CN103326344A - Overvoltage limiting circuit - Google Patents

Overvoltage limiting circuit Download PDF

Info

Publication number
CN103326344A
CN103326344A CN2013102772346A CN201310277234A CN103326344A CN 103326344 A CN103326344 A CN 103326344A CN 2013102772346 A CN2013102772346 A CN 2013102772346A CN 201310277234 A CN201310277234 A CN 201310277234A CN 103326344 A CN103326344 A CN 103326344A
Authority
CN
China
Prior art keywords
resistance
diode
joins
capacitor
limiting circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2013102772346A
Other languages
Chinese (zh)
Other versions
CN103326344B (en
Inventor
刘连光
郑宽
陈艳伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China Electric Power University
Original Assignee
North China Electric Power University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by North China Electric Power University filed Critical North China Electric Power University
Priority to CN201310277234.6A priority Critical patent/CN103326344B/en
Publication of CN103326344A publication Critical patent/CN103326344A/en
Application granted granted Critical
Publication of CN103326344B publication Critical patent/CN103326344B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention provides an overvoltage limiting circuit. According to the circuit, an electrical equipment power supply with the need of protection of is connected with diodes from D1 to D5, capacitors from C1 to C3, an electrolytic capacitor CD1, resistors from R1 to R9, a potentiometer RW, an operational amplifier IC1, and a field effect transistor or an electronic switching devices O1 such as an IGBT and a triode. The overvoltage limiting circuit in working can quickly suppress and absorb transient voltage and consume energy so as to protect the electrical equipment, specifically, the transient voltage can be rapidly and reliably suppressed, especially a high power transient voltage surge, and only little electrical energy is consumed under a set suppression voltage value. The overvoltage limiting circuit also has a good suppression effect on repetitive high voltage pulses and transient voltage with long duration.

Description

A kind of overvoltage limiting circuit
Technical field
The present invention relates to a kind of protective circuit, relate in particular to a kind of overvoltage limiting circuit.
Background technology
In existing power supply grid, often can there be various high-voltage pulses because of the access of a variety of causes such as thunder and lightning, other electric equipment.In addition, in the circuit of inverter power supply, sometimes also high-voltage pulse can appear.
The interference of various high-voltage pulses can make the power consumption equipment cisco unity malfunction, and it is to damaging power consumption equipment sometimes.In order to protect power consumption equipment safety, normally to work, usually in circuit, adopt the protective circuits such as gas discharge tube, piezo-resistance, transient voltage suppressor diode or capacitance-resistance series connection absorption to suppress this interference in the prior art.But the inhibition power of gas discharge tube, piezo-resistance, transient voltage suppressor diode is less, and repeatedly repeats to disturb easy damage gas discharge tube, piezo-resistance, transient voltage suppressor diode.In addition; there are a critical defect in gas discharge tube, piezo-resistance, transient voltage suppressor diode, have exactly negative resistance charactertistic, often can impact resistance decreasing of lower moment at high voltage pulse; can not be immediately recover high resistant at pressure limiting point, become the low-resistance load of power supply circuits and burnt out by large electric current.And capacitance-resistance series connection absorbing circuit exists the problem of the normal power source energy that consumes circuit, if when absorbing the transient voltage impact of relatively high power, it is very large that the consumption of this energy will become.
Therefore, how can be the inhibition transient voltage of fast and reliable, and suppress powerful transient voltage and impact, only consuming simultaneously very little electric energy under the inhibition magnitude of voltage becomes the problem of needing solution badly.
Summary of the invention
The object of the invention is to propose a kind of overvoltage limiting circuit, this circuit can function as follows: 1. the transient voltage inhibitory action of fast and reliable: 2. can suppress powerful transient voltage and impact: 3. set and suppress only to consume under the magnitude of voltage very little electric energy.
For reaching this purpose, the present invention by the following technical solutions:
A kind of overvoltage limiting circuit; comprise: binding post 220V1 (1) is connected 23 with the positive pole of diode D1 (3) with diode D2) negative pole be connected; the negative pole of the negative pole of diode D1 (3) and diode D3 (4); the positive pole of electrochemical capacitor CD1 (5); one end of capacitor C 1 (6); one end of resistance R 1 (7); one end of resistance R 6 (10) joins; binding post 220V2 (2) is connected 22 with the positive pole of diode D3 (4) with diode D4) negative pole be connected; the positive pole of the positive pole of diode D2 (23) and diode D4 (22); the negative pole of electrochemical capacitor CD1 (5); the other end of capacitor C 1 (6); the other end of capacitor C 2 (9); the other end of resistance R 2 (18); the other end of resistance R 5 (17); the other end of resistance R 7 (14); the other end of resistance R 9 (19) joins; and be connected to the negative pole VS of the first dc power supply; the negative pole of the other end of resistance R 1 (7) and diode D5 (21); the end of potentiometer RW (8) joins; the normal phase input end of one end of capacitor C 2 (9) and amplifier IC1 (11); the central slide end of potentiometer RW (8) joins; one end of the positive pole of diode D5 (21) and resistance R 8 (20); one end of resistance R 9 (19) joins; one end of the other end of potentiometer RW (8) and resistance R 2 (18) joins; one end of the negative-phase input of amplifier IC1 (11) and resistance R 3 (12); one end of capacitor C 3 (15); one end of resistance R 5 (17); one end of resistance R 4 (16) joins; the other end of resistance R 4 (16); the other end of resistance R 8 (20) and the anodal VC of the first dc power supply join; the other end of the output of amplifier IC1 (11) and resistance R 3 (12); the other end of capacitor C 3 (15); the grid of switching device O1 (13) joins; the drain electrode of the other end of resistance R 6 (10) and switching device O1 (13) is joined; one end of the source electrode of switching device O1 (13) and resistance R 7 (14) joins, and described binding post is the power supply that needs the electric equipment of protection.
Especially, described switching device O1 is field effect transistor, IGBT pipe or triode.
Especially, described amplifier IC1 is powered by the second dc power supply.
By above-mentioned overvoltage limiting circuit, inhibition transient voltage that can fast and reliable, particularly powerful transient voltage impacts, and suppresses only to consume under the magnitude of voltage very little electric energy and set.
Description of drawings
Fig. 1 is according to the circuit diagram of the overvoltage limiting circuit of the embodiment of the invention.
The technical characterictic that Reference numeral referred to respectively among the figure is:
1, binding post 220V1:2, binding post 220V2:3, diode D1:4, diode D3:5, electrochemical capacitor CD1:6, capacitor C 1:7, resistance R 1:8, potentiometer RW:9, capacitor C 2:10, resistance R 6:11, amplifier IC1:12, resistance R 3:13, switching device O1:14, resistance R 7:15, capacitor C 3:16, resistance R 4:17, resistance R 5:18, resistance R 2:19, resistance R 9:20, resistance R 8:21, diode D5:22, diode D4:23, diode D2.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.Be understandable that, specific embodiment described herein only is used for explaining the present invention, but not limitation of the invention.Also need to prove in addition, for convenience of description, only show part related to the present invention in the accompanying drawing but not entire infrastructure.
Referring to accompanying drawing 1, overvoltage limiting circuit is according to a particular embodiment of the invention disclosed.
Circuit of the present invention as shown in Figure 1; its structure is that binding post 220V1 (1) is connected 23 with the positive pole of diode D1 (3) with diode D2) negative pole be connected; the negative pole of the negative pole of diode D1 (3) and diode D3 (4); the positive pole of electrochemical capacitor CD1 (5); one end of capacitor C 1 (6); one end of resistance R 1 (7); one end of resistance R 6 (10) joins; binding post 220V2 (2) is connected 22 with the positive pole of diode D3 (4) with diode D4) negative pole be connected; the positive pole of the positive pole of diode D2 (23) and diode D4 (22); the negative pole of electrochemical capacitor CD1 (5); the other end of capacitor C 1 (6); the other end of capacitor C 2 (9); the other end of resistance R 2 (18); the other end of resistance R 5 (17); the other end of resistance R 7 (14); the other end of resistance R 9 (19) joins; and be connected to the negative pole VS of the first dc power supply; the negative pole of the other end of resistance R 1 (7) and diode D5 (21); the end of potentiometer RW (8) joins; the normal phase input end of one end of capacitor C 2 (9) and amplifier IC1 (11); the central slide end of potentiometer RW (8) joins; one end of the positive pole of diode D5 (21) and resistance R 8 (20); one end of resistance R 9 (19) joins; one end of the other end of potentiometer RW (8) and resistance R 2 (18) joins; one end of the negative-phase input of amplifier IC1 (11) and resistance R 3 (12); one end of capacitor C 3 (15); one end of resistance R 5 (17); one end of resistance R 4 (16) joins; the other end of resistance R 4 (16); the other end of resistance R 8 (20) and the anodal VC of the first dc power supply join; the other end of the output of amplifier IC1 (11) and resistance R 3 (12); the other end of capacitor C 3 (15); the grid of switching device O1 (13) joins; the drain electrode of the other end of resistance R 6 (10) and switching device O1 (13) is joined; one end of the source electrode of switching device O1 (13) and resistance R 7 (14) joins, and described binding post 220V1 and 220V2 are the power supply that needs the electric equipment of protection.
Amplifier IC1 can be powered by dc power supply, preferably, adopts the second dc power supply (not shown) that is different from the first dc power supply to power.
The operation principle of this circuit is as follows: diode D1 (3) in the circuit, D2 (23), D3 (4), D4 (22) forms full-wave rectifier, electrochemical capacitor CD1 (5), capacitor C 1 (6) forms transient voltage Absorption Capacitance, resistance R 1 (7), R2 (18), R3 (12), R4 (16), R5 (17), R6 (10), R7 (14), R8 (20), R9 (19), potentiometer RW (8), capacitor C 2 (9), amplifier IC1 (11), switching device O1 (13) and diode D5 (21) form rheostat transient voltage energy consumption device.Resistance R 8 (20), R9 (19), diode D5 (21) provide a start bias for amplifier IC1 (11), prevent the operation irregularity that amplifier IC1 (11) might occur when circuit start.
Full-wave rectifier accesses transient voltage Absorption Capacitance two ends with transient voltage, because the voltage at transient voltage Absorption Capacitance two ends can not suddenly change, so just clamped down on fast disturbing pulse, the voltage at transient voltage Absorption Capacitance two ends was increased to the restriction point when upper if transient voltage continue to rise, rheostat transient voltage energy consumption device will begin conducting, and the continuation of the voltage at restriction transient voltage Absorption Capacitance two ends raises.In use, can select according to actual needs the design parameter of each element in this overvoltage limiting circuit, so that the overvoltage limiting circuit has different high-power transient voltage absorptions.Like this, this circuit can be realized the transient voltage inhibitory action of fast and reliable, also can suppress powerful transient voltage and impact.
In addition, this overvoltage limiting circuit only needs circuit that the voltage of transient voltage Absorption Capacitance is charged to operating voltage in the connection process, only consumes later on circuit electric energy seldom.Can find out from the operation principle of this circuit, this circuit also has good inhibitory action for repeating high voltage pulse and long-term transient voltage.
And can find out from the work characteristics of this circuit, this circuit is for the disturbing pulse unrestraint effect under the disturbing pulse that is lower than the normal power supply voltage peak or the restriction point, namely under the effect of little disturbing pulse (being no more than in the situation of limit value), only clamped down on by Absorption Capacitance, the transient voltage energy consumption device does not put into operation, and this also is another characteristics of energy saving of this overvoltage limiting circuit.
Adopting the exemplary switching device O1 that shows of field effect transistor in accompanying drawing 1 is field effect transistor, but should be understood that this switching device O1 also can be for IGBT manages, triode, and it also can play identical effect.
Therefore, by above-mentioned overvoltage limiting circuit, inhibition transient voltage that can fast and reliable, particularly powerful transient voltage impacts, and suppresses only to consume under the magnitude of voltage very little electric energy and set.
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine protection range by claims of submitting to.

Claims (3)

1. overvoltage limiting circuit is characterized in that:
Binding post 220V1 (1) is connected 23 with the positive pole of diode D1 (3) with diode D2) negative pole be connected; the negative pole of the negative pole of diode D1 (3) and diode D3 (4); the positive pole of electrochemical capacitor CD1 (5); one end of capacitor C 1 (6); one end of resistance R 1 (7); one end of resistance R 6 (10) joins; binding post 220V2 (2) is connected 22 with the positive pole of diode D3 (4) with diode D4) negative pole be connected; the positive pole of the positive pole of diode D2 (23) and diode D4 (22); the negative pole of electrochemical capacitor CD1 (5); the other end of capacitor C 1 (6); the other end of capacitor C 2 (9); the other end of resistance R 2 (18); the other end of resistance R 5 (17); the other end of resistance R 7 (14); the other end of resistance R 9 (19) joins; and be connected to the negative pole of the first dc power supply; the negative pole of the other end of resistance R 1 (7) and diode D5 (21); the end of potentiometer RW (8) joins; the normal phase input end of one end of capacitor C 2 (9) and amplifier IC1 (11); the central slide end of potentiometer RW (8) joins; one end of the positive pole of diode D5 (21) and resistance R 8 (20); one end of resistance R 9 (19) joins; one end of the other end of potentiometer RW (8) and resistance R 2 (18) joins; one end of the negative-phase input of amplifier IC1 (11) and resistance R 3 (12); one end of capacitor C 3 (15); one end of resistance R 5 (17); one end of resistance R 4 (16) joins; the other end of resistance R 4 (16); the other end of resistance R 8 (20) and the positive pole of the first dc power supply join; the other end of the output of amplifier IC1 (11) and resistance R 3 (12); the other end of capacitor C 3 (15); the grid of switching device O1 (13) joins; the drain electrode of the other end of resistance R 6 (10) and switching device O1 (13) is joined; one end of the source electrode of switching device O1 (13) and resistance R 7 (14) joins, and described binding post is the power supply that needs the electric equipment of protection.
2. overvoltage limiting circuit according to claim 1 is characterized in that:
Described switching device O1 is field effect transistor, IGBT pipe or triode.
3. overvoltage limiting circuit according to claim 1 is characterized in that:
Described amplifier IC1 is powered by the second dc power supply.
CN201310277234.6A 2013-07-03 2013-07-03 A kind of overvoltage limiting circuit Expired - Fee Related CN103326344B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310277234.6A CN103326344B (en) 2013-07-03 2013-07-03 A kind of overvoltage limiting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310277234.6A CN103326344B (en) 2013-07-03 2013-07-03 A kind of overvoltage limiting circuit

Publications (2)

Publication Number Publication Date
CN103326344A true CN103326344A (en) 2013-09-25
CN103326344B CN103326344B (en) 2015-10-28

Family

ID=49194949

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310277234.6A Expired - Fee Related CN103326344B (en) 2013-07-03 2013-07-03 A kind of overvoltage limiting circuit

Country Status (1)

Country Link
CN (1) CN103326344B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104037724A (en) * 2014-06-12 2014-09-10 四川联友电讯技术有限公司 Overvoltage protection communication base station
CN104052046A (en) * 2014-06-12 2014-09-17 四川联友电讯技术有限公司 High-reliability communication base station controller
CN109921400A (en) * 2019-04-03 2019-06-21 昆山通达测科电子科技有限公司 High-speed high-power surge voltage-suppressing circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110317322A1 (en) * 2008-12-18 2011-12-29 System General Corp. Control circuit with protection circuit for power supply
CN202696138U (en) * 2012-06-05 2013-01-23 江苏固德威电源科技有限公司 Excess voltage absorption protection circuit capable of accurately presetting protection value
CN103141002A (en) * 2010-07-30 2013-06-05 霍廷格·鲍德温测量技术有限责任公司 Protective circuit
CN203026930U (en) * 2012-11-26 2013-06-26 西安威正电子科技有限公司 Circuit for solving voltage overload of input port of operational amplifier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110317322A1 (en) * 2008-12-18 2011-12-29 System General Corp. Control circuit with protection circuit for power supply
CN103141002A (en) * 2010-07-30 2013-06-05 霍廷格·鲍德温测量技术有限责任公司 Protective circuit
CN202696138U (en) * 2012-06-05 2013-01-23 江苏固德威电源科技有限公司 Excess voltage absorption protection circuit capable of accurately presetting protection value
CN203026930U (en) * 2012-11-26 2013-06-26 西安威正电子科技有限公司 Circuit for solving voltage overload of input port of operational amplifier

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李春飞等: "多端口过压安全保护电路设计与研究", 《信息安全与技术》, 31 December 2011 (2011-12-31) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104037724A (en) * 2014-06-12 2014-09-10 四川联友电讯技术有限公司 Overvoltage protection communication base station
CN104052046A (en) * 2014-06-12 2014-09-17 四川联友电讯技术有限公司 High-reliability communication base station controller
CN109921400A (en) * 2019-04-03 2019-06-21 昆山通达测科电子科技有限公司 High-speed high-power surge voltage-suppressing circuit
CN109921400B (en) * 2019-04-03 2021-08-17 昆山通达测科电子科技有限公司 High-speed high-power surge voltage suppression circuit

Also Published As

Publication number Publication date
CN103326344B (en) 2015-10-28

Similar Documents

Publication Publication Date Title
CN203415972U (en) Input voltage surge suppression circuit
CN103904620A (en) Direct current power supply input reverse irrigation prevention circuit and method
CN204906177U (en) IGBT turn -offs overvoltage active clamping circuit
CN203415971U (en) Anti-overvoltage surge protection control circuit designed based on field-effect transistor
CN203574534U (en) Surge current suppressing circuit
CN103166444A (en) Remote turn-off control signal receiving circuit
CN204068199U (en) A kind of under-voltage surge current protection circuit
CN103326344B (en) A kind of overvoltage limiting circuit
CN202978213U (en) Power supply overvoltage protection circuit
CN208589916U (en) It is a kind of with overvoltage protection and it is anti-sparking function dc power interface circuit
CN202772791U (en) Short circuit protection circuit used for parallel connection power supply
CN109103865A (en) A kind of power supply overvoltage protection circuit of high pressure barricade
CN106253652B (en) A kind of over-pressure safety device of inverter
CN208904649U (en) A kind of power supply overvoltage protection circuit of high pressure barricade
CN203707754U (en) PFC current protection and control circuit, and electrical equipment
CN203415942U (en) Fault signal processing circuit
CN207625441U (en) A kind of soft starting circuit of anti-over-pressed, under-voltage surge
CN206850404U (en) A kind of line under-voltage protection circuit with the input of retarding window wide scope
CN203932967U (en) A kind of coil controller
CN103441486A (en) Reverse-connection-prevention protective circuit of high current power supply
CN209282830U (en) Surge current suppression circuit
CN203339686U (en) Constant current source short circuit protection inhibition circuit
CN102427225A (en) TVS (transient voltage suppressor) current peak protective circuit
CN104917153A (en) Short circuit protection circuit used for parallel-connected power supply
CN104124861A (en) Absorption circuit

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CB03 Change of inventor or designer information

Inventor after: Liu Lianguang

Inventor after: Jiang Zhihua

Inventor after: Zheng Kuan

Inventor after: Chen Yanwei

Inventor after: Wang Kairang

Inventor after: Ge Xiaoning

Inventor before: Liu Lianguang

Inventor before: Zheng Kuan

Inventor before: Chen Yanwei

COR Change of bibliographic data
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151028

Termination date: 20200703

CF01 Termination of patent right due to non-payment of annual fee