CN2376685Y - Power source protective module - Google Patents
Power source protective module Download PDFInfo
- Publication number
- CN2376685Y CN2376685Y CN 99217972 CN99217972U CN2376685Y CN 2376685 Y CN2376685 Y CN 2376685Y CN 99217972 CN99217972 CN 99217972 CN 99217972 U CN99217972 U CN 99217972U CN 2376685 Y CN2376685 Y CN 2376685Y
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode thyristor
- bidirectional triode
- electric capacity
- wire
- 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
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Abstract
The utility model discloses an over-voltage protection device-a power source protective module which is applied to the over-voltage protection of electric equipment, and is formed by assembling a bidirectional thyristor, a diode, a varistor, a capacitor and a resistor. The utility model has the functions of cutting off accidental power in time to protect electric appliances when the voltage of power supply rises and filtering interference in circuits.
Description
The utility model relates to security personnel's device of electrician, electronic applications, specifically a kind of power protection module.Be applicable to the overvoltage protection of electrical equipment, electronic equipment, and have anti-interference function.
Along with popularizing of power consumption equipment, overvoltage protection more and more causes people's attention.Number of patent application 94211755.7 once disclosed a kind of compound overvoltage protector.This protector is formed an independent protection element with a bidirectional triode thyristor, a piezo-resistance and a diode, and filter capacitor of increase is realized overvoltage protection and anti-interference function in The Trigger of Bidirectional Triode Thyristor utmost point branch road.Simple in structure, practical.But this protector is a three-terminal element, installs and uses inconvenience.And still can not satisfy the requirement of circuit safety steady operation to the pulse in the circuit and surge voltage interference free performance.
The purpose of this utility model is to release the power protection module of a kind of stable work in work, strong anti-interference performance, to satisfy the needs of overvoltage protection.
Task of the present utility model is achieved in that between the trigger electrode of bidirectional triode thyristor 1 and the first anode and connects an electric capacity 4.Between the bidirectional triode thyristor first anode and second plate and connect a buffering branch road of forming by resistance 5 and electric capacity 6 serial connection backs, also can connect between the first anode of that end of lead-in wire 9 and bidirectional triode thyristor 1 and the buffering branch road of forming after connecing by above-mentioned resistance 5 and electric capacity 6 serial connections at resistance 7.
The second plate of bidirectional triode thyristor can connect the positive pole of diode 2, the negative pole of diode 2 connects an end of piezo-resistance 3, another termination silicon controlled trigger electrode of described piezo-resistance 3, two ends of electric capacity 4 are attempted by between the The Trigger of Bidirectional Triode Thyristor utmost point and the first anode, one termination silicon controlled second plate of resistance 5, one end of another termination capacitor 6 of described resistance 5, another termination controllable silicon first anode of electric capacity 6, the controllable silicon first anode connects lead-in wire 8, and the bidirectional triode thyristor second plate connects lead-in wire 9 by resistance 7.
Also can carry out circuit by following mode connects: an end of controllable silicon second plate connecting resistance 7, the positive pole of another terminating diode of resistance 7, the negative pole of diode connects an end of piezo-resistance, another termination silicon controlled trigger electrode of described piezo-resistance, two ends of electric capacity 4 are attempted by between the silicon controlled trigger electrode and the first anode, that end of the connection lead-in wire 9 of one terminating resistor 7 of resistance 5, one end of another termination capacitor 6 of resistance 5, another termination silicon controlled first anode of electric capacity 6, the silicon controlled first anode connect lead-in wire 8.
The piezo-resistance that selected parameter is suitable makes it be in cut-off state under normal working voltage, does not have trigger current, and bidirectional triode thyristor ends, and protective circuit is not worked, the power supply normal power supply.When supply voltage is elevated to the magnitude of voltage that needs protection, the piezo-resistance conducting, the bidirectional triode thyristor conducting that is triggered forms short circuit, and electrical appliance has been protected in the blowout current insurance.The pulse that produces in the power supply and surge by and the electric capacity between the bidirectional triode thyristor trigger electrode G and the first anode and and R.C buffering branch road between the bidirectional triode thyristor second plate and the first anode filter so that the reliable and stable work of overvoltage crowbar.
