CN106410742A - High-speed DC electronic fuse circuit - Google Patents
High-speed DC electronic fuse circuit Download PDFInfo
- Publication number
- CN106410742A CN106410742A CN201610953608.5A CN201610953608A CN106410742A CN 106410742 A CN106410742 A CN 106410742A CN 201610953608 A CN201610953608 A CN 201610953608A CN 106410742 A CN106410742 A CN 106410742A
- Authority
- CN
- China
- Prior art keywords
- circuit
- direct current
- velocity electrons
- current high
- insurance
- 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
Links
Classifications
-
- 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
- H02H3/08—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 current
Abstract
The invention relates to a high-speed DC electronic fuse circuit, which comprises a startup circuit (1) and an over current protection circuit (2), wherein the startup circuit (1) and the over current protection circuit (2) are electrically connected. The high-speed DC electronic fuse circuit has the advantages of simple structure, low cost, high power, quick response speed, practicality and convenience.
Description
Technical field
The present invention is used for the short circuit of DC electric apparatus equipment, overcurrent protection, specifically relates to a kind of High-speed DC Electronic Protection electricity
Road.
Background technology
At present, urban electric power switch is commonly furnished with fuse in the past, and the fusing process of fuse is exactly a heat in fact
The process of accumulation.When circuital current reaches the blowout current of fuse or exceedes blowout current, fuse just rapid fusing from
And protection equipment is not in bigger problem, if the time of overcurrent is short enough, do not reach the fusing-off temperature of fuse, fusing
Device will not fuse because the dispersibility of fuse larger be unable to quick fuse usually electric equipment is caused greater area of
Damage, therefore reliability just shows slightly not enough.
Content of the invention
Technical problem solved by the invention is to provide a kind of High-speed DC electronic insurance circuit, to solve above-mentioned background
Technical disadvantages.
Technical problem solved by the invention employs the following technical solutions to realize:This direct current high-velocity electrons insurance circuit,
Constitute including start-up circuit (1), current foldback circuit (2), described start-up circuit (1) is electrically connected with current foldback circuit (2).
A kind of described direct current high-velocity electrons insurance circuit it is characterised in that：Described start-up circuit (1) by R1, R2,
R3, C1, IC1 form.
A kind of described direct current high-velocity electrons insurance circuit it is characterised in that：Described current foldback circuit (2) by BT1,
BG1, R4 form.
A kind of described direct current high-velocity electrons insurance circuit it is characterised in that：Described positive source VCC and R1, C1,
R3, one-way SCR
The anode A of BT1, the colelctor electrode of IGBT module BG1 are connected, the lower end of described parallel circuit R, 1C1 and photoelectrical coupler IC1
Input anode be connected, the input negative electrode of photoelectrical coupler IC1 is connected with the upper end of R2, described power cathode VSS and R2
Lower end be connected, the lower end of institute resistance R3 is connected with the colelctor electrode of photoelectrical coupler C1, the emitter stage of photoelectrical coupler IC1 and list
It is connected to the trigger electrode G of controllable silicon BT1, the described intermediate ends of series circuit BT1, R4 are connected with the base stage of IGBT module BG1, institute
The other end of the emitter stage and R4 of stating IGBT module BG1 is connected.
A kind of described direct current high-velocity electrons insurance circuit is it is characterised in that the model of described photoelectrical coupler IC1 is adopted
Use PC817.
A kind of described direct current high-velocity electrons insurance circuit is it is characterised in that the model of described one-way SCR BT1 is adopted
Use 50RIA120.
A kind of described direct current high-velocity electrons insurance circuit is it is characterised in that the model of described IGBT module BG1 adopts
G40N150D.
Beneficial effect is that the resistance that the present invention passes through to change sample resistance R4 can achieve that the load equipment to different capacity uses,
Meanwhile, the present invention has that structure is simple, and with low cost, power is big, fast response time and practical and convenient.
Brief description
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is the circuit theory diagrams of the present invention.
Specific embodiment
For making technological means that the present invention realizes, creation characteristic, being easy to understand with function with reaching mesh, with reference to
It is specifically illustrating, the present invention is expanded on further.
Referring to Fig. 1, this direct current high-velocity electrons insurance circuit, constitute including start-up circuit (1), current foldback circuit (2), institute
State start-up circuit (1) to be electrically connected with current foldback circuit (2).
Described start-up circuit (1) is made up of R1, R2, R3, C1, IC1.
Described current foldback circuit (2) is made up of BT1, BG1, R4.
Referring to Fig. 2, a kind of described direct current high-velocity electrons insurance circuit it is characterised in that：Described positive source VCC with
R1, C1, R3, the anode A of one-way SCR BT1, the colelctor electrode of IGBT module BG1 are connected, the lower end of described parallel circuit R, 1C1
It is connected with the input anode of photoelectrical coupler IC1, the input negative electrode of photoelectrical coupler IC1 is connected with the upper end of R2, described
Power cathode VSS is connected with the lower end of R2, and the lower end of institute resistance R3 is connected with the colelctor electrode of photoelectrical coupler C1, photoelectrical coupler
The emitter stage of IC1 is connected with the trigger electrode G of one-way SCR BT1, the intermediate ends of described series circuit BT1, R4 and IGBT module
The base stage of BG1 is connected, and the emitter stage of described IGBT module BG1 is connected with the other end of R4.
During upper electricity, electric current passes through the anode through photoelectrical coupler IC1 input light emitting diode for the C1 and is grounded shape through resistance R2
Become current loop that electric capacity C1 is charged, photoelectrical coupler IC1 outfan colelctor electrode is turned on emitter stage, described positive source
VCC provides trigger current to make one-way SCR mould BT1 the trigger electrode G of one-way SCR mould BT1 through resistance R3, photoelectrical coupler
Sampled resistance provides working power to load.When short circuit or overcurrent in load, sample resistance two ends produce rapidly voltage
Difference is directed at the conducting of IGBT module BG1, and now overcurrent provides power supply through IGBT module BG1 to load, now unidirectional controlled
Silicon mould BT1 end the base stage decompression of IGBT module BG1 simultaneously because losing trigger voltage and end shutoff output voltage complete whole
Overcurrent protection process, reaches the safety of protection equipment.
Ultimate principle and principal character and the advantages of the present invention of the present invention, the technology of the industry have been shown and described above
, it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description is originally for personnel
The principle of invention, without departing from the spirit and scope of the invention, the present invention also has various changes and modifications, and these change and change
Enter and both fall within the range of claimed invention, claimed scope is by appending claims and its equivalent circle.
Fixed.
Claims (7)
1. a kind of direct current high-velocity electrons insurance circuit, is made up of start-up circuit (1), current foldback circuit (2), described start-up circuit
(1) it is electrically connected with current foldback circuit (2).
2. as claimed in claim 1 a kind of direct current high-velocity electrons insurance circuit it is characterised in that：Described start-up circuit (1)
It is made up of R1, R2, R3, C1, IC1.
3. as claimed in claim 1 a kind of direct current high-velocity electrons insurance circuit it is characterised in that：Described current foldback circuit
(2) by BT1, BG1, R4 forms.
4. a kind of direct current high-velocity electrons insurance circuit as described in claim 1,2 it is characterised in that：Described positive source
VCC is connected with the colelctor electrode of R1, C1, R3, the anode A of one-way SCR BT1, IGBT module BG1, described parallel circuit R, 1C1
Lower end be connected with the input anode of photoelectrical coupler IC1, the input negative electrode of photoelectrical coupler IC1 and the upper end phase of R2
Even, described power cathode VSS is connected with the lower end of R2, and the lower end of institute resistance R3 is connected with the colelctor electrode of photoelectrical coupler IC1, light
The emitter stage of electric coupler IC1 is connected with the trigger electrode G of one-way SCR BT1, the intermediate ends of described series circuit BT1, R4 with
The base stage of IGBT module BG1 is connected, and the emitter stage of described IGBT module BG1 is connected with the other end of R4.
5. as claimed in claim 4 a kind of direct current high-velocity electrons insurance circuit it is characterised in that described photoelectrical coupler IC1
Model adopt PC817.
6. as claimed in claim 4 a kind of direct current high-velocity electrons insurance circuit it is characterised in that described one-way SCR BT1
Model adopt 50RIA120.
7. as claimed in claim 4 a kind of direct current high-velocity electrons insurance circuit it is characterised in that described IGBT module BG1
Model adopts G40N150D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610953608.5A CN106410742A (en) | 2016-11-03 | 2016-11-03 | High-speed DC electronic fuse circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610953608.5A CN106410742A (en) | 2016-11-03 | 2016-11-03 | High-speed DC electronic fuse circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106410742A true CN106410742A (en) | 2017-02-15 |
Family
ID=58014344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610953608.5A Pending CN106410742A (en) | 2016-11-03 | 2016-11-03 | High-speed DC electronic fuse circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106410742A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909729Y (en) * | 2006-03-17 | 2007-06-06 | 海信集团有限公司 | Power supply soft start-up circuit and TV. set with the soft start-up circuit |
| CN201644995U (en) * | 2009-10-16 | 2010-11-24 | 无锡市南方电器制造有限公司 | IGBT inverting-type gas-shielded welder welding starting circuit |
| CN101902183A (en) * | 2010-08-27 | 2010-12-01 | 贵州凯里经济开发区中昊电子有限公司 | Method and device for controlling motor start-up |
| CN101980408A (en) * | 2010-12-03 | 2011-02-23 | 天津诺尔哈顿电器制造有限公司 | Overcurrent protection circuit |
| CN102025122A (en) * | 2009-09-18 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Protective circuit |
| CN102751697A (en) * | 2012-07-25 | 2012-10-24 | 周芸 | Direct-current power supply over-current fuse wire |
| CN102983545A (en) * | 2012-12-05 | 2013-03-20 | 刘德军 | Direct current (DC) overcurrent protection device |
-
2016
- 2016-11-03 CN CN201610953608.5A patent/CN106410742A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909729Y (en) * | 2006-03-17 | 2007-06-06 | 海信集团有限公司 | Power supply soft start-up circuit and TV. set with the soft start-up circuit |
| CN102025122A (en) * | 2009-09-18 | 2011-04-20 | 鸿富锦精密工业（深圳）有限公司 | Protective circuit |
| CN201644995U (en) * | 2009-10-16 | 2010-11-24 | 无锡市南方电器制造有限公司 | IGBT inverting-type gas-shielded welder welding starting circuit |
| CN101902183A (en) * | 2010-08-27 | 2010-12-01 | 贵州凯里经济开发区中昊电子有限公司 | Method and device for controlling motor start-up |
| CN101980408A (en) * | 2010-12-03 | 2011-02-23 | 天津诺尔哈顿电器制造有限公司 | Overcurrent protection circuit |
| CN102751697A (en) * | 2012-07-25 | 2012-10-24 | 周芸 | Direct-current power supply over-current fuse wire |
| CN102983545A (en) * | 2012-12-05 | 2013-03-20 | 刘德军 | Direct current (DC) overcurrent protection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |
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| WD01 | Invention patent application deemed withdrawn after publication |