CN204634101U - Based on the Anti-surging LED drive circuit of piezo-resistance - Google Patents
Based on the Anti-surging LED drive circuit of piezo-resistance Download PDFInfo
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- CN204634101U CN204634101U CN201520273667.9U CN201520273667U CN204634101U CN 204634101 U CN204634101 U CN 204634101U CN 201520273667 U CN201520273667 U CN 201520273667U CN 204634101 U CN204634101 U CN 204634101U
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Abstract
Based on the Anti-surging LED drive circuit of piezo-resistance, comprise full-bridge rectification bridge heap, current-limiting resistance, filter capacitor C2, filter capacitor C3, decompression capacitor C1, resistance R1, resistance R2,3 piezo-resistances; Full-bridge rectification bridge heap direct current output cathode connects LED load positive pole by current-limiting resistance, direct current output negative pole connects LED load negative pole, filter capacitor C2 is in parallel with LED load, filter capacitor C3 one end connects direct current output cathode, the other end connection LED load negative pole of full-bridge rectification bridge heap, and 3 piezo-resistances are connected between civil power zero line and civil power live wire, between civil power live wire and earth connection, between civil power zero line and earth connection.Drive circuit of the present utility model, in each phase line and a zero line piezo-resistance in parallel respectively, prevents surge from burning out drive circuit and LED load, has surge protection function.
Description
Technical field
The utility model relates to LED drive circuit technical field, particularly, relates to a kind of Anti-surging LED drive circuit based on piezo-resistance.
Background technology
LED and semiconductor light-emitting-diode, the wafer that the core of light-emitting diode is made up of p-type semiconductor and n-type semiconductor, has a transition zone, is called PN junction between p-type semiconductor and n-type semiconductor.In the PN junction of some semi-conducting material, the minority carrier of injection and majority carrier compound tense can discharge unnecessary energy in the form of light, thus electric energy is directly converted to luminous energy.PN junction adds reverse voltage, and minority carrier is difficult to inject, therefore not luminous.This diode utilizing injection electroluminescence principle to make, light-emitting diode, is generally called LED.When it is in forward operating state, when electric current flows to negative electrode from LED anode, semiconductor crystal just sends the light from ultraviolet to infrared different colours, the power of light and current related.
The advantages such as LED electricity-saving lamp is with high brightness white light-emitting diode light emitting source, has that light efficiency is high, little power consumption, life-span long, easy to control, non-maintaining, safety and environmental protection, adopt without dodging direct current, are widely used in daily illumination.The luminescence of LED electricity-saving lamp is driven by its drive circuit; because drive circuit is directly connected with 220V alternating current; surge in electrical network easily burns out drive circuit and LED load; although but there is surge; but surge probability of occurrence is also little, and it is lower if the Surge Protector configuring special antisurge can cause, circuit cost is higher, Surge Protector effect plays the not obvious circuit cost performance that causes.
Utility model content
The purpose of this utility model is just the shortcoming and defect overcoming above-mentioned prior art, provides that a kind of circuit structure is simple, the Anti-surging LED drive circuit based on piezo-resistance of low cost.
The technical scheme in the invention for solving the above technical problem is:
Based on the Anti-surging LED drive circuit of piezo-resistance, comprise full-bridge rectification bridge heap, current-limiting resistance R3, filter capacitor C2, filter capacitor C3, decompression capacitor C1, resistance R1, resistance R2,3 piezo-resistances, described resistance R1 connects civil power live wire, be connected between an input that resistance R1 and full-bridge rectification bridge pile after described resistance R2 is in parallel with decompression capacitor C1, another input of described full-bridge rectification bridge heap connects civil power zero line, direct current output cathode connects LED load positive pole by current-limiting resistance R3, direct current output negative pole connects LED load negative pole, described filter capacitor C2 is in parallel with LED load, described filter capacitor C3 one end connects the direct current output cathode of full-bridge rectification bridge heap, the other end connects LED load negative pole, 3 piezo-resistances are connected between civil power zero line and civil power live wire, between civil power live wire and earth connection, between civil power zero line and earth connection.
Preferably, the capacitance of described filter capacitor C2 is 3.3 μ F, and the capacitance of described filter capacitor C3 is 10 μ F, and the capacitance of described decompression capacitor C1 is 334F.
Preferably, the resistance of described resistance R1 is 510 Ω, and the resistance of described resistance R2 is 1M Ω, and the resistance of described current-limiting resistance R3 is 510 Ω.
As further improvement of the utility model, described LED load is in series by multiple LED electricity-saving lamp, and the positive pole of a rear LED electricity-saving lamp connects the negative pole of previous LED electricity-saving lamp.
Preferably, described decompression capacitor C1 and filter capacitor C2 is patch capacitor.
The beneficial effects of the utility model are: drive circuit of the present utility model, in each phase line and a zero line piezo-resistance in parallel respectively, can prevent the surge voltage on circuit from damaging drive circuit and LED load, have surge protection function; Circuit structure of the present utility model is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, based on the Anti-surging LED drive circuit of piezo-resistance, comprise full-bridge rectification bridge heap BD1, current-limiting resistance R3, filter capacitor C2, filter capacitor C3, decompression capacitor C1, resistance R1, resistance R2, piezo-resistance R4, piezo-resistance R5, piezo-resistance R6.Piezo-resistance R4, piezo-resistance R5, piezo-resistance R6 are used for surge protection; prevent the surge voltage on circuit from damaging drive circuit and LED load; piezo-resistance R4 is connected between civil power zero line N and civil power live wire L; piezo-resistance R5 is connected between civil power live wire L and earth connection PE, and piezo-resistance R6 is connected between civil power zero line N and earth connection PE.Described resistance R1 connects civil power live wire, and the other end and the full-bridge rectification bridge that are connected to resistance R1 after described resistance R2 is in parallel with decompression capacitor C1 are piled between an input of BD1; Another input of described full-bridge rectification bridge heap BD1 connects civil power zero line N, direct current output cathode connects LED load positive pole, direct current output negative pole connection LED load negative pole by current-limiting resistance R3; The output voltage of filter capacitor C3 to full-bridge rectification bridge heap BD1 carries out filtering, filtering low-frequency noise, filter capacitor C2 carries out secondary filtering to the input voltage of LED load, filter away high frequency noise, make filter capacitor C2 described in the stabilized input voltage of LED load in parallel with LED load, make the stabilized input voltage of LED load.
LED load uses 220V mains-supplied, 220V alternating current after decompression capacitor C1 step-down through full-bridge rectification again by providing constant-current supply through current-limiting resistance R3 to LED load after filter capacitor C2 filtering.
Due in many applications, need to adopt plurality of LEDs electricity-saving lamp, therefore in the present embodiment, LED load is in series by multiple LED electricity-saving lamp, and the positive pole of a rear LED electricity-saving lamp connects the negative pole of previous LED electricity-saving lamp.Then LED electricity-saving lamp quantity and power is determined according to actual illumination demand, Production requirement etc. in practical application.
Below the preferred parameter of each device in the present embodiment:
The capacitance of the capacitance of filter capacitor C2 to be the capacitance of 3.3 μ F, filter capacitor C3 be 10 μ F, decompression capacitor C1 is 334F, and the resistance of resistance R1 is 510 Ω, and the resistance of resistance R2 is 1M Ω, and the resistance of current-limiting resistance R3 is 510 Ω.Described decompression capacitor C1 and filter capacitor C2 is patch capacitor, to reduce volume shared by drive circuit.
Below be only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, not departing from the some improvements and modifications under the utility model principle prerequisite, protection range of the present utility model should be considered as.
Claims (5)
1., based on the Anti-surging LED drive circuit of piezo-resistance, comprise full-bridge rectification bridge heap, current-limiting resistance R3, filter capacitor C2, decompression capacitor C1, resistance R1, resistance R2, described resistance R1 connects civil power live wire, be connected between an input that resistance R1 and full-bridge rectification bridge pile after described resistance R2 is in parallel with decompression capacitor C1, another input of described full-bridge rectification bridge heap connects civil power zero line, direct current output cathode connects LED load positive pole by current-limiting resistance R3, direct current output negative pole connects LED load negative pole, described filter capacitor C2 is in parallel with LED load, it is characterized in that, also comprise 3 piezo-resistances and filter capacitor C3, filter capacitor C3 one end connects the direct current output cathode of full-bridge rectification bridge heap, the other end connects LED load negative pole, 3 piezo-resistances are connected between civil power zero line and civil power live wire, between civil power live wire and earth connection, between civil power zero line and earth connection.
2. the Anti-surging LED drive circuit based on piezo-resistance according to claim 1, is characterized in that, the capacitance of described filter capacitor C2 is 3.3 μ F, and the capacitance of described filter capacitor C3 is 10 μ F, and the capacitance of described decompression capacitor C1 is 334F.
3. the Anti-surging LED drive circuit based on piezo-resistance according to claim 1, is characterized in that, the resistance of described resistance R1 is 510 Ω, and the resistance of described resistance R2 is 1M Ω, and the resistance of described current-limiting resistance R3 is 510 Ω.
4., according to the arbitrary described Anti-surging LED drive circuit based on piezo-resistance of claims 1 to 3, it is characterized in that, described LED load is in series by multiple LED electricity-saving lamp, and the positive pole of a rear LED electricity-saving lamp connects the negative pole of previous LED electricity-saving lamp.
5., according to the arbitrary described Anti-surging LED drive circuit based on piezo-resistance of claims 1 to 3, it is characterized in that, described decompression capacitor C1 and filter capacitor C2 is patch capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520273667.9U CN204634101U (en) | 2015-04-30 | 2015-04-30 | Based on the Anti-surging LED drive circuit of piezo-resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520273667.9U CN204634101U (en) | 2015-04-30 | 2015-04-30 | Based on the Anti-surging LED drive circuit of piezo-resistance |
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| CN204634101U true CN204634101U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520273667.9U Expired - Fee Related CN204634101U (en) | 2015-04-30 | 2015-04-30 | Based on the Anti-surging LED drive circuit of piezo-resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822203A (en) * | 2015-04-30 | 2015-08-05 | 成都锐奕信息技术有限公司 | LED surge protection circuit based on voltage dependent resistors |
| CN106211464A (en) * | 2016-08-02 | 2016-12-07 | 惠勇 | A kind of drive circuit of LED street lamp |
-
2015
- 2015-04-30 CN CN201520273667.9U patent/CN204634101U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822203A (en) * | 2015-04-30 | 2015-08-05 | 成都锐奕信息技术有限公司 | LED surge protection circuit based on voltage dependent resistors |
| CN106211464A (en) * | 2016-08-02 | 2016-12-07 | 惠勇 | A kind of drive circuit of LED street lamp |
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| Date | Code | Title | Description |
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| 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: 20150909 Termination date: 20160430 |