to a load.

6. The single-pole, multi-throw passive electronic switch of claim 2, wherein a capacitor is bridged across the single-pole, single-throw switch.

7. The single-pole, multi-throw passive electronic switch of claim 1, wherein the transistor comprises: the mechanical switch is a single-pole multi-throw switch.

8. The single-pole-multiple-throw passive electronic switch according to claim 7, wherein the current-limiting resistor comprises a first current-limiting resistor and a second current-limiting resistor, one pole of the first transistor is connected to one end of the first current-limiting resistor, the other end of the first current-limiting resistor is connected to the single-pole-multiple-throw switch, one pole of the second transistor is connected to one end of the second current-limiting resistor, the other end of the second current-limiting resistor is connected to the single-pole-multiple-throw switch, and the first transistor and the other two poles of the second transistor are connected to a power supply and an electrical appliance.

9. The single-pole, multi-throw passive electronic switch of claim 8, wherein a base of the first transistor is coupled to one end of a first current limiting resistor and a base of the second transistor is coupled to one end of a second current limiting resistor.

10. The single-pole, multi-throw passive electronic switch of claim 7, wherein a capacitor is bridged across each of the single-pole, multi-throw switches.