CN102300352A - Power supply free of electrolytic capacitor - Google Patents
Power supply free of electrolytic capacitor Download PDFInfo
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- CN102300352A CN102300352A CN2011102505628A CN201110250562A CN102300352A CN 102300352 A CN102300352 A CN 102300352A CN 2011102505628 A CN2011102505628 A CN 2011102505628A CN 201110250562 A CN201110250562 A CN 201110250562A CN 102300352 A CN102300352 A CN 102300352A
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- power supply
- triode
- diode
- input
- rectifying device
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Abstract
The invention discloses a power supply free of an electrolytic capacitor. The power supply comprises a rectifying device, a filter, a loop detection apparatus, a diode, a triode, an inductance, a power supply manager and an LED. According to the invention, a power supply that is suitable for LED driving is provided; restriction of short service life of a power supply due to usage of an electrolytic capacitor is broken through, so that service life of the power supply free of an electrolytic capacitor is substantially prolonged.
Description
Technical field
The present invention relates to a kind of power supply, relate in particular to a kind of power supply of no electrolytic capacitor.
Background technology
Conventional power source all needs electrochemical capacitor filtering at input and output.Electrochemical capacitor lost efficacy because of electrolyte is dry, and power supply is restricted useful life.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and a kind of power supply is provided, and relates in particular to a kind of power supply of no electrolytic capacitor.
The technical solution adopted for the present invention to solve the technical problems is: a kind of power supply of no electrolytic capacitor comprises rectifying device, diode, filter, loop arrangement for detecting, triode amplifier, inductance, power supervisor and LED;
The input of described rectifying device is connected with the input of power supply;
The output of described rectifying device is divided into two-way, and one the tunnel is connected successively with diode, filter, and the output of described filter is connected with first pin of power supervisor U1, the negative electrode of LED respectively; Another road is connected successively with the anode of loop arrangement for detecting, triode amplifier, power supervisor, diode, afterflow inductance and LED.
Power supply of the present invention, described rectifying device are provided with the solid electric capacity of the input surging interference that absorbs power supply.
Power supply of the present invention, described filter are to send mode filter by what two solid electric capacity and two inductors were formed.
Power supply of the present invention is connected with fuse between the input of described rectifying device and the input of power supply.
Power supply of the present invention, described triode amplifier comprises diode, triode, resistance, solid electric capacity, the negative electrode of described diode is connected with the base stage of triode, the collection utmost point of described triode is connected with the 3rd pin of power supervisor, is connected with solid electric capacity between the collection utmost point of triode and the 4th pin of power supervisor; All be connected with resistance between the 4th pin of the base stage of described triode, the collection utmost point, emitter-base bandgap grading and power supervisor.
Power supply of the present invention adopts the no electrolytic capacitor technology, breaks through and uses the short restriction of electrochemical capacitor life-span, and service life of the products is increased substantially, and compared with prior art, has obvious improvement and outstanding contribution
,And have practicality, can produce positive effect, implement the technical program, not only cost is low, and environmental protection.
Description of drawings
Fig. 1 is the circuit structure diagram of the no electrolytic capacitor of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples, as shown in Figure 1, it is the circuit structure diagram of the no electrolytic capacitor of power supply of the present invention, a kind of power supply of no electrolytic capacitor comprises rectifying device, filter, loop arrangement for detecting, diode, triode amplifier, inductance, power supervisor and LED.The input of described rectifying device is connected with the input of power supply; The output of described rectifying device DB1 is divided into two-way, and one the tunnel is connected with isolating diode D1, filter, and the output of described filter is connected with the first pin Vin of power supervisor U1, the negative electrode of LED respectively; Another road is connected successively with the anode of loop arrangement for detecting (R7, R8, C7), triode amplifier, power supervisor U1, diode D2, afterflow inductance T1 and LED.
Described triode amplifier comprises diode D4, triode Q1, resistance, solid electric capacity, the negative electrode of described diode D4 is connected with the base stage of triode Q1, the collection utmost point of described triode is connected with the 3rd pin CL of power supervisor, is connected with solid capacitor C 6 between the 4th pin S of the collection utmost point of triode and power supervisor; All be connected with resistance between the 4th pin S of the base stage of described triode, the collection utmost point, emitter-base bandgap grading and power supervisor, be respectively R9, R11, R10.All be connected with solid electric capacity between the 2nd EX of described power supervisor, the 5th pin VDD and the 4th pin S, be respectively C5, C4; Be connected with resistance R 5 between second pin EX of power supervisor and the 5th pin VDD.
The anode of described diode D2 links to each other with the 6th pin D of power supervisor U1, is connected with diode D3 between the negative electrode of described diode D2 and the negative electrode of LED, and the anode of described diode D3 links to each other with the negative electrode of LED; Solid capacitor C 8 is in parallel with LED respectively with resistance R 6.
Described rectifying device is provided with the solid capacitor C 1 of the input surging interference that absorbs power supply.
Described filter be by two solid electric capacity (C2, C3) and two inductors (L1, that L2) forms sends mode filter.
Be connected with fuse F1 between the input of described rectifying device and the input of power supply.
Series resistance R1 and R2 between the collection utmost point of the output of described rectifying device DB1 and triode Q1.
Operation principle of the present invention is as follows: civil power inserts rectifier bridge DB1 through fuse F1, and X capacitor C 1 absorbs the input surging to be disturbed, and suppresses power supply simultaneously to electrical network conducted interference (EMI).Civil power exchanges (AC) voltage and becomes pulse direct current (DC) voltage after rectifier bridge DB1 rectification.This pulsed dc voltage divides two-way operation: the one tunnel isolates through diode D1, sends mode filter filtering by what C2/C3/L1 formed then, gives power supervisor U1 and LED through filtered voltage, provides the energy to LED; Another road is through the variation of R/C loop detecting dc voltage, this voltage signal is delivered to IC tripod (CL) after triode Q1 amplifies, the Signal Regulation output pin D duty ratio that IC collects according to tripod cooperates inductance T1 and sustained diode 3 output constant currents, and driving LED is luminous.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure transformation that utilizes specification of the present invention and accompanying drawing content to be done, or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (5)
1. the power supply of a no electrolytic capacitor is characterized in that, comprises rectifying device, diode, filter, loop arrangement for detecting, triode amplifier, inductance, power supervisor and LED;
The input of described rectifying device is connected with the input of power supply;
The output of described rectifying device is divided into two-way, and one the tunnel is connected successively with diode, filter, and the output of described filter is connected with the negative electrode of power supervisor U1, LED respectively; Another road is connected successively with the anode of loop arrangement for detecting, triode amplifier, power supervisor, diode, afterflow inductance and LED.
2. power supply according to claim 1 is characterized in that, described rectifying device is provided with the solid electric capacity of the input surging interference that absorbs power supply.
3. power supply according to claim 1 is characterized in that, described filter is to send mode filter by what two solid electric capacity and two inductors were formed.
4. power supply according to claim 1 is characterized in that, is connected with fuse between the input of described rectifying device and the input of power supply.
5. power supply according to claim 1, it is characterized in that, described triode amplifier comprises diode, triode, resistance, solid electric capacity, the negative electrode of described diode is connected with the base stage of triode, the collection utmost point of described triode is connected with the 3rd pin of power supervisor, is connected with solid electric capacity between the collection utmost point of triode and the 4th pin of power supervisor; All be connected with resistance between the 4th pin of the base stage of described triode, the collection utmost point, emitter-base bandgap grading and power supervisor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102505628A CN102300352A (en) | 2011-08-29 | 2011-08-29 | Power supply free of electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102505628A CN102300352A (en) | 2011-08-29 | 2011-08-29 | Power supply free of electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102300352A true CN102300352A (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102505628A Pending CN102300352A (en) | 2011-08-29 | 2011-08-29 | Power supply free of electrolytic capacitor |
Country Status (1)
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| CN (1) | CN102300352A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562922A (en) * | 2009-05-31 | 2009-10-21 | 南京航空航天大学 | High brightness LED driving power without electrolytic capacitor |
| CN201708974U (en) * | 2010-05-28 | 2011-01-12 | 郑榕彬 | Non-electrolytic capacitors power factor self-correcting LED circuit |
| US20110062882A1 (en) * | 2009-09-17 | 2011-03-17 | Ching-Chuan Kuo | Systems and methods for driving a light source |
| CN202218438U (en) * | 2011-08-29 | 2012-05-09 | 东莞梵尔赛灯饰有限公司 | Power supply of non-electrolytic capacitor |
-
2011
- 2011-08-29 CN CN2011102505628A patent/CN102300352A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562922A (en) * | 2009-05-31 | 2009-10-21 | 南京航空航天大学 | High brightness LED driving power without electrolytic capacitor |
| US20110062882A1 (en) * | 2009-09-17 | 2011-03-17 | Ching-Chuan Kuo | Systems and methods for driving a light source |
| CN201708974U (en) * | 2010-05-28 | 2011-01-12 | 郑榕彬 | Non-electrolytic capacitors power factor self-correcting LED circuit |
| CN202218438U (en) * | 2011-08-29 | 2012-05-09 | 东莞梵尔赛灯饰有限公司 | Power supply of non-electrolytic capacitor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102438379A (en) * | 2012-01-06 | 2012-05-02 | 昆山市华英精密模具工业有限公司 | LED (Light Emitting Diode) driving power supply |
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| C10 | Entry into substantive examination | ||
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20111228 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |