CN204030573U - The anti-overvoltage circuit of a kind of alternating current - Google Patents
The anti-overvoltage circuit of a kind of alternating current Download PDFInfo
- Publication number
- CN204030573U CN204030573U CN201420181678.XU CN201420181678U CN204030573U CN 204030573 U CN204030573 U CN 204030573U CN 201420181678 U CN201420181678 U CN 201420181678U CN 204030573 U CN204030573 U CN 204030573U
- Authority
- CN
- China
- Prior art keywords
- resistance
- diode
- capacitor
- voltage
- triode
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a kind of alternating current anti-overvoltage circuit, comprise resistance R 1, one end of resistance R 1 is connected with an input of AC power and one end of capacitor C 1, the other end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the negative pole of diode D3, the other end of resistance R 2 is connected with the positive pole of diode D2, one end of the negative pole of diode D2 and capacitor C 2, the negative pole of voltage-stabiliser tube D4, one end of resistance R 5, one end of resistance R 4 is connected with one end of resistance R 3, another input of the positive pole of diode D3 and AC power, the other end of capacitor C 2, the positive pole of voltage-stabiliser tube D4, one end of resistance W1, one end of resistance R 6, one end of capacitor C 3 is connected with one end of load.The utility model can prevent that alternating voltage is too high and cause the damage of electrical appliance.
Description
Technical field
The utility model relates to the anti-overvoltage circuit of a kind of alternating current.
Background technology
Easily there is the damage of electrical appliance in existing civil power, thereby cause user's loss or personnel's injury in the situation that of electric voltage over press, based on this, is necessary to design the rising that a kind of circuit prevents alternating voltage.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of alternating current anti-overvoltage circuit, solves the problem that existing line voltage can cause electrical appliance to damage when raising.
The utility model is achieved in that
The anti-overvoltage circuit of a kind of alternating current, comprise resistance R 1, one end of resistance R 1 is connected with an input of AC power and one end of capacitor C 1, the other end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the negative pole of diode D3, the other end of resistance R 2 is connected with the positive pole of diode D2, one end of the negative pole of diode D2 and capacitor C 2, the negative pole of voltage-stabiliser tube D4, one end of resistance R 5, one end of resistance R 4 is connected with one end of resistance R 3, another input of the positive pole of diode D3 and AC power, the other end of capacitor C 2, the positive pole of voltage-stabiliser tube D4, one end of resistance W1, one end of resistance R 6, one end of capacitor C 3 is connected with one end of load, the other end of resistance R 5 is connected with the negative pole of voltage-stabiliser tube D5, the positive pole of voltage-stabiliser tube D5 is connected with the base stage of triode Q1 with one end of resistance W1, the collector electrode of triode Q1 is connected with the base stage of triode Q2 with the other end of resistance R 4, the collector electrode of triode Q2 is connected with the other end of resistance R 3, the emitter of triode Q1 is connected with the other end of resistance R 6, the emitter of triode Q2 is connected with one end of resistance R 7 with the other end of capacitor C 3, the other end of resistance R 7 is connected with the G utmost point of bidirectional trigger diode D6, the T1 utmost point of bidirectional trigger diode D6 is connected with the positive pole of diode D1 with an input of AC power, the negative pole of diode D1 is connected with the T2 utmost point of bidirectional trigger diode D6 and the other end of load.
The utility model has the advantage of: thus can when raising, voltage discharge the damage that too high voltage is avoided electrical appliance in time.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Refer to shown in Fig. 1, the anti-overvoltage circuit of a kind of alternating current, comprise resistance R 1, one end of resistance R 1 is connected with an input of AC power and one end of capacitor C 1, the other end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the negative pole of diode D3, the other end of resistance R 2 is connected with the positive pole of diode D2, one end of the negative pole of diode D2 and capacitor C 2, the negative pole of voltage-stabiliser tube D4, one end of resistance R 5, one end of resistance R 4 is connected with one end of resistance R 3, another input of the positive pole of diode D3 and AC power, the other end of capacitor C 2, the positive pole of voltage-stabiliser tube D4, one end of resistance W1, one end of resistance R 6, one end of capacitor C 3 is connected with one end of load, the other end of resistance R 5 is connected with the negative pole of voltage-stabiliser tube D5, the positive pole of voltage-stabiliser tube D5 is connected with the base stage of triode Q1 with one end of resistance W1, the collector electrode of triode Q1 is connected with the base stage of triode Q2 with the other end of resistance R 4, the collector electrode of triode Q2 is connected with the other end of resistance R 3, the emitter of triode Q1 is connected with the other end of resistance R 6, the emitter of triode Q2 is connected with one end of resistance R 7 with the other end of capacitor C 3, the other end of resistance R 7 is connected with the G utmost point of bidirectional trigger diode D6, the T1 utmost point of bidirectional trigger diode D6 is connected with the positive pole of diode D1 with an input of AC power, the negative pole of diode D1 is connected with the T2 utmost point of bidirectional trigger diode D6 and the other end of load.The load of take below describes as resistance R 8.
