CN106410744A - Electronic equipment voltage protection circuit and voltage protection device - Google Patents
Electronic equipment voltage protection circuit and voltage protection device Download PDFInfo
- Publication number
- CN106410744A CN106410744A CN201611015644.3A CN201611015644A CN106410744A CN 106410744 A CN106410744 A CN 106410744A CN 201611015644 A CN201611015644 A CN 201611015644A CN 106410744 A CN106410744 A CN 106410744A
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- China
- Prior art keywords
- electronic equipment
- power supply
- voltage
- switching tube
- protection circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention belongs to the field of voltage protection, and provides an electronic equipment voltage protection circuit and a voltage protection device. In the embodiment of the invention, according to the electronic equipment voltage protection circuit, a first electronic switch is controlled through setting a first voltage control module, a broken circuit is still kept in the case of low voltage of the power supply and thus, the current loop of the electronic equipment is also broken; a second voltage control module is set to control a second electronic switch, and timely cutoff in the case of high voltage of the power supply is realized to enable the current loop of the electronic equipment to be timely cut off; and the first voltage control module can control the first electronic switch to be closed when the voltage of the power supply is recovered to set voltage to enable the current loop of the electronic equipment to be on, the current loop of the electronic equipment can be timely cut off in the case of low power supply voltage or high power supply voltage, and the electronic equipment is well protected.
Description
Technical field
The invention belongs to voltage protection field, more particularly, to a kind of electronic equipment voltage protection circuit and voltage protection dress
Put.
Background technology
At present, usually can exist in circuit application and slip up voltage big or little for the setting voltage than electronic equipment because of wiring
It is connected on power circuit, or electrical network is unstable causes overvoltage of power supply or under-voltage, the lower end electronics burning on power circuit sets
Standby situation.
And there is bradykinesia or even failure and not possessing and accordingly indicate it is impossible to set to electronics in traditional voltage protection mechanism
The standby service life protected well, reduce electronic equipment
Content of the invention
The purpose of the embodiment of the present invention is to provide a kind of electronic equipment voltage protection circuit it is intended to solve electronic equipment electricity
Voltage protection circuit does not possess and accordingly indicates it is impossible to be protected well to electronic equipment, reduces electronic equipment service life
Problem.
The embodiment of the present invention is achieved in that a kind of electronic equipment voltage protection circuit, with power supply and electronic equipment
Connect, described electronic equipment voltage protection circuit includes：
First voltage control module, input is connected with the first end of described power supply, and described first voltage control module is included even
It is connected on the first electrical switch of electronic equipment current loop side, when the voltage of described power supply is less than the setting of described electronic equipment
Described first electrical switch is controlled to disconnect, reach the setting voltage time control of described electronic equipment when the voltage of described power supply during voltage
Making described first electrical switch closure makes described electronic equipment current loop conducting；
Second voltage control module, input is connected with the first end of described power supply, and described second voltage control module is included even
It is connected on the second electrical switch of described electronic equipment current loop opposite side, when the voltage of described power supply is higher than described electronic equipment
Setting voltage when control described second electrical switch to disconnect to make described electronic equipment current loop disconnect；
Described first voltage control module, the outfan of second voltage control module are all connected with the second end of described power supply or equal
Ground connection.
The another object of the embodiment of the present invention is to provide a kind of voltage protection, and including described electronic equipment, it is also
Including above-mentioned electronic equipment voltage protection circuit, described electronic equipment voltage protection circuit is connected with described electronic equipment.
In embodiments of the present invention, electronic equipment voltage protection circuit by arrange first voltage control module control its
One electrical switch, remains in that open circuit in the voltage low pressure of power supply so that electronic equipment current loop also keeps open circuit, simultaneously
Setting its second electrical switch of second voltage control module controller, can disconnect in time in the voltage high pressure of power supply so that
Electronic equipment current loop can disconnect in time, and first voltage control module can be when the voltage of power supply returns to setting voltage
Controllable first electrical switch closure makes the current loop of electronic equipment be held on it is achieved that electronic equipment is in supply voltage
When low pressure or high pressure, timely turn-off current loop is so that electronic equipment is protected well.
Brief description
Fig. 1 is the module map of electronic equipment voltage protection circuit provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of electronic equipment voltage protection circuit provided in an embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
Below in conjunction with specific embodiment, implementing of the present invention is described in detail：
As shown in figure 1, showing the module map of the electronic equipment voltage protection circuit that a preferred embodiment provides, for the ease of retouching
State, illustrate only part related to the present embodiment.
With reference to Fig. 1, a kind of electronic equipment voltage protection circuit 200, it is connected with power supply 100 and electronic equipment 300, described
Electronic equipment voltage protection circuit 200 includes the first voltage control module 220 with the first electrical switch 223 and has second
The second voltage control module 240 of electrical switch 243.
The input of first voltage control module 220 is connected with the first end of power supply 100, first voltage control module 220
Including the first electrical switch 223 being connected to electronic equipment 300 current loop side, when the voltage of power supply 100 sets less than electronics
During standby 300 setting voltage, first voltage control module 220 controls the first electrical switch 223 to disconnect, reaches when the voltage of power supply 100
To electronic equipment 300 setting voltage when first voltage control module 220 turn on, first voltage control module 220 controls simultaneously
First electrical switch 223 closure makes electronic equipment 300 current loop turn on.
The input of second voltage control module 240 is connected with the first end of power supply 100, second voltage control module 240
Including the second electrical switch 243 being connected to electronic equipment 300 current loop opposite side, when the voltage of power supply 100 is higher than electronics
During the setting voltage of equipment 300, second voltage control module 240 turns on, and second voltage control module 240 controls the second electricity simultaneously
Son switch 243 disconnects the second voltage control module 240 making electronic equipment 300 current loop disconnect；First voltage control module
220th, the outfan of second voltage control module 240 is all connected with the second end of power supply 100 or is all grounded.
Above-mentioned electronic equipment voltage protection circuit 200 passes through to arrange its first electricity of first voltage control module 220 control
Son switch 223, remains in that open circuit in the voltage low pressure of power supply 100 so that electronic equipment 300 current loop also keeps open circuit,
Simultaneously arrange its second electrical switch 243 of second voltage control module 240 controller, in the voltage high pressure of power supply 100 can and
When disconnect so that electronic equipment 300 current loop can disconnect in time, and first voltage control module 220 can be in power supply
100 voltage returns to controllable first electrical switch 223 closure during setting voltage and the current loop of electronic equipment 300 is protected
Hold conducting it is achieved that electronic equipment 300 in supply voltage low pressure or low pressure timely turn-off current loop so that electronic equipment
300 are protected well.
Fig. 2 shows the schematic diagram of the electronic equipment voltage protection circuit 200 that a preferred embodiment provides, for the ease of retouching
State, illustrate only part related to the present embodiment, with reference to Fig. 2：
In a preferred embodiment, first voltage control module 220 include Zener diode D1, relay K1, switching tube Q1 with
And first resistor R1.
The negative electrode of Zener diode D1 is connected with the first end of power supply 100, anode through first resistor and power supply 100 second
End connects or is grounded；The first end of the coil of relay K1 is connected with the first end of power supply 100, the second of the coil of relay K1
End is connected with the input of switching tube Q1, and the movable contact of relay K1 and normally-closed contact form the first electrical switch 223, relay
The movable contact of K1 and normally opened contact are connected between the second end of power supply 100 and electronic equipment 300, the normally opened contact of relay K1
Vacantly；The control end of switching tube Q1 is connected with the anode of Zener diode D1, outfan is connected with the second end of power supply 100 or connects
Ground.
The voltage of selection power supply 100 reaches the Zener diode D1 with regard to energy reverse breakdown for the setting voltage of electronic equipment 300,
Zener diode D1 conducting after switching tube Q1 conducting then relay K1 coil working produce magnetic field adhesive by armature with normally opened touch
Point connects so that electronic equipment 300 current loop turns on.
In other embodiments, relay K1 can be replaced using photoelectrical coupler, specifically, photoelectrical coupler luminous
The coil of relay K1 is replaced in source, and the light-receiving device of photoelectrical coupler is replaced the movable contact of relay K1, normally opened contact and normally closed touched
Point, i.e. the first electrical switch 223.
In a preferred embodiment, electronic equipment voltage protection circuit 200 also includes being less than electronics when the voltage of power supply 100
The low pressure indicating module 230 of low pressure instruction, the control end of low pressure indicating module 230 and the is assumed during the setting voltage of equipment 300
One voltage control module 220 connects, the input of low pressure indicating module 230 is connected with the first end of power supply 100, outfan with electricity
Second end in source 100 connects or is grounded.
Low pressure indicating module 230 and first voltage control module 220 cooperating, when first voltage control module 220 is led
When logical, low pressure indicating module 230 is not turned on, and when first voltage control module 220 is ended, low pressure indicating module 230 turns on and is in
Existing low pressure indicates with power supply 100 low pressure of electronic warning equipment 300.
In a preferred embodiment, low pressure indicating module 230 includes second resistance R2,3rd resistor R3, light emitting diode
D2 and switching tube Q2.
The control end of switching tube Q2 is connected with the input of switching tube Q1 with through second resistance R2, the input of switching tube Q2
It is connected with the first end of power supply 100；The outfan of switching tube Q2 is connected with the first end of 3rd resistor R3, and the of 3rd resistor R3
Two ends are connected with the anode of light emitting diode D2, and the negative electrode of light emitting diode D2 is connected with the second end of power supply 100 or is grounded.
In the present embodiment, when the voltage of power supply 100 reaches the setting voltage of electronic equipment 300, switching tube Q1 works, and opens
The control terminal potential closing pipe Q2 is pulled low and is not turned on, then low pressure indicating module 230 does not work；And the voltage of working as power supply 100 is low
When the setting voltage of electronic equipment 300, switching tube Q1 does not work, and the control end of switching tube Q2 is in high potential, switching tube Q2
Conducting, thus light emitting diode D2 lights assumes low pressure instruction.
In a preferred embodiment, second voltage control module 240 includes Zener diode D3 and relay K2.
The negative electrode of Zener diode D3 is connected with the first end of power supply 100, anode is through the coil of relay K2 and power supply
100 the second end connects or is grounded；The movable contact of relay K2 and normally-closed contact form the second electrical switch 243 and are connected to
Between the first end of power supply 100 and electronic equipment 300, the normally opened contact of relay K2 hanging.
Select power supply 100 voltage be higher than electronic equipment 300 setting voltage when could reverse breakdown Zener diode
D3, when the voltage of power supply 100 is higher than the setting voltage of electronic equipment 300, Zener diode D3 turns on, and the coil of relay K2 obtains
Producing magnetic field adhesive armature to work makes it leave normally-closed contact, and that is, the second electrical switch 243 disconnects, thus leading to electronics to set
Standby 300 current loops disconnect electronic equipment 300 and quit work, and the voltage realizing power supply 100 is higher than the setting electricity of electronic equipment 300
Electronic equipment 300 power-off can be made in time during pressure.
In a preferred embodiment, electronic equipment voltage protection circuit 200 is also included when the voltage of power supply 100 is higher than electronics
The high pressure indicating module 250 of high pressure instruction, the control end of high pressure indicating module 250 and the is assumed during the setting voltage of equipment 300
Two voltage control module 240 connect, the input of high pressure indicating module 250 is connected with the first end of power supply 100, outfan with electricity
Second end in source 100 connects or is grounded.High pressure indicating module 250 and second voltage control module 240 cooperating, when the first electricity
During pressure control module 220 cut-off, low pressure indicating module 230 is also switched off, the low pressure instruction when first voltage control module 220 turns on
Module 230 is also switched on and assumes low pressure indicating with power supply 100 low pressure of electronic warning equipment 300.
In a preferred embodiment, high pressure indicating module 250 include the 4th resistance R4, switching tube Q3, the 5th resistance R5 and
Light emitting diode D4.
The control end of switching tube Q3 is connected with the anode of Zener diode D3 through the 4th resistance R4, the input of switching tube Q3
It is connected with the first end of power supply 100；The anode of light emitting diode D4 is connected with the outfan of switching tube Q3 through the 5th resistance R5, sends out
The minus earth of optical diode D4 or be connected with the second end of power supply 100.
In the present embodiment, when the voltage of power supply 100 is in the setting voltage of electronic equipment 300, Zener diode D3 is not
Reverse-conducting, the control end of switching tube Q3 is in ground potential, and switching tube Q3 does not work, and light emitting diode D4 does not work, i.e. high pressure
Indicating module 250 does not work；And when the setting voltage that the voltage of power supply 100 is higher than electronic equipment 300, Zener diode D3 quilt
Reverse-conducting, the control end of switching tube Q3 is in high potential ON operation, thus light emitting diode D4 lights assumes high pressure instruction.
In the present embodiment, the light emitting diode that light emitting diode D2 adopts different glow colors from light emitting diode D4 is above-mentioned to distinguish
Low pressure instruction, high pressure instruction.
In a preferred embodiment, switching tube Q1, switching tube Q2, switching tube Q3 are NPN type triode or are N-type metal-oxide-semiconductor,
Switching tube Q1, switching tube Q2, switching tube Q3 be NPN type triode when, switching tube Q1, switching tube Q2, the control end of switching tube Q3,
Input, outfan are followed successively by the base stage of NPN type triode, colelctor electrode, emitter stage；Switching tube Q1, switching tube Q2, switching tube Q3
During for N-type metal-oxide-semiconductor, switching tube Q1, the control end of switching tube Q2, input, outfan are followed successively by the grid of N-type metal-oxide-semiconductor, leakage
Pole, source electrode.
The operation principle of electronic equipment voltage protection circuit 200 is described with one of embodiment below in conjunction with Fig. 2, opens
Close pipe Q1, Q2, Q3 all taking NPN type triode as a example.
1st, when the voltage of power supply 100 is in the setting voltage of electronic equipment 300, Zener diode D2 is cut-off state,
Switching tube Q3 control end no-voltage makes switching tube Q3 end, and light emitting diode D4 does not work, and represents non-high pressure.Relay K2 is normally closed
Relay, now, the coil two ends no-voltage of relay K2 makes relay K2 not work, and that is, the second electrical switch 243 is in and closes
Conjunction state；When the voltage of power supply 100 is in the setting voltage of electronic equipment 300, Zener diode D1 is in breakdown conditions, opens
For high potential so that switching tube Q1 conducting, it is low electricity that switching tube Q2 conducting makes switching tube Q3 control end to the control end of pass pipe Q1
Position, then switching tube Q3 cut-off, light emitting diode D2 does not work, and represents non-low pressure.Relay K1 is normally opened relay, normal work
When, relay K1 coil electricity so that the armature of relay K1 and normally opened contact are in attracting state, be electronic equipment 300 just
Often power, that is, the second electrical switch 243 and the first electrical switch 223 are in closure state.
2nd, when the voltage of power supply 100 is less than the setting voltage of electronic equipment 300, now the voltage of power supply 100 is less than surely
The breakdown voltage of pressure diode D1, then in cut-off state, switching tube Q2 control end is electronegative potential to Zener diode D1, switching tube
Q2 cut-off makes switching tube Q3 turn on, and light emitting diode D2 lights prompting and is now in low-pressure state；Simultaneously as switching tube Q1
Cut-off makes the coil two ends no-voltages difference of relay K1 or voltage difference is too low is insufficient to allow relay K1 to work, electronic equipment
300 current loops open circuit and quit work；Additionally, Zener diode D3 is in cut-off state, light emitting diode D3 does not work.
3rd, when the setting voltage that the voltage of power supply 100 is higher than electronic equipment 300, now Zener diode D3 is breakdown,
The control end making switching tube Q3 is high potential, and switching tube Q3 conducting makes light emitting diode D4 light, and represents the electricity of power supply 100
Pressure high pressure, due to Zener diode D3 turn-on relay K2 coil electricity so that the contact of normally closed relay K2 disconnects,
I.e. the second electrical switch 243 disconnects, electronic equipment 300 current loop open circuit and quit work；Additionally, Zener diode D1 is still
So that switching tube Q1 turns on and switching tube Q2 cut-off, light emitting diode D2 does not work for conducting.
Additionally, additionally providing a kind of voltage protection, including electronic equipment（I.e. electronic equipment 300 shown in Fig. 2）, electricity
Pressure protection device also includes above-mentioned electronic equipment voltage protection circuit 200, and electronic equipment voltage protection circuit 200 and electronics set
Standby electrical connection, the structure of electronic equipment voltage protection circuit 200 and its principle of work and power are performed as described above described in example, no longer superfluous here
State.
In embodiments of the present invention, electronic equipment voltage protection circuit by arrange first voltage control module control its
One electrical switch, remains in that open circuit in the voltage low pressure of power supply so that electronic equipment current loop also keeps open circuit, simultaneously
Setting its second electrical switch of second voltage control module controller, can disconnect in time in the voltage high pressure of power supply so that
Electronic equipment current loop can disconnect in time, and first voltage control module can be when the voltage of power supply returns to setting voltage
Controllable first electrical switch closure makes the current loop of electronic equipment be held on it is achieved that electronic equipment is in supply voltage
When low pressure or high pressure, timely turn-off current loop is so that electronic equipment is protected well.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of electronic equipment voltage protection circuit, is connected it is characterised in that described electronic equipment with power supply and electronic equipment
Voltage protection circuit includes：
First voltage control module, input is connected with the first end of described power supply, and described first voltage control module is included even
It is connected on the first electrical switch of electronic equipment current loop side, when the voltage of described power supply is less than the setting of described electronic equipment
Described first electrical switch is controlled to disconnect, reach the setting voltage time control of described electronic equipment when the voltage of described power supply during voltage
Making described first electrical switch closure makes described electronic equipment current loop conducting；
Second voltage control module, input is connected with the first end of described power supply, and described second voltage control module is included even
It is connected on the second electrical switch of described electronic equipment current loop opposite side, when the voltage of described power supply is higher than described electronic equipment
Setting voltage when control described second electrical switch to disconnect to make described electronic equipment current loop disconnect；
Described first voltage control module, the outfan of second voltage control module are all connected with the second end of described power supply or equal
Ground connection.
2. electronic equipment voltage protection circuit according to claim 1 is it is characterised in that described first voltage control module
Including Zener diode D1, relay K1, switching tube Q1 and first resistor R1；
Wherein, the negative electrode of described Zener diode D1 is connected with the first end of described power supply, anode is through described first resistor and institute
The second end stating power supply connects or is grounded；
The first end of coil of described relay K1 is connected with the first end of described power supply, the second of the coil of described relay K1
End is connected with the input of described switching tube Q1, and the movable contact of described relay K1 and normally opened contact form described first electronic cutting
Close and be connected between the second end of described power supply and described electronic equipment, the normally opened contact of described relay K1 hanging；Described
The control end of switching tube Q1 is connected with the anode of described Zener diode D1, outfan is connected with the second end of described power supply or connects
Ground.
3. electronic equipment voltage protection circuit according to claim 2 is it is characterised in that described electronic equipment voltage protection
Circuit also includes low pressure indicating module, and the control end of described low pressure indicating module is connected with described first voltage control module, institute
The input stating low pressure indicating module is connected with the first end of described power supply, outfan is connected with the second end of described power supply or connects
Ground.
4. electronic equipment voltage protection circuit according to claim 3 is it is characterised in that described low pressure indicating module includes
Second resistance R2,3rd resistor R3, light emitting diode D2 and switching tube Q2；
Wherein, the control end of described switching tube Q2 is connected with the input of described switching tube Q1 with through described second resistance R2, institute
The input stating switching tube Q2 is connected with the first end of described power supply；The outfan of described switching tube Q2 and described 3rd resistor R3
First end connect, the second end of described 3rd resistor R3 is connected with the anode of described light emitting diode D2, described light-emitting diodes
The negative electrode of pipe D2 is connected with the second end of described power supply or is grounded.
5. the electronic equipment voltage protection circuit according to any one of Claims 1-4 is it is characterised in that described second is electric
Pressure control module includes Zener diode D3 and relay K2；
Wherein, the negative electrode of described Zener diode D3 be connected with the first end of described power supply, the line through described relay K2 for the anode
Being connected with the second end of described power supply or be grounded of circle；The movable contact of described relay K2 and described second electricity of normally-closed contact composition
Son switchs and is connected between the first end of described power supply and described electronic equipment, the normally opened contact of described relay K2 is hanging.
6. electronic equipment voltage protection circuit according to claim 5 is it is characterised in that described electronic equipment voltage protection
Circuit also includes high pressure indicating module, and the control end of described high pressure indicating module is connected with described second voltage control module, institute
The input stating high pressure indicating module is connected with the first end of described power supply, outfan is connected with the second end of described power supply or connects
Ground.
7. electronic equipment voltage protection circuit according to claim 6 is it is characterised in that described high pressure indicating module includes
4th resistance R4, switching tube Q3, the 5th resistance R5 and light emitting diode D4；
Wherein, the control end of described switching tube Q3 is connected with the anode of described Zener diode D3 through described 4th resistance R4, institute
The input stating switching tube Q3 is connected with the first end of described power supply；The anode of described light emitting diode D4 is through described 5th resistance
R5 is connected with the outfan of described switching tube Q3, the minus earth of described light emitting diode D4 or the second end with described power supply connect
Connect.
8. electronic equipment voltage protection circuit according to claim 4 is it is characterised in that described switching tube Q1, switching tube
Q2 is NPN type triode, and described switching tube Q1, the control end of switching tube Q2, input, outfan are followed successively by described NPN type three
The base stage of pole pipe, colelctor electrode, emitter stage；Or
Described switching tube Q1, switching tube Q2 are N-type metal-oxide-semiconductor, described switching tube Q1, the control end of switching tube Q2, input, output
End is followed successively by the grid of described N-type metal-oxide-semiconductor, drain electrode, source electrode.
9. electronic equipment voltage protection circuit according to claim 7 is it is characterised in that described switching tube Q3 is NPN type
Audion, the control end of described switching tube Q3, input and outfan are followed successively by the base stage of described NPN type triode, current collection
Pole and emitter stage；Or
Described switching tube Q3 is N-type metal-oxide-semiconductor, and the control end of described switching tube Q3, input, outfan are followed successively by described N-type MOS
The grid of pipe, drain electrode, source electrode.
10. a kind of voltage protection, electronic equipment it is characterized in that, including the electricity according to any one of claim 1 to 9
Sub- equipment voltage protection circuit, described electronic equipment voltage protection circuit is connected with described electronic equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015644.3A CN106410744A (en) | 2016-11-18 | 2016-11-18 | Electronic equipment voltage protection circuit and voltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015644.3A CN106410744A (en) | 2016-11-18 | 2016-11-18 | Electronic equipment voltage protection circuit and voltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106410744A true CN106410744A (en) | 2017-02-15 |
Family
ID=58068898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015644.3A Pending CN106410744A (en) | 2016-11-18 | 2016-11-18 | Electronic equipment voltage protection circuit and voltage protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106410744A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435004U (en) * | 2011-12-28 | 2012-09-12 | 惠州Tcl移动通信有限公司 | Dual-purpose over-voltage and over-current protection circuit |
| CN202997501U (en) * | 2012-12-24 | 2013-06-12 | 泉州豪杰信息科技发展有限公司 | High and low voltage protection circuit |
| CN104078923A (en) * | 2013-03-28 | 2014-10-01 | 海洋王（东莞）照明科技有限公司 | Overvoltage and undervoltage protection circuit and illumination device |
| US20140313620A1 (en) * | 2013-04-19 | 2014-10-23 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Voltage protection circuit |
-
2016
- 2016-11-18 CN CN201611015644.3A patent/CN106410744A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435004U (en) * | 2011-12-28 | 2012-09-12 | 惠州Tcl移动通信有限公司 | Dual-purpose over-voltage and over-current protection circuit |
| CN202997501U (en) * | 2012-12-24 | 2013-06-12 | 泉州豪杰信息科技发展有限公司 | High and low voltage protection circuit |
| CN104078923A (en) * | 2013-03-28 | 2014-10-01 | 海洋王（东莞）照明科技有限公司 | Overvoltage and undervoltage protection circuit and illumination device |
| US20140313620A1 (en) * | 2013-04-19 | 2014-10-23 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Voltage protection circuit |
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Application publication date: 20170215 |
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