CN201813148U - Low-voltage DC power port protector - Google Patents
Low-voltage DC power port protector Download PDFInfo
- Publication number
- CN201813148U CN201813148U CN2010205508050U CN201020550805U CN201813148U CN 201813148 U CN201813148 U CN 201813148U CN 2010205508050 U CN2010205508050 U CN 2010205508050U CN 201020550805 U CN201020550805 U CN 201020550805U CN 201813148 U CN201813148 U CN 201813148U
- Authority
- CN
- China
- Prior art keywords
- rectifier bridge
- power
- insurance
- rear end
- behind
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a low-voltage DC power port protector. A power input end is connected with a rectifier bridge; a power anode output end and a power cathode output end of the rectifier bridge are connected with 3 anode ends and cathode ends in series respectively, wherein the 3 anode ends and cathode ends are connected with a low-voltage power output end after realizing self-healing insurance; a gas discharge tube is connected in parallel between a first-level self-healing insurance rear end behind the power anode output end of the rectifier bridge and a first-level self-healing insurance rear end behind the power cathode output end of the rectifier bridge; a piezoresistor is connected in parallel between a second-level self-healing insurance rear end behind the power anode output end of the rectifier bridge and a second-level self-healing insurance rear end behind the power cathode output end of the rectifier bridge; and a transient suppression diode is connected in parallel between a third-level self-healing insurance rear end behind the power anode output end of the rectifier bridge and a third-level self-healing insurance rear end behind the power cathode output end of the rectifier bridge. In the protector disclosed by the utility model, as a three-level surge and group pulse suppression scheme is adopted and multiple groups of self-healing insurance are combined at the same time, the electrical appliance damage caused by wrong voltage connection and lightning stroke can be effectively prevented, and a remarkably good effect in suppressing rapid pulse group is realized at the same time.
Description
Technical field:
The utility model relates to a kind of low-voltage dc power supply port protection device, and it has characteristics such as anti-voltage wrong, fast-pulse group inhibition, surge inhibition.
Background technology:
In recent years, along with exploding of electronic product, the supply power mode of power consumption equipment is also various day by day.For convenience of user's use, stop the situation of product wrong electricity, producer tends to design difform power connection; But, be difficult to design general interface for off-gauge electrical appliance.Often just need when preventing that the weak current equipment misconnection from going into forceful electric power a kind of equipment play the effect that protection is isolated; For the equipment of direct current supply, in the time of the incoming transport power supply, also should play a protective role equally.The current servo motor, equipment such as frequency converter generally use in field of machining, these equipment severe contaminations the power supply of working region.Cause the electrical appliance operation irregularity through regular meeting, particularly the light current DC equipment influences even more serious.
Summary of the invention:
The purpose of this utility model provides a kind of low-voltage dc power supply port protection device, prevents that the electrical appliance that voltage wrong, thunderbolt etc. cause from damaging, and also fast-pulse group's inhibition is had extraordinary effect simultaneously.
The purpose of this utility model realizes as follows: power input connects rectifier bridge, makes the electrical appliance operate as normal when can guarantee the reversal connection of DC power supply both positive and negative polarity, plays a protective role when going into AC power for misconnection simultaneously; 3 positive terminals that after recovering insurance, connect the low-tension supply output of positive source output serial connection of rectifier bridge, 3 negative pole ends that after recovering insurance, connect the low-tension supply output of power cathode output serial connection; The first order from recovering between the insurance rear end and connecing gas discharge tube, is primarily aimed at the access of bigger abnormal voltage from the first order behind the power cathode output that recovers insurance rear end and rectifier bridge behind the positive source output of rectifier bridge; The second level, mainly remedies the remaining energy of gas discharge tube and discharges incomplete defective from recovering between the insurance rear end and connecing piezo-resistance from the second level behind the power cathode output that recovers insurance rear end and rectifier bridge behind the positive source output of rectifier bridge; Behind the positive source output of rectifier bridge the third level behind the power cathode output that recovers insurance rear end and rectifier bridge the third level from recovering to insure between the rear end and connecing Transient Suppression Diode (TVS pipe), the reaction time of having improved the Global Macros circuit.
When the transient state abnormal voltage produced, the TVS pipe was worked at first; If abnormal voltage is longer turn-on time, such as the surge thunderbolt, piezo-resistance, gas discharge tube work at this moment, the impulse current of releasing effectively.
When the abnormal voltage that continues inserts, in the time of TVS pipe, piezo-resistance, gas discharge tube earial drainage, recover the instantaneous increase of insurance electric current certainly, according to size of current, three groups are recovered insurance action successively certainly, can cut off abnormal voltage effectively, have protected internal circuit; When voltage recovers just often, recover insurance certainly and connect, make equipment enter normal operating conditions.
The utility model uses three grades of surges, burst of pulses to suppress scheme, and the while from the recovery insurance, can effectively prevent that the electrical appliance that voltage wrong, thunderbolt cause from damaging in conjunction with many groups, and the inhibition to the fast-pulse group simultaneously also has extraordinary effect.
Description of drawings:
Accompanying drawing is a circuit diagram of the present utility model.
Embodiment:
With reference to accompanying drawing, power input JP1 meets rectifier bridge D1,3 positive terminals that after recovering insurance F1, F2, F3, meet low-tension supply output JP of the positive source output serial connection of rectifier bridge D1,3 negative pole ends that after recovering insurance F4, F5, F6, meet low-tension supply output JP2 of power cathode output serial connection; Behind the positive source output of rectifier bridge D1 the first order behind the power cathode output that recovers insurance F1 rear end and rectifier bridge D1 the first order from recovering to insure between the F4 rear end and meeting gas discharge tube DS1; Behind the positive source output of rectifier bridge D1 the second level behind the power cathode output that recovers insurance F2 rear end and rectifier bridge D1 the second level from recovering to insure between the F5 rear end and meeting piezo-resistance R1; Behind the positive source output of rectifier bridge D1 the third level behind the power cathode output that recovers insurance F3 rear end and rectifier bridge D1 the third level from recovering to insure between the F6 rear end and meeting Transient Suppression Diode TD1.
Claims (1)
1. low-voltage dc power supply port protection device, it is characterized in that: power input (JP1) connects rectifier bridge (D1), 3 positive terminals that after recovering insurance (F1, F2, F3), meet low-tension supply output (JP2) of positive source output serial connection of rectifier bridge (D1), 3 negative pole ends that after recovering insurance (F4, F5, F6), meet low-tension supply output (JP2) of power cathode output serial connection; Behind the positive source output of rectifier bridge (D1) first order behind the power cathode output that recovers insurance (F1) rear end and rectifier bridge (D1) first order from recovering to insure between (F4) rear end and connecing gas discharge tube (DS1); Behind the positive source output of rectifier bridge (D1) second level behind the power cathode output that recovers insurance (F2) rear end and rectifier bridge (D1) second level from recovering to insure between (F5) rear end and connecing piezo-resistance (R1); Behind the positive source output of rectifier bridge (D1) third level behind the power cathode output that recovers insurance (F3) rear end and rectifier bridge (D1) third level from recovering to insure between (F6) rear end and connecing Transient Suppression Diode (TD1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205508050U CN201813148U (en) | 2010-09-28 | 2010-09-28 | Low-voltage DC power port protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205508050U CN201813148U (en) | 2010-09-28 | 2010-09-28 | Low-voltage DC power port protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201813148U true CN201813148U (en) | 2011-04-27 |
Family
ID=43896086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205508050U Expired - Fee Related CN201813148U (en) | 2010-09-28 | 2010-09-28 | Low-voltage DC power port protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201813148U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140334047A1 (en) * | 2013-05-13 | 2014-11-13 | Lsis Co., Ltd. | Self-power circuit for protecting relay |
| CN107076833A (en) * | 2014-11-26 | 2017-08-18 | 霍尼韦尔国际公司 | Essential safety with series connection block-condenser obstructs circuit |
| US11277002B2 (en) | 2019-05-13 | 2022-03-15 | Mersen Usa Ep Corp. | Surge protection device for the protection of multiple DC or AC power lines |
-
2010
- 2010-09-28 CN CN2010205508050U patent/CN201813148U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140334047A1 (en) * | 2013-05-13 | 2014-11-13 | Lsis Co., Ltd. | Self-power circuit for protecting relay |
| CN107076833A (en) * | 2014-11-26 | 2017-08-18 | 霍尼韦尔国际公司 | Essential safety with series connection block-condenser obstructs circuit |
| US11277002B2 (en) | 2019-05-13 | 2022-03-15 | Mersen Usa Ep Corp. | Surge protection device for the protection of multiple DC or AC power lines |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202333771U (en) | Power protection circuit and engineering machine | |
| CN201813153U (en) | Anti-surging device of high-performance serial port | |
| CN201846058U (en) | Over-voltage/over-current protecting circuit | |
| CN201813148U (en) | Low-voltage DC power port protector | |
| CN107947557B (en) | Soft start circuit for resisting overvoltage and undervoltage surges | |
| CN103475238A (en) | Voltage conversion circuit | |
| CN101976815A (en) | Loaded multifunctional protection circuit | |
| CN202190050U (en) | Direct-current over-voltage and over-current protective circuit and direct-current power supply type electronic product | |
| CN102882181A (en) | Reverse protection and overvoltage protection circuit based on bidirectional silicon-controlled thyristor | |
| CN201716965U (en) | LED backlight protection circuit | |
| CN202712837U (en) | Input DC anti-peak and overvoltage surge circuit | |
| CN204992567U (en) | Lightning protection circuit | |
| CN209217706U (en) | Surge current suppression circuit | |
| CN202550509U (en) | Lightning protection device for power supply | |
| CN202856306U (en) | Reverse connection protection and overvoltage protection circuit based on bidirectional silicon controlled rectifier | |
| CN105048433A (en) | Surge protection design method for DC-DC power supply | |
| CN203839941U (en) | Two-wire system instrument surge protection circuit | |
| CN204347175U (en) | A kind of lightning current HF reject device with monitoring function | |
| CN204928112U (en) | Direct current surge suppression circuit and DC power supply power supply system | |
| CN203617697U (en) | Earth fault detection protecting circuit of photovoltaic assembly | |
| CN203326557U (en) | Under-voltage and over-voltage safety protection circuit of modem | |
| CN201584767U (en) | Video and monitoring multi-functional surge protection device | |
| CN209200686U (en) | One kind being applied to engineering machinery electronics electrical equipment on line type UPS system | |
| CN219739961U (en) | Lightning protection circuit | |
| CN103280794A (en) | Surging resistant and reverse-connection resistant port |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |