CN105072783A - LED power supply - Google Patents

LED power supply Download PDF

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Publication number
CN105072783A
CN105072783A CN201510579795.0A CN201510579795A CN105072783A CN 105072783 A CN105072783 A CN 105072783A CN 201510579795 A CN201510579795 A CN 201510579795A CN 105072783 A CN105072783 A CN 105072783A
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China
Prior art keywords
diode
electric capacity
pin
connects
relay
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Application number
CN201510579795.0A
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Chinese (zh)
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CN105072783B (en
Inventor
吉春社
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Xiamen Dongang Technology Co.,Ltd.
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吉春社
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Priority to CN201510579795.0A priority Critical patent/CN105072783B/en
Publication of CN105072783A publication Critical patent/CN105072783A/en
Application granted granted Critical
Publication of CN105072783B publication Critical patent/CN105072783B/en
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Abstract

The invention belongs to a power supply circuit, more particularly relates to an LED power supply. The LED power supply comprises a transformer W, a resistor R1, a capacitor C2 and a relay J, wherein one end of a winding N1 of the transformer W is connected with a 220V mains voltage, the other end of the winding N1 of the transformer W is connected with the other end of the 220V mains voltage, and one end of a winding N2 of the transformer W is connected with the resistor R1, a cathode of a diode D6, an anode of a diode D7, the capacitor C2 and a capacitor C3. The LED power supply adopts a method of connecting rectifying diodes with capacitors in parallel to rectify the alternating current, can effectively prevent modulation on the diodes caused by a power grid high-frequency signal and a power frequency signal, reduces interference, can supply electric energy of LED through a storage battery after power outage of the mains supply, and has the advantages of stable performance, simple structure and diverse functions.

