CN107565510A - A kind of circuit protecting device with excessively stream and over-voltage protecting function - Google Patents

A kind of circuit protecting device with excessively stream and over-voltage protecting function Download PDF

Info

Publication number
CN107565510A
CN107565510A CN201711023122.2A CN201711023122A CN107565510A CN 107565510 A CN107565510 A CN 107565510A CN 201711023122 A CN201711023122 A CN 201711023122A CN 107565510 A CN107565510 A CN 107565510A
Authority
CN
China
Prior art keywords
over
voltage
excessively stream
protection element
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.)
Pending
Application number
CN201711023122.2A
Other languages
Chinese (zh)
Inventor
范荣
李丹
何建成
孙天举
沈耀湘
吴国臣
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.)
Shanghai Changyuan Wayon Circuit Protection Co Ltd
Original Assignee
Shanghai Changyuan Wayon Circuit Protection Co Ltd
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 Shanghai Changyuan Wayon Circuit Protection Co Ltd filed Critical Shanghai Changyuan Wayon Circuit Protection Co Ltd
Priority to CN201711023122.2A priority Critical patent/CN107565510A/en
Publication of CN107565510A publication Critical patent/CN107565510A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention discloses a kind of circuit protecting device with excessively stream and over-voltage protecting function; it includes excessively stream and over-voltage protection element, two level over-voltage protection element, rear class functional circuit; wherein; described excessively stream and over-voltage protection element is connected in series with described rear class functional circuit, and described two level over-voltage protection element is connected in parallel between described excessively stream and over-voltage protection element and described rear class functional circuit.The present invention, particularly with high voltage, low-current case, can have more superior protective value in current anomaly or electric voltage exception in time voltage clamping in safe range and chopping current compared to traditional protection scheme.

Description

A kind of circuit protecting device with excessively stream and over-voltage protecting function
Technical field
The present invention relates to a kind of circuit protecting device with excessively stream and over-voltage protecting function, the circuit protecting device can be with The timely chopping current in current anomaly or electric voltage exception.
Background technology
In telecommunication transmission system, because the distance that the communications cable is set up is generally all long, it can largely send out The situation that raw power line surprisingly overlaps, when power line is directly taken on the communications cable due to fortuitous event, it is possible to can occur Overcurrent, overvoltage phenomenon.Heavy current invading can threaten to the safety of the calculator room equipments such as distributing frame, data switching exchane, seriously Shi Keneng can also trigger fire incident, cause serious consequence.So need protection location prevent the person and equipment by The injury of electric current, overvoltage, protection location can be acted in overcurrent, overvoltage intrusion, and protection is provided to communication equipment.At present The protection scheme of traditional route protection unit is the discrete PTC with positive temperature coefficient effect electrically discrete transient states in parallel Suppress diode TVS, this protection scheme is in printed substrate(PCB)Upper area occupied is bigger, especially in some conditions (High voltage, low current)The situation that over-voltage protection element burns can occur, trigger second accident.Integrated Protection Scheme for Transmission Line It can prevent because over-voltage protection element burns the second accident of initiation, and discrete component can be made up well and be taken on PCB The big deficiency of area.
The content of the invention
It is an object of the invention to:A kind of circuit protecting device with excessively stream and over-voltage protecting function is provided, so as to Timely chopping current when current anomaly or electric voltage exception.
The object of the invention is realized by following proposal:A kind of circuit protecting device with excessively stream and over-voltage protecting function, Including:One-level excessively stream and over-voltage protection element, two level over-voltage protection element, rear class functional circuit, wherein, described one-level excessively stream And over-voltage protection element is electrically coupled with described rear class functional circuit and is connected, described two level over-voltage protection element is electrically in parallel Between described excessively stream and over-voltage protection element and described rear class functional circuit.The present invention is different in current anomaly or voltage Timely chopping current when often.Particularly with high voltage, low-current case, there is more superior guarantor compared to traditional protection scheme Protect performance.
Described one-level excessively stream and over-voltage protection element are selected from the PTC-element with positive temperature coefficient effect and with overvoltage The Transient Suppression Diode TVS of the defencive function combination of two or more.
Described two level over-voltage protection element is selected from Transient Suppression Diode TVS, gas with surge protection function and put Fulgurite GDT, surge suppress IGCT TSS one or more combinations.
Described rear class functional circuit can be the one or more such as DC-DC conversion modules, signaling module, PWM module Combination.
The present invention is advantageous in that:Can in current anomaly and electric voltage exception in time voltage clamping in safe range simultaneously And chopping current, until failure is released from, so as to protect electronic equipment and circuit.
Brief description of the drawings
Fig. 1 is the Protection Scheme for Transmission Line schematic diagram for having in embodiment 1 excessively stream and over-voltage protecting function;
Fig. 2 is the Protection Scheme for Transmission Line schematic diagram for having in embodiment 2 excessively stream and over-voltage protecting function;
11 --- one-level excessively stream and over-voltage protection element;
12 --- two level over-voltage protection element;
13 --- rear class functional circuit;
14 --- there is the PTC-element of positive temperature coefficient effect;
15 --- Transient Suppression Diode TVS;
21 --- one-level excessively stream and over-voltage protection element;
22 --- two level over-voltage protection element;
23 --- rear class functional circuit;
24th, 26 --- there is the PTC-element one, two of positive temperature coefficient effect;
25 --- two-way Transient Suppression Diode TVS.
Embodiment
Below by way of specific embodiment, the present invention is described in further detail.
Embodiment 1
Fig. 1 is a kind of Protection Scheme for Transmission Line schematic diagram with excessively stream and over-voltage protecting function in the present invention.It includes one-level mistake Stream and over-voltage protection element 11, two level over-voltage protection element 12, rear class functional circuit 13.The one-level excessively stream and overvoltage protection member Part 11 includes PTC-element 14 and Transient Suppression Diode TVS 15 with positive temperature coefficient effect, and one-level excessively stream and overvoltage are protected Protection element 11 is electrically coupled with rear class functional circuit 13 and is connected, two level over-voltage protection element 12 be electrically connected in parallel on one-level excessively stream and Between over-voltage protection element 11 and rear class functional circuit 13.
Embodiment 2
Fig. 2 is a kind of Protection Scheme for Transmission Line schematic diagram with excessively stream and over-voltage protecting function in the present invention.It includes one-level mistake Stream and over-voltage protection element 21, two level over-voltage protection element 22, rear class functional circuit 23.The one-level excessively stream and overvoltage protection member Part 21 includes PTC-element one, 2 24,26 and two-way Transient Suppression Diode TVS 25 with positive temperature coefficient effect, one-level Excessively stream and over-voltage protection element 21 are electrically coupled with rear class functional circuit 23 to be connected, and two level over-voltage protection element 22 is electrically connected in parallel on Between one-level excessively stream and over-voltage protection element 21 and rear class functional circuit 23.

Claims (4)

  1. A kind of 1. circuit protecting device with excessively stream and over-voltage protecting function, it is characterised in that:Include excessively stream and overvoltage protection Element, two level over-voltage protection element, rear class functional circuit, described excessively stream and over-voltage protection element and described rear class function electricity Road is connected in series, and described two level over-voltage protection element is connected in parallel on described excessively stream and over-voltage protection element and described rear class work( Between energy circuit.
  2. 2. the circuit protecting device according to claim 1 with excessively stream and over-voltage protecting function, it is characterised in that described Excessively stream and over-voltage protection element is selected from PTC-element with positive temperature coefficient effect and the transient state with over-voltage protecting function presses down The diode TVS processed combination of two or more.
  3. 3. the circuit protecting device of excessively stream according to claim 1 and over-voltage protecting function, it is characterised in that described two Level over-voltage protection element is at least the Transient Suppression Diode TVS with over-voltage protecting function, gas-discharge tube GDT, surge suppression Combinations brake tube TSS one or more combinations.
  4. 4. the circuit protecting device according to claim 1 with excessively stream and over-voltage protecting function, it is characterised in that described Rear class functional circuit be one or more kinds of combinations in DC-DC conversion circuit, signal output apparatus, PWM output circuits.
CN201711023122.2A 2017-10-25 2017-10-25 A kind of circuit protecting device with excessively stream and over-voltage protecting function Pending CN107565510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711023122.2A CN107565510A (en) 2017-10-25 2017-10-25 A kind of circuit protecting device with excessively stream and over-voltage protecting function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711023122.2A CN107565510A (en) 2017-10-25 2017-10-25 A kind of circuit protecting device with excessively stream and over-voltage protecting function

Publications (1)

Publication Number Publication Date
CN107565510A true CN107565510A (en) 2018-01-09

Family

ID=61031749

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711023122.2A Pending CN107565510A (en) 2017-10-25 2017-10-25 A kind of circuit protecting device with excessively stream and over-voltage protecting function

Country Status (1)

Country Link
CN (1) CN107565510A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117220255A (en) * 2023-11-07 2023-12-12 上海维安半导体有限公司 Blocking type surge protector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2252433Y (en) * 1995-11-24 1997-04-16 买云 Anti-overvoltage and overcurrent protector for telecommunication system
CN2538087Y (en) * 2002-04-04 2003-02-26 江阴长江斯菲尔电力仪表有限公司 Power overvoltage protective instrument circuit
CN1674386A (en) * 2004-03-23 2005-09-28 华为技术有限公司 Balanced line signal interface protection circuit
CN200950537Y (en) * 2006-09-30 2007-09-19 华为技术有限公司 Protective circuit
CN106486992A (en) * 2015-08-27 2017-03-08 中兴通讯股份有限公司 A kind of interface protective circuit with oscillating characteristic and method
CN107221914A (en) * 2016-03-22 2017-09-29 董海龙 Circuit overvoltage, overcurrent and superheat is protected

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2252433Y (en) * 1995-11-24 1997-04-16 买云 Anti-overvoltage and overcurrent protector for telecommunication system
CN2538087Y (en) * 2002-04-04 2003-02-26 江阴长江斯菲尔电力仪表有限公司 Power overvoltage protective instrument circuit
CN1674386A (en) * 2004-03-23 2005-09-28 华为技术有限公司 Balanced line signal interface protection circuit
CN200950537Y (en) * 2006-09-30 2007-09-19 华为技术有限公司 Protective circuit
CN106486992A (en) * 2015-08-27 2017-03-08 中兴通讯股份有限公司 A kind of interface protective circuit with oscillating characteristic and method
CN107221914A (en) * 2016-03-22 2017-09-29 董海龙 Circuit overvoltage, overcurrent and superheat is protected

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117220255A (en) * 2023-11-07 2023-12-12 上海维安半导体有限公司 Blocking type surge protector
CN117220255B (en) * 2023-11-07 2024-04-05 上海维安半导体有限公司 Blocking type surge protector

Similar Documents

Publication Publication Date Title
EP1921531B1 (en) Solid state power controller with lightning protection
US8107208B2 (en) Insulated surge suppression circuit
CN101682187B (en) Circuit arrangement comprising at least two capacitors that are connected in series
EP2326005A1 (en) Solid state power controller with lightning protection
US20150364912A1 (en) Secondary Power System and Power Supply Device
WO2018011723A1 (en) Surge protection device
KR100906305B1 (en) Device for preventing the surge voltage for a bidirectional suppression
CN104578032B (en) Overvoltage protection device
CN104218561A (en) Multistage lightning protection circuit with delay circuit
CN107565510A (en) A kind of circuit protecting device with excessively stream and over-voltage protecting function
CN207368637U (en) A kind of circuit protecting device with overcurrent and over-voltage protecting function
CN208890365U (en) A kind of the power lightning protection circuit and lightning protection power source of 5G communication base station
US20120287548A1 (en) Surge protector
JPH10326702A (en) Surge absorber
KR100907943B1 (en) Integrated surge protector for cctv
KR100900912B1 (en) Device for Defence Surge of Dual Processing in Telephon Line
CN204905851U (en) Take fail safe's source defend thunder equipment
CN104466933B (en) A kind of limit energy intrinsically safe circuit
CN109217238B (en) Protection circuit and electronic equipment
CN205565714U (en) Lightning protection device with thunder and lightning frequency conversion inhibit feature
KR20170076266A (en) Protection Circuit for Power Supply
CN210404733U (en) Alternating current power supply lightning protection device with overcurrent and overvoltage protection functions
CN211377974U (en) Photovoltaic junction box with lightning protection function
JP2000013984A (en) Circuit for protecting communication equipment from lightning
CN210430915U (en) DC power supply lightning protection device with overcurrent and overvoltage protection function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Address after: 200083 806, floor 8, No. 125, Liuying Road, Hongkou District, Shanghai

Applicant after: Shanghai Wei'an Electronic Co.,Ltd.

Address before: Seven road 201202 Shanghai Pudong New Area Shiwan No. 1001

Applicant before: Shanghai Changyuan Wayon Circuit Protection Co.,Ltd.

CB02 Change of applicant information
CB02 Change of applicant information

Address after: Room 806, 8th floor, 125 Liuying Road, Hongkou District, Shanghai 200083

Applicant after: Shanghai Weian Electronics Co.,Ltd.

Address before: 806, 8th floor, 125 Liuying Road, Hongkou District, Shanghai 200083

Applicant before: Shanghai Wei'an Electronic Co.,Ltd.

CB02 Change of applicant information