The specification that the utility model only need change piezo-resistance, diode, bidirectional triode thyristor, resistance, electric capacity just can be developed into the AC and DC series of products of the different overvoltage protection values of different through-current capacities.
The utility model is packaged into a module to bidirectional triode thyristor, diode, piezo-resistance, electric capacity, resistance, lead-in wire with insulating material.
Characteristics of the present utility model and effect are power protection module integrated level height, have only two lead-in wires, not polarity, do not need peripheral circuit, install and use simple, strong anti-interference performance, can be in circuit stable work.
Embodiment of the present utility model is provided by following accompanying drawing:
Fig. 1 is first embodiment of the present utility model.
Fig. 2 is second embodiment of the present utility model.
Fig. 3 is the 3rd embodiment of the present utility model.
Fig. 4 is an outline drawing of the present utility model.
As shown in Figure 1,1 is that bidirectional triode thyristor, 2 insures for electric current for lead-in wire, 9 for lead-in wire, 8 for electric capacity, 7 for resistance, 6 for electric capacity, 5 for piezo-resistance, 4 for diode, 3.In Fig. 2,3, increase resistance 7, and 8 for lead-in wire, 9 for lead-in wire, 10 be power safety.
During manufacturing, can be with the second plate T of bidirectional triode thyristor 1
2Connect the positive pole of diode 2, the negative pole of diode 2 connects an end of piezo-resistance 3, and the trigger electrode G of another termination bidirectional triode thyristor 1 of piezo-resistance 3, two ends of electric capacity 4 are attempted by the trigger electrode G and the first anode T of bidirectional triode thyristor 1
1Between.One end of resistance 5 can meet the second plate T of bidirectional triode thyristor 1
2, an end of another termination capacitor 6, the first anode T of another termination bidirectional triode thyristor of electric capacity 6
1Bidirectional triode thyristor first anode T
1Connect lead-in wire 8.Bidirectional triode thyristor second plate T
2Connecting resistance 7.Also can be at bidirectional triode thyristor second plate connecting resistance 7, then at the positive pole of another terminating diode of resistance 7, the negative pole of diode connects an end of piezo-resistance 3, the trigger electrode G of another termination bidirectional triode thyristor 1 of piezo-resistance 3, two ends of electric capacity 4 are attempted by the trigger electrode G and the first anode T of bidirectional triode thyristor 1
1Between.One terminating resistor 7 of resistance 5 connects that end of lead-in wire 9, an end of another termination capacitor 6, the first anode T of another termination bidirectional triode thyristor of electric capacity 6
1Bidirectional triode thyristor first anode T
1Connect lead-in wire 8, the second plate T of bidirectional triode thyristor
2Connecting resistance 7.With the above element that welds, carry out insulator seal and dress up a module.During use electric current insurance 10 is serially connected in the power circuit, will go between 8, lead-in wire 9 is attempted by electric current and insures load two ends after 10.When supply voltage just often, piezo-resistance 3 is ended, and does not have trigger current.Pulse surge in the circuit disturbs the anti-interference loop of being formed by electric capacity 4, resistance 5 and electric capacity 6 to filter.Bidirectional triode thyristor ends, the power supply normal power supply.When raising for some reason, supply voltage reaches protection during magnitude of voltage, piezo-resistance 3 conductings.Bidirectional triode thyristor 1 conducting that is triggered.Form short circuit.Electric current insurance 10 fusing.Cut off emergency power supply, protected electrical appliance.From Fig. 2,3, can see; the main distinction of second, third embodiment and first embodiment is to have increased a resistance 7; its objective is in order when controllable silicon moves, to realize the silicon controlled overcurrent protection by the resistance 7 that increases; thereby guarantee that this power protection module is long-term, stable, safe, work reliably that this is one of advantage of the present utility model just.
Claims (6)
1. power protection module, this power protection module comprises bidirectional triode thyristor (1), diode (2), piezo-resistance (3), electric capacity (4), resistance (5), electric capacity (6), resistance (7); It is characterized in that: one of electric capacity (4) terminates on the trigger electrode G of bidirectional triode thyristor (1), and the other end of electric capacity (4) is connected on bidirectional triode thyristor first anode T
1On, the second plate T of bidirectional triode thyristor
2One end of connecting resistance (7), another termination lead-in wire (9) of resistance (7).
