CN206790074U - A kind of inexpensive control machines protection circuit - Google Patents
A kind of inexpensive control machines protection circuit Download PDFInfo
- Publication number
- CN206790074U CN206790074U CN201720455939.6U CN201720455939U CN206790074U CN 206790074 U CN206790074 U CN 206790074U CN 201720455939 U CN201720455939 U CN 201720455939U CN 206790074 U CN206790074 U CN 206790074U
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- Prior art keywords
- voltage
- controllable silicon
- resistance
- voltage end
- silicon
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Abstract
The utility model discloses a kind of inexpensive control machines protection circuit; including first voltage end and second voltage end; it is additionally provided with silicon controlled rectifier protecting circuit; the silicon controlled rectifier protecting circuit includes controllable silicon, voltage-regulator diode, resistance and electric capacity; the positive pole of the controllable silicon is connected with second voltage end and the negative pole of controllable silicon is grounded; the negative pole of the voltage-regulator diode is connected to first voltage end, positive pole is connected with the control terminal of controllable silicon, and the resistance is in parallel with electric capacity and resistance is connected between the positive pole of voltage-regulator diode and ground wire.Structure setting of the present utility model is reasonable, it uses controllable silicon to carry out triggering control, it not only can effectively reduce the usage amount of electronic component, reduce cost of manufacture, simultaneously because electronic component is less, so also can effectively reduce the damage of circuit, stability in use and reliability are improved, strong applicability and practicality is good.
Description
Technical field
The utility model belongs to protection circuit technical field, a kind of inexpensive control machines protection circuit of specific design.
Background technology
With the maturation of China's circuit engineering, various electronic circuits are quickly grown, because power circuit is when in use
Its overvoltage is prevented, typically can all there is power supply overvoltage protection circuit, an electronics member device of the power supply overvoltage protection circuit of conventional art
Part usage amount is more, and it not only considerably increases cost of manufacture, and easily influences the stability in use of circuit, so be applicable
Property and practicality are restricted.
The content of the invention
The purpose of this utility model is to provide the inexpensive controllable silicon that a kind of structure setting is reasonable and stability in use is good and touched
Send out protection circuit.
The technical scheme for realizing the utility model purpose is a kind of inexpensive control machines protection circuit, including the first electricity
Pressure side and second voltage end, are additionally provided with silicon controlled rectifier protecting circuit, and the silicon controlled rectifier protecting circuit includes controllable silicon, the pole of voltage stabilizing two
Pipe, resistance and electric capacity, the positive pole of the controllable silicon is connected with second voltage end and the negative pole of controllable silicon is grounded, the voltage stabilizing two
The negative pole of pole pipe is connected to first voltage end, positive pole is connected with the control terminal of controllable silicon, and the resistance is in parallel and electric with electric capacity
Resistance is connected between the positive pole of voltage-regulator diode and ground wire.
The utility model has positive effect：Structure setting of the present utility model is reasonable, and it uses controllable silicon to be touched
Hair control, not only can effectively reduce the usage amount of electronic component, reduce cost of manufacture, simultaneously because electronic component compared with
It is few, so also can effectively reduce the damage of circuit, improve stability in use and reliability, strong applicability and practicality is good.
Brief description of the drawings
In order that content of the present utility model is more likely to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail to the utility model, wherein：
Fig. 1 is circuit diagram of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 shows a kind of embodiment of the present utility model, and wherein Fig. 1 illustrates for circuit of the present utility model
Figure.
See Fig. 1, a kind of inexpensive control machines protection circuit, including first voltage end V1 and second voltage end V2, also
Provided with silicon controlled rectifier protecting circuit, the silicon controlled rectifier protecting circuit includes controllable silicon SCR 1, voltage-regulator diode ZD1, resistance R1 and electricity
Hold C1, the positive pole of the controllable silicon SCR 1 is connected with second voltage end V2 and the negative pole of controllable silicon SCR 1 is grounded, the voltage stabilizing
Diode ZD1 negative pole is connected to first voltage end V1, positive pole is connected with the control terminal of controllable silicon SCR 1, the resistance R1 with
Electric capacity C1 is in parallel and resistance is connected between voltage-regulator diode ZD1 positive pole and ground wire.
Its operation principle is summarized as follows：When V1 output voltages raise, voltage-stabiliser tube ZD1 conductings, the control terminal of controllable silicon SCR 1 is produced
Raw trigger voltage so that controlled silicon conducting, so as to V2 voltage shorted to earths, current foldback circuit and short-circuit protection circuit start work
Make so that whole power circuit is stopped.
When V1 output voltages recover normal, SCR control end trigger voltage is released over the ground by R1, and controllable silicon recovers disconnected
Open state, power circuit recover normal.
Structure setting of the present utility model is reasonable, and it uses controllable silicon to carry out triggering control, not only can effectively reduce electricity
The usage amount of sub- component, reduces cost of manufacture, simultaneously because electronic component is less, so also can effectively reduce circuit
Damage, improves stability in use and reliability, strong applicability and practicality is good.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.And these belong to the obvious changes or variations that connotation of the present utility model is extended out and still fall within this practicality
New protection domain.
Claims (1)
1. a kind of inexpensive control machines protection circuit, including first voltage end and second voltage end, it is additionally provided with controllable silicon guarantor
Protection circuit, it is characterised in that：The silicon controlled rectifier protecting circuit includes controllable silicon, voltage-regulator diode, resistance and electric capacity, described controllable
The positive pole of silicon is connected with second voltage end and the negative pole of controllable silicon is grounded, and the negative pole of the voltage-regulator diode is connected to the first electricity
Pressure side, positive pole are connected with the control terminal of controllable silicon, and the resistance is in parallel with electric capacity and resistance is being connected to voltage-regulator diode just
Between pole and ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455939.6U CN206790074U (en) | 2017-04-27 | 2017-04-27 | A kind of inexpensive control machines protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455939.6U CN206790074U (en) | 2017-04-27 | 2017-04-27 | A kind of inexpensive control machines protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206790074U true CN206790074U (en) | 2017-12-22 |
Family
ID=60707804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720455939.6U Active CN206790074U (en) | 2017-04-27 | 2017-04-27 | A kind of inexpensive control machines protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206790074U (en) |
-
2017
- 2017-04-27 CN CN201720455939.6U patent/CN206790074U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221227 Address after: 529000 Room 203, Floor 2, Building 1, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee after: Jiangmen Xiaosong Intelligent Technology Co.,Ltd. Address before: 529000 301, Floor 3, Building 2, No. 21, Jintong Road, Tangxia Town, Pengjiang District, Jiangmen City, Guangdong Province Patentee before: JIANGMEN PENGJIANG DISTRICT JINYING TECHNOLOGY Co.,Ltd. |