Description

A kind of LED power
Technical field
The invention belongs to power circuit, be specifically related to a kind of LED power.
Background technology
LED is acknowledged as green forth generation light source, is a kind of solid cold light source, has the plurality of advantages such as efficient, life-span length, safety and environmental protection, volume are little, high reliability, fast response time.Reach same illuminating effect at present, the power consumption of LED is approximately 1/10 of incandescent lamp, 1/2 of fluorescent lamp, LED power circuit is concerning most important LED, current most of LED lamp still uses common Power supply, cannot normal power supply when running into powering-off state, and existing power supply many uses diode carries out rectification, and power grid high-frequency signal and power frequency component produce modulation on the diode, thus affect circuit.
Summary of the invention
The object of the invention is to solve the problem proposed in above-mentioned background technology, and a kind of LED power is provided.
For achieving the above object, the technical solution adopted in the present invention:
A kind of LED power, comprises transformer W, resistance R1, electric capacity C2 and relay J, one end of the winding N1 of described transformer W connects 220V line voltage, and the other end of the winding N1 of transformer W connects the other end of 220V line voltage, one end contact resistance R1 of the winding N2 of transformer W, the negative electrode of diode D6, the anode of diode D7, the other end of electric capacity C2 and electric capacity C3, resistance R1 connects the pin 1 of chip IC 1, and the pin 2 of chip IC 1 connects the negative electrode of diode D8, the anode of diode D9, electric capacity C4, the other end of the winding N2 of electric capacity C5 and transformer W, the pin 3 contact resistance R2 of chip IC 1, the base stage of the other end connecting triode VT1 of resistance R2, the collector electrode of triode VT1 connects anode and the relay J of diode D3, the negative electrode contact resistance R3 of diode D3, electric capacity C1, the negative electrode of diode D7, the anode of diode D8, the other end of electric capacity C3, the other end of electric capacity C4, the pin 4 of chip IC 1, the pin 2 of the contact J-1 of relay J, the other end of resistance R3 connects the pin 3 of contact J-2 and the negative electrode of diode D5 of relay J, the pin 2 of the pin 3 contact resistance R4 of the contact J-1 of relay J and the contact J-2 of relay J, the pin 1 of the contact J-1 of relay J connects the positive pole of storage battery E, and the negative pole of storage battery E connects the negative electrode of diode D4, the anode of diode D5, the anode of diode D6, the negative electrode of diode D9, LED group H, the other end of electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C5 and the emitter of triode VT1, the other end of resistance R4 connects the anode of diode D4, and the pin 1 of the contact J-2 of relay J connects the other end of LED group H.
As preferred version of the present invention: described chip IC 1 is 4N25 optical coupler.
As preferred version of the present invention: described diode D4 is light-emitting diode.
Compared with prior art, the invention has the beneficial effects as follows: LED power circuit of the present invention uses the mode of rectifier diode shunt capacitance to carry out rectification to alternating current, can effectively prevent power grid high-frequency signal and power frequency component from producing modulation on the diode, decrease interference, and the electric energy of LED can be supplied by storage battery after mains failure, therefore there is the advantage of the simple and diverse in function of stable performance, structure.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of LED power circuit.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As Fig. 1, a kind of LED power of the present embodiment, comprises transformer W, resistance R1, electric capacity C2 and relay J, one end of the winding N1 of described transformer W connects 220V line voltage, and the other end of the winding N1 of transformer W connects the other end of 220V line voltage, one end contact resistance R1 of the winding N2 of transformer W, the negative electrode of diode D6, the anode of diode D7, the other end of electric capacity C2 and electric capacity C3, resistance R1 connects the pin 1 of chip IC 1, and the pin 2 of chip IC 1 connects the negative electrode of diode D8, the anode of diode D9, electric capacity C4, the other end of the winding N2 of electric capacity C5 and transformer W, the pin 3 contact resistance R2 of chip IC 1, the base stage of the other end connecting triode VT1 of resistance R2, the collector electrode of triode VT1 connects anode and the relay J of diode D3, the negative electrode contact resistance R3 of diode D3, electric capacity C1, the negative electrode of diode D7, the anode of diode D8, the other end of electric capacity C3, the other end of electric capacity C4, the pin 4 of chip IC 1, the pin 2 of the contact J-1 of relay J, the other end of resistance R3 connects the pin 3 of contact J-2 and the negative electrode of diode D5 of relay J, the pin 2 of the pin 3 contact resistance R4 of the contact J-1 of relay J and the contact J-2 of relay J, the pin 1 of the contact J-1 of relay J connects the positive pole of storage battery E, and the negative pole of storage battery E connects the negative electrode of diode D4, the anode of diode D5, the anode of diode D6, the negative electrode of diode D9, LED group H, the other end of electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C5 and the emitter of triode VT1, the other end of resistance R4 connects the anode of diode D4, and the pin 1 of the contact J-2 of relay J connects the other end of LED group H.
Chip IC 1 is 4N25 optical coupler.Diode D4 is light-emitting diode.
Operation principle of the present invention is: 220V alternating voltage becomes galvanic current be directly added in the anti-interference rectifier bridge be made up of diode D1 ~ D4 and electric capacity C2 ~ C5 after the step-down of transformer W after, the mode of rectifier diode shunt capacitance carries out rectification to alternating current, can effectively prevent power grid high-frequency signal and power frequency component from producing modulation on the diode, increase the stability of circuit, when mains failure or meet accident power-off time, the light-emitting diode of optical coupler IC1 inside extinguishes, the transistor base illumination of its inside terminates, phototriode disconnects, the electric current of inflow VT1 base stage is interrupted thereupon, triode VT1 disconnects, so J discharges, 1 of the contact J-1 of relay J, 3 pin are connected, 1 of contact J-1, 2 pin are connected.Storage battery E continues to power to LED group H through contact J-1, J-2 of relay J, LED group H is unlikely and quits work because of commercial power interruption; Light-emitting diode D4 also will light through J-1 and R4 by E simultaneously, do storage battery power supply instruction.When city power recovery, automatically proceed to by mains-supplied again.

Claims (3)

1. a LED power, comprises transformer W, resistance R1, electric capacity C2 and relay J, is characterized in that, one end of the winding N1 of described transformer W connects 220V line voltage, and the other end of the winding N1 of transformer W connects the other end of 220V line voltage, one end contact resistance R1 of the winding N2 of transformer W, the negative electrode of diode D6, the anode of diode D7, the other end of electric capacity C2 and electric capacity C3, resistance R1 connects the pin 1 of chip IC 1, and the pin 2 of chip IC 1 connects the negative electrode of diode D8, the anode of diode D9, electric capacity C4, the other end of the winding N2 of electric capacity C5 and transformer W, the pin 3 contact resistance R2 of chip IC 1, the base stage of the other end connecting triode VT1 of resistance R2, the collector electrode of triode VT1 connects anode and the relay J of diode D3, the negative electrode contact resistance R3 of diode D3, electric capacity C1, the negative electrode of diode D7, the anode of diode D8, the other end of electric capacity C3, the other end of electric capacity C4, the pin 4 of chip IC 1, the pin 2 of the contact J-1 of relay J, the other end of resistance R3 connects the pin 3 of contact J-2 and the negative electrode of diode D5 of relay J, the pin 2 of the pin 3 contact resistance R4 of the contact J-1 of relay J and the contact J-2 of relay J, the pin 1 of the contact J-1 of relay J connects the positive pole of storage battery E, and the negative pole of storage battery E connects the negative electrode of diode D4, the anode of diode D5, the anode of diode D6, the negative electrode of diode D9, LED group H, the other end of electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C5 and the emitter of triode VT1, the other end of resistance R4 connects the anode of diode D4, and the pin 1 of the contact J-2 of relay J connects the other end of LED group H.
2. a kind of LED power according to claim 1, is characterized in that, described chip IC 1 is 4N25 optical coupler.
3. a kind of LED power according to claim 1, is characterized in that, described diode D4 is light-emitting diode.
CN201510579795.0A 2015-09-11 2015-09-11 A kind of LED power Active CN105072783B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510579795.0A CN105072783B (en) 2015-09-11 2015-09-11 A kind of LED power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510579795.0A CN105072783B (en) 2015-09-11 2015-09-11 A kind of LED power

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CN105072783A true CN105072783A (en) 2015-11-18
CN105072783B CN105072783B (en) 2017-08-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106793422A (en) * 2017-02-09 2017-05-31 中山自信照明科技有限公司 Emergency lighting circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100053040A (en) * 2008-11-12 2010-05-20 이금성 Guidance lamp lighting device
CN103633716A (en) * 2012-08-22 2014-03-12 林燕祺 Automatic- power off charger circuit
CN204361777U (en) * 2015-01-28 2015-05-27 山东科技大学 A kind of uninterrupted power supply device for network base station
CN204993995U (en) * 2015-09-11 2016-01-20 吉春社 LED power source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100053040A (en) * 2008-11-12 2010-05-20 이금성 Guidance lamp lighting device
CN103633716A (en) * 2012-08-22 2014-03-12 林燕祺 Automatic- power off charger circuit
CN204361777U (en) * 2015-01-28 2015-05-27 山东科技大学 A kind of uninterrupted power supply device for network base station
CN204993995U (en) * 2015-09-11 2016-01-20 吉春社 LED power source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
佚名: "电磁探伤仪的电源系统设计", 《维库开发网》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106793422A (en) * 2017-02-09 2017-05-31 中山自信照明科技有限公司 Emergency lighting circuit

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Inventor after: Zhuang Junhui

Inventor before: Ji Chunshe

TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170721

Address after: 361021 No. 96-100, Liantang Road, Jimei District, Fujian, Xiamen

Applicant after: XIAMEN DONGANG ELECTRONIC LIMITED

Address before: Xi Ye Village Sixth District Dong Ye Zhen Yangcheng County in Shanxi province 048000 Jincheng City No. 15

Applicant before: Ji Chunshe

GR01 Patent grant
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CP03 Change of name, title or address

Address after: 361012 No. 100, Liantang Road, Jimei District, Xiamen City, Fujian Province

Patentee after: Xiamen dong'ang Photoelectric Technology Co., Ltd

Address before: 361021 No. 96-100, Liantang Road, Jimei District, Fujian, Xiamen

Patentee before: XIAMEN DONGANG ELECTRONIC LIMITED

CP03 Change of name, title or address
CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 361012 No.100 Liantang Road, Jimei District, Xiamen City, Fujian Province

Patentee after: Xiamen Dongang Technology Co.,Ltd.

Address before: 361012 No.100 Liantang Road, Jimei District, Xiamen City, Fujian Province

Patentee before: Xiamen dong'ang Photoelectric Technology Co.,Ltd.