Operation principle of the present utility model is: when civil power is inputted as AC power, the phase place of AC power when first positive period, diode D1 conducting, resistance R 8 both end voltage of load are about the voltage of AC power.Simultaneously, after the filter rectifier that AC power is comprised of capacitor C 1, C2 and diode D2, voltage-stabiliser tube D4 at diode D2 negative pole output dc voltage, make triode Q2 in conducting state, the electric current of circuit is through triode Q2, charge to capacitor C 3, the voltage when capacitor C 3 two ends rises, until trigger the G utmost point of bidirectional trigger diode D6, make bidirectional trigger diode D6 conducting, AC power is normally worked.
When if the voltage transient of AC power improves.The voltage of load R8 end increases, the direct voltage of the filter rectifier output now forming from capacitor C 1, C2 and diode D2, voltage-stabiliser tube D4 be greater than voltage-stabiliser tube D5 oppositely hit withstand voltage numerical value time, voltage-stabiliser tube D5 is reversed and punctures.Now the base voltage of triode Q1 improves, and then conducting, makes triode Q2 cut-off, triggers bidirectional trigger diode D6 and disconnects, and AC power discharges unnecessary voltage by resistance R 1, thereby avoid AC power, is the overtension of load in resistance R 8.
The above execution mode, it is better embodiment of the present utility model, be not to limit the utility model practical range, the equivalence of doing according to structure, feature and principle described in the utility model claim therefore all changes or modifies, and all should comprise in the utility model patent claim.
Claims (1)
1. the anti-overvoltage circuit of alternating current, it is characterized in that: comprise resistance R 1, one end of resistance R 1 is connected with an input of AC power and one end of capacitor C 1, the other end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the negative pole of diode D3, the other end of resistance R 2 is connected with the positive pole of diode D2, one end of the negative pole of diode D2 and capacitor C 2, the negative pole of voltage-stabiliser tube D4, one end of resistance R 5, one end of resistance R 4 is connected with one end of resistance R 3, another input of the positive pole of diode D3 and AC power, the other end of capacitor C 2, the positive pole of voltage-stabiliser tube D4, one end of resistance W1, one end of resistance R 6, one end of capacitor C 3 is connected with one end of load, the other end of resistance R 5 is connected with the negative pole of voltage-stabiliser tube D5, the positive pole of voltage-stabiliser tube D5 is connected with the base stage of triode Q1 with one end of resistance W1, the collector electrode of triode Q1 is connected with the base stage of triode Q2 with the other end of resistance R 4, the collector electrode of triode Q2 is connected with the other end of resistance R 3, the emitter of triode Q1 is connected with the other end of resistance R 6, the emitter of triode Q2 is connected with one end of resistance R 7 with the other end of capacitor C 3, the other end of resistance R 7 is connected with the G utmost point of bidirectional trigger diode D6, the T1 utmost point of bidirectional trigger diode D6 is connected with the positive pole of diode D1 with an input of AC power, the negative pole of diode D1 is connected with the T2 utmost point of bidirectional trigger diode D6 and the other end of load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181678.XU CN204030573U (en) | 2014-04-15 | 2014-04-15 | The anti-overvoltage circuit of a kind of alternating current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181678.XU CN204030573U (en) | 2014-04-15 | 2014-04-15 | The anti-overvoltage circuit of a kind of alternating current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030573U true CN204030573U (en) | 2014-12-17 |
Family
ID=52070401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181678.XU Expired - Fee Related CN204030573U (en) | 2014-04-15 | 2014-04-15 | The anti-overvoltage circuit of a kind of alternating current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030573U (en) |
-
2014
- 2014-04-15 CN CN201420181678.XU patent/CN204030573U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203951384U (en) | A kind of inverter circuit of solar energy | |
| CN103475200A (en) | Anti-surge circuit | |
| CN205160363U (en) | Auxiliary power supply circuit and switching power supply | |
| CN103607109A (en) | Power-supply soft-start circuit | |
| CN104779577B (en) | A kind of current foldback circuit | |
| CN204030573U (en) | The anti-overvoltage circuit of a kind of alternating current | |
| CN203882882U (en) | External relay drive circuit | |
| CN204316323U (en) | A kind of SS (soft start) control circuit | |
| CN204168130U (en) | A kind of interchange inputs soft-start circuit | |
| CN104836316B (en) | A kind of constant-current charging circuit of adjustable current | |
| CN203398985U (en) | Anti-surge circuit | |
| CN204517047U (en) | Electricity-saving socket | |
| CN104779653A (en) | Charging indicating circuit | |
| CN204597149U (en) | A kind of appliances power source socket | |
| CN204794034U (en) | Input undervoltage protection circuit | |
| CN104079156A (en) | Soft starting circuit of power source | |
| CN204681147U (en) | A kind of constant-current charging circuit of adjustable current | |
| CN203180778U (en) | Double-forward converter circuit | |
| CN104570816A (en) | Simple time delay power supply switching circuit | |
| CN204167887U (en) | Power supply for teaching | |
| CN203086359U (en) | A capacitance-resistance voltage-reduction circuit with in-series loads | |
| CN204441194U (en) | A kind of connecting circuit of A.C. contactor spark management device | |
| CN203233301U (en) | DC input filter circuit applied to repeater | |
| CN203984299U (en) | A kind of power of motor compensator | |
| CN204131383U (en) | Switching Power Supply anti-back flow circuit |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160415 |