2. power protection module as claimed in claim 1 is characterized in that: at the first anode T of bidirectional triode thyristor (1)
1With second plate T
2Between and the buffering branch road then then formed by resistance (5) and electric capacity (6) serial connection.
3. power protection module as claimed in claim 1 is characterized in that: meet that end of lead-in wire 9 and the first anode T of bidirectional triode thyristor (1) at resistance (7)
1Between, and the buffering branch road of then forming by resistance (5) and electric capacity (6) serial connection back.
4. power protection module according to claim 1 is characterized in that: the second plate T of bidirectional triode thyristor (1)
2Connect the positive pole of diode (2), the negative pole of diode (2) connects an end of piezo-resistance (3), the trigger electrode G of another termination bidirectional triode thyristor (1) of described piezo-resistance (3), two ends of electric capacity (4) are attempted by the trigger electrode G and the first anode T of bidirectional triode thyristor (1)
1Between, the second plate T of a termination bidirectional triode thyristor (1) of resistance (5)
2, an end of another termination capacitor (6), the first anode T of another termination bidirectional triode thyristor (1) of electric capacity (6)
1, the first anode T of bidirectional triode thyristor (1)
1Connect lead-in wire (8), the second plate T of bidirectional triode thyristor (1)
2Connect lead-in wire (9) by resistance (7).
5. power protection module as claimed in claim 1 is characterized in that: the second plate T of bidirectional triode thyristor (1)
2Connecting resistance (7) one ends, the positive pole of another terminating diode (2) of resistance (7), the negative pole of diode (2) connects an end of piezo-resistance (3), the trigger electrode G of another termination bidirectional triode thyristor (1) of described piezo-resistance (3), two ends of electric capacity (4) are attempted by the trigger electrode G and the first anode T of bidirectional triode thyristor (1)
1Between, that end of the connection lead-in wire (9) of a terminating resistor (7) of resistance (5), an end of another termination capacitor (6) of resistance (5), the first anode T of another termination bidirectional triode thyristor (1) of electric capacity (6)
1, the first anode T of bidirectional triode thyristor (1)
1Connect lead-in wire (8).
6. as claim 1,2 described power protection modules; it is characterized in that: bidirectional triode thyristor (1), diode (2), piezo-resistance (3), electric capacity (4), resistance (5), electric capacity (6), resistance (7), lead-in wire (8), lead-in wire (9) are encapsulated in the module with the insulation fire proofing, and lead-in wire (8) and lead-in wire (9) expose outside module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99217972 CN2376685Y (en) | 1999-07-22 | 1999-08-16 | Power source protective module |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99217125 | 1999-07-22 | ||
| CN99217125.3 | 1999-07-22 | ||
| CN 99217972 CN2376685Y (en) | 1999-07-22 | 1999-08-16 | Power source protective module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2376685Y true CN2376685Y (en) | 2000-05-03 |
Family
ID=34066125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99217972 Expired - Fee Related CN2376685Y (en) | 1999-07-22 | 1999-08-16 | Power source protective module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2376685Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378187B (en) * | 2007-08-29 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit |
| CN107453372A (en) * | 2017-07-03 | 2017-12-08 | 国网山东省电力公司济宁供电公司 | A kind of fast failure current-limiting apparatus and current-limiting method |
| CZ307422B6 (en) * | 2017-03-15 | 2018-08-08 | Saltek S.R.O. | A voltage limiter with overvoltage protection |
-
1999
- 1999-08-16 CN CN 99217972 patent/CN2376685Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378187B (en) * | 2007-08-29 | 2012-07-18 | 鸿富锦精密工业（深圳）有限公司 | Power supply protection circuit |
| CZ307422B6 (en) * | 2017-03-15 | 2018-08-08 | Saltek S.R.O. | A voltage limiter with overvoltage protection |
| CN110475690A (en) * | 2017-03-15 | 2019-11-19 | 沙尔特克有限公司 | Voltage limitator with overvoltage protection |
| CN110475690B (en) * | 2017-03-15 | 2023-02-21 | 沙尔特克有限公司 | Voltage limiter with overvoltage protection |
| CN107453372A (en) * | 2017-07-03 | 2017-12-08 | 国网山东省电力公司济宁供电公司 | A kind of fast failure current-limiting apparatus and current-limiting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |