CN105142316A - LED drive circuit based on constant current diode - Google Patents
LED drive circuit based on constant current diode Download PDFInfo
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- CN105142316A CN105142316A CN201510662348.1A CN201510662348A CN105142316A CN 105142316 A CN105142316 A CN 105142316A CN 201510662348 A CN201510662348 A CN 201510662348A CN 105142316 A CN105142316 A CN 105142316A
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- diode
- current regulator
- drive circuit
- led drive
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Abstract
The invention discloses an LED drive circuit based on a constant current diode. The LED drive circuit comprises 220V AC voltage and a bridge type rectifier BD1. The LED drive circuit also comprises a CRDS constant current diode set and an LED lamp set. The 220V AC voltage is connected in series with the bridge type rectifier BD1. The output end of the bridge type rectifier BD1 is respectively connected in parallel with a capacitor C2, a diode VD1, a capacitor C3 and a diode VD3. A diode VD2 and a resistor R1 are connected in series among the capacitor C2, the diode VD1, the capacitor C3 and the diode VD3. The CRDS constant current diode set and the LED lamp set are connected in series at the output end of the bridge type rectifier BD1. According to the LED drive circuit based on the constant current diode, commercial power is utilized to drive bulb LED lamps so that constant current can be protected within range of 27.1-27.8mA and efficiency is within range of 82.5%-95.7%.
Description
Technical field
The present invention relates to a kind of LED drive circuit based on current regulator diode, belong to LED lamp circuit technical field.
Background technology
Conventional incandescent power consumption is high, the life-span is short, under the overall situation of global resources anxiety, is forbidden producing gradually, the LED technology high speed development thereupon replaced, gradually become the first-selection of novel green illumination by national governments.But LED is due to negative temperature coefficient, electric current can be made sharply to increase and to cause junction temperature to raise, the lost of life.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of LED drive circuit based on current regulator diode.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of LED drive circuit based on current regulator diode, comprise 220V alternating voltage, bridge rectifier BD1, also comprise: CRDS current regulator diode group, LED group, described 220V alternating voltage and bridge rectifier BD1 are in series, described bridge rectifier BD1 output is parallel with electric capacity C2, diode VD1 respectively, electric capacity C3, diode VD3; Electric capacity C2, diode VD1, be in series with diode VD2, resistance R1 between electric capacity C3, diode VD3; Described CRDS current regulator diode group and LED group are connected on bridge rectifier BD1 output.
Described CRDS current regulator diode group is composed in parallel by 5 current regulator diodes.
Described LED group is composed in series by 80 LED chips.
Preferably, also comprise filter inductance L1, described filter inductance L1 is connected on bridge rectifier BD1 output.
Preferably, also comprise high-power thermal resistor NTC, before described high-power thermal resistor NTC is connected on CRDS current regulator diode group.
Preferably, protection electric capacity C4 is also comprised, before described protection electric capacity C4 is connected in parallel on CRDS current regulator diode group.
Beneficial effect: a kind of LED drive circuit based on current regulator diode provided by the invention, utilizes civil power to drive ball bubble LED, can protect constant current in the scope of 27.1-27.8mA, and efficiency is within the scope of 82.5%-95.7%.The design's circuit is simple and easy, and cost is low, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, a kind of LED drive circuit based on current regulator diode, comprise 220V alternating voltage, bridge rectifier BD1, also comprise: CRDS current regulator diode group, LED group, described 220V alternating voltage and bridge rectifier BD1 are in series, described bridge rectifier BD1 output is parallel with electric capacity C2, diode VD1 respectively, electric capacity C3, diode VD3; Electric capacity C2, diode VD1, be in series with diode VD2, resistance R1 between electric capacity C3, diode VD3; Described CRDS current regulator diode group and LED group are connected on bridge rectifier BD1 output.
Described CRDS current regulator diode group is composed in parallel by 5 current regulator diodes.
Described LED group is composed in series by 80 LED chips.
Preferably, also comprise filter inductance L1, described filter inductance L1 is connected on bridge rectifier BD1 output.
Preferably, also comprise high-power thermal resistor NTC, before described high-power thermal resistor NTC is connected on CRDS current regulator diode group.
Preferably, protection electric capacity C4 is also comprised, before described protection electric capacity C4 is connected in parallel on CRDS current regulator diode group.
Concrete occupation mode is as follows: C1, C2, VD1, VD2, C3, VD3, R1 are passive power factor correcting circuit, power factor can be brought up to about 0.9, the bulb lamp of 80 model 3041LED chip-in series, and the current regulator diode parallel circuits that have employed 5 S-562T.When line voltage can keep constant current substantially in the scope of 27.1-27.8mA when 200-225V changes, and efficiency is at 82.5%-95.7% operated within range.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the LED drive circuit based on current regulator diode, comprise 220V alternating voltage, bridge rectifier BD1, it is characterized in that: also comprise: CRDS current regulator diode group, LED group, described 220V alternating voltage and bridge rectifier BD1 are in series, described bridge rectifier BD1 output is parallel with electric capacity C2, diode VD1 respectively, electric capacity C3, diode VD3; Electric capacity C2, diode VD1, be in series with diode VD2, resistance R1 between electric capacity C3, diode VD3; Described CRDS current regulator diode group and LED group are connected on bridge rectifier BD1 output.
2. a kind of LED drive circuit based on current regulator diode according to claim 1, is characterized in that: described CRDS current regulator diode group is composed in parallel by 5 current regulator diodes.
3. a kind of LED drive circuit based on current regulator diode according to claim 1, is characterized in that: described LED group is composed in series by 80 LED chips.
4. a kind of LED drive circuit based on current regulator diode according to claim 1, is characterized in that: also comprise filter inductance L1, and described filter inductance L1 is connected on bridge rectifier BD1 output.
5. a kind of LED drive circuit based on current regulator diode according to claim 1, is characterized in that: also comprise high-power thermal resistor NTC, before described high-power thermal resistor NTC is connected on CRDS current regulator diode group.
6. a kind of LED drive circuit based on current regulator diode according to claim 1, is characterized in that: also comprise protection electric capacity C4, before described protection electric capacity C4 is connected in parallel on CRDS current regulator diode group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662348.1A CN105142316A (en) | 2015-10-15 | 2015-10-15 | LED drive circuit based on constant current diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662348.1A CN105142316A (en) | 2015-10-15 | 2015-10-15 | LED drive circuit based on constant current diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105142316A true CN105142316A (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510662348.1A Pending CN105142316A (en) | 2015-10-15 | 2015-10-15 | LED drive circuit based on constant current diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105142316A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021156382A1 (en) * | 2020-02-07 | 2021-08-12 | PulsIV Limited | Electrical conversion |
-
2015
- 2015-10-15 CN CN201510662348.1A patent/CN105142316A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021156382A1 (en) * | 2020-02-07 | 2021-08-12 | PulsIV Limited | Electrical conversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |