CN108322956A - Sound-light controlled LED power supply with anti-interference ability - Google Patents
Sound-light controlled LED power supply with anti-interference ability Download PDFInfo
- Publication number
- CN108322956A CN108322956A CN201710030151.5A CN201710030151A CN108322956A CN 108322956 A CN108322956 A CN 108322956A CN 201710030151 A CN201710030151 A CN 201710030151A CN 108322956 A CN108322956 A CN 108322956A
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- Prior art keywords
- constant
- current
- resistance
- current source
- source circuit
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention belongs to LED illumination lamp driving power fields, disclose a kind of sound-light controlled LED power supply with anti-interference ability being made of sonic-opticalcon trolled switch circuit, constant-current source circuit.Zero curve, the firewire of mains AC are respectively connected to the both ends N, L of sonic-opticalcon trolled switch circuit, the ends T of constant-current source circuit and relay（K）Output end T-phase connect, the N-terminal of constant-current source circuit is connected with alternating current zero curve.Ultrasonic sensor (MIC) in sonic-opticalcon trolled switch circuit and photo resistance (R6), after receiving sound wave and optical information, through triode（Q）Relay is controlled after signal is amplified（K）Actuation, give constant-current source circuit power transmission；Relay（K）Normal-closed end B connect with fire line, after mains failure give constant-current source circuit power supply, in case of need；Current constant control chip（MT7930）The current constant control of output is realized by controlling switching tube (MOS).
Description
Technical field
The present invention relates to a kind of LED powers, more particularly to the sound-light controlled LED power supply with anti-interference ability.
Background technology
Using sound, light-operated switch, interim, the of short duration illumination at construction site night can be met, to eliminate altar lamp
Energy waste.For sound, the light-operated switch using silicon-controlled realization, inductive load has electric current and passes through when standby, there is sense
Property load the problem of can not turning off or still being flickered after turning off.Based on silicon-controlled switch, the incandescent lamp for being 1 for power factor,
Its switch is out of question.But for LED power, power factor is less than 1, since the phase of voltage, electric current is different, that
It can cause to switch out of control or damage switch.
Again since the mechanical equipment in construction site is more, the load variations range of supply line is big；Simultaneously because construction site
Equipment start-stop it is frequent, it is big to the power supply disturbance of LED illumination lamp, non-isolation type LED power to the spoilage of LED illumination lamp very
It is high.
Invention content
The technical problem to be solved by the present invention is to provide it is a kind of can thoroughly turn off, with anti-interference ability with anti-dry
Disturb the sound-light controlled LED power supply of ability.The present invention not only has emergency, thorough turn-off function, but also becomes in input supply voltage
When change, the electric current of output is made to keep stablizing, ensures that LED illumination lamp is not damaged.
In order to solve the above technical problems, the present invention has the sound-light controlled LED power supply of anti-interference ability by sonic-opticalcon trolled switch electricity
Road, constant-current control circuit composition, zero curve, the firewire of mains AC are respectively connected to the both ends N, L of sonic-opticalcon trolled switch circuit, constant current
The ends T of control circuit and the output end T-phase of sonic-opticalcon trolled switch circuit relay electric appliance K connect, the N-terminal of constant-current control circuit and alternating current
Zero curve is connected.
The sonic-opticalcon trolled switch electricity routing resistance R1~R12, capacitance C1~C9, diode D1~D5, supersonic sensing
Device MIC, rectifier bridge BR1, triode Q, relay K, IC chip CD4011 compositions；The N-terminal and capacitance of mains AC
C1, resistance R1 are connected, and are connected with resistance R2 after capacitance C1, resistance R1 parallel connections, resistance R2 is connected with 1 end of rectifier bridge BR1, rectification
2 ends of bridge BR1 are connected with the ends L of alternating current, and 3 ends of rectifier bridge BR1 are connected with diode D1, filter capacitor C2, rectifier bridge BR1
4 ends with audio-switch be connected；The other end of diode D1 is connected with resistance R3, and the other end of resistance R3 is as audio-switch
Power supply VCC, respectively with one end of the coil J of voltage-stabiliser tube DW, capacitance C3, relay K, diode D2, resistance R5, resistance R7,
Resistance R8 is connected with 14 feet of CD4011, and the other end of voltage-stabiliser tube DW and capacitance C3 with audio-switch are connected；Relay K's
Coil J is connected with after diode D2 parallel connections with the collector of diode D3, triode Q, the other end and the resistance R4 of diode D3
Be connected, the other end of resistance R4 is connected with 1 foot of CD4011,2 feet, 1 foot of CD4011,2 pins also with resistance R5, photo resistance
R6, capacitance C4 are connected, and the other end of photo resistance R6 and the other end of capacitance C4 with audio-switch are connect；3 feet of CD4011
Be connected with one end of capacitance C5, diode D4, the other end of capacitance C5 with audio-switch is connected, the other end of diode D4 with
8 feet of resistance R7, CD4011 are connected；4 feet of CD4011 are connected with resistance R9, resistance R10, capacitance C7, the other end of resistance R9
It is connected with 6 feet of capacitance C6, CD4011, the other end of resistance R10 is connected with 8 feet of CD4011, the other end and the ground of capacitance C7
Connection；5 feet, 6 feet of CD4011 are connected, and the other end of resistance R8 is connected with ultrasonic sensor MIC, ultrasonic sensor MIC
The other end be connected to ground；7 feet of CD4011 are connected to the ground, and 8 feet of CD4011 are connected with resistance R7, resistance R10；CD4011's
9 feet are connected with 11 pins of CD4011, and 10 feet of CD4011 are connected with capacitance C9, diode D5, capacitance C8, and capacitance C8's is another
End with audio-switch is connect；12 feet of CD4011 are connected with 13 feet of CD4011, capacitance C9, the other end and capacitance of capacitance C9
C8 connections；13 feet of CD4011 are connected with resistance R11, and the other end of resistance R11 is connected to ground；The other end of diode D5 and electricity
It hinders R12 to be connected, the other end of resistance R12 is connected with the base stage of triode Q, and the emitter of triode Q with audio-switch is connected.
The constant-current source circuit is by resistance R13~R19, capacitance C10~C14, diode D6~D8, transformer T, switch
Pipe MOS, rectifier bridge BR2, current constant control chip MT7930 compositions；1 end of bridge rectifier BR2 and the output end T-phase of relay K
Even, 2 ends of rectifier bridge BR2 are connected with the N-terminal of mains AC, 3 ends and filter capacitor C10, resistance R13, the electricity of rectifier bridge BR2
The one end for holding the winding Np of C11, resistance R14, transformer T is connected, 4 ends of rectifier bridge BR2, the other end of capacitance C10 and constant current
Source circuit it is connected, capacitance C11 is connected with after resistance R14 parallel connections with diode D6, and the other end of diode D6 is with transformer T's
The other end of winding Np, switching tube MOS connections；The winding Na of transformer T is connected with resistance R17, diode D7, transformer T's
The other end of winding Na with constant-current source circuit is connected, and the other end of resistance R17 is connected with resistance R18, the other end of resistance R18
Also it connects to constant-current source circuit；The other end of diode D7 is connected with resistance R16, the other end and the capacitance C13 phases of resistance R16
Even, the other end of capacitance C13 with constant-current source circuit is connect；The DRV feet of current constant control chip MT7930 and switching tube MOS phases
Even, GND feet, the TM feet of current constant control chip MT7930 are connected with stream source, COMP feet and the electricity of current constant control chip MT7930
Hold C12 to be connected, the other end of capacitance C12 with constant-current source circuit is connect；The STP and resistance R13 of current constant control chip MT7930
The other end be connected, the DSEN pins of current constant control chip MT7930 are connected with resistance R17, resistance R18, current constant control chip
The CS pins of MT7930 are connected with the tie point of resistance R16, capacitance C13, VDD pins and the switch of current constant control chip MT7930
Pipe MOS, resistance R19 are connected, and the other end of resistance R19 with constant-current source circuit is connect；The winding Ns and diode of transformer T
D8, capacitance C14, resistance R15, LED light anode are connected, the other end of the winding Ns of transformer T and cathode, the capacitance of LED light
The other end connection of C14, resistance R15.
After this structure, since sonic-opticalcon trolled switch circuit uses relay K, then the normally open end C of relay K connects friendship
The ends L of alternating current are flowed, when relay K is closed, are powered to LED constant current source by the output end T of relay K；The normal-closed end of relay K
B connects fire line, what power supply fire line does not take over usually, the incoming transport stand-by power supply when having a power failure.
Current constant control chip MT7930, DRV feet and the switching tube MOS of current constant control chip MT7930 are used in constant-current source
It is connected, the COMP feet of current constant control chip MT7930 are connected with capacitance C12；The STP and resistance R13 of current constant control chip MT7930
The other end be connected, the DSEN feet of current constant control chip MT7930 are connected with the tie point of resistance R17, resistance R18, current constant control
The CS feet of chip MT7930 are connected with the tie point of resistance R16, capacitance C13, VDD feet and the switch of current constant control chip MT7930
Pipe MOS, resistance R19 are connected.
Description of the drawings
Fig. 1 is sonic-opticalcon trolled switch circuit pictorial diagram；
Fig. 2 is constant-current control circuit pictorial diagram.
Specific implementation mode
1,2 the present invention is described in further detail below in conjunction with the accompanying drawings.
As shown, a kind of novel sound-light controlled LED power supply with anti-interference ability includes sonic-opticalcon trolled switch circuit, constant current
Source circuit, zero curve, the firewire of mains AC are respectively connected to the both ends N, L of sonic-opticalcon trolled switch circuit, the ends T of constant-current source circuit with
The output end T-phase of sonic-opticalcon trolled switch circuit relay electric appliance K connects, and the N-terminal of constant-current source circuit is connected with alternating current N lines.
Load uses relay K in sonic-opticalcon trolled switch circuit, and diode D2 is in parallel with relay K, prevents from blocking stream
When overload electric current, generating high voltage makes triode Q puncture, and the normally open end C of relay K meets the L lines of electric main, relay K
When closure, powered to LED constant current source by the output end of relay K；The normal-closed end B of relay K connects fire line, and fire line is usually
What power supply is not taken over, the incoming transport stand-by power supply when having a power failure, to power to LED illumination lamp.
Current constant control chip MT7930, DRV feet and the switch of current constant control chip MT7930 are used in constant-current source circuit
Pipe MOS is connected, and GND feet, the TM pins of current constant control chip MT7930 with constant-current source are connected, current constant control chip MT7930's
COMP feet are connected with capacitance C12；The STP feet of current constant control chip MT7930 are connected with the other end of resistance R13, current constant control core
The DSEN feet of piece MT7930 are connected with the tie point of resistance R17, resistance R18, the CS feet and resistance of current constant control chip MT7930
R16, the tie point of capacitance C13 are connected, and the VDD pins of current constant control chip MT7930 are connected with switching tube MOS, resistance R19.
Claims (3)
1. a kind of sound-light controlled LED power supply with anti-interference ability being made of sonic-opticalcon trolled switch circuit, constant-current source circuit, special
Sign is, zero curve, the firewire of mains AC are respectively connected to the both ends N, L of sonic-opticalcon trolled switch circuit, one of constant-current source circuit
Input terminal and relay（K）Output end T-phase connect, the N-terminal of constant-current source circuit is connected with alternating current zero curve.
2. the sound-light controlled LED power supply with anti-interference ability as described in claim 1, it is characterised in that sonic-opticalcon trolled switch circuit
In use diode（D2）With relay（K）Parallel connection, relay（K）Normal-closed end B connection fire lines.
3. the sound-light controlled LED power supply with anti-interference ability as described in claim 1, it is characterised in that adopted in constant-current source circuit
With current constant control chip（MT7930）, current constant control chip（MT7930）DRV feet and switching tube（MOS）It is connected, constant current control
Coremaking piece（MT7930）STP feet be connected with one end of resistance (R13), current constant control chip（MT7930）DSEN feet and resistance
(R17), the tie point of resistance (R18) is connected, current constant control chip（MT7930）CS feet and resistance (R16), capacitance (C13)
Tie point is connected, current constant control chip（MT7930）VDD pins and switching tube（MOS）, resistance (R19) be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030151.5A CN108322956A (en) | 2017-01-17 | 2017-01-17 | Sound-light controlled LED power supply with anti-interference ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030151.5A CN108322956A (en) | 2017-01-17 | 2017-01-17 | Sound-light controlled LED power supply with anti-interference ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108322956A true CN108322956A (en) | 2018-07-24 |
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ID=62891729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710030151.5A Pending CN108322956A (en) | 2017-01-17 | 2017-01-17 | Sound-light controlled LED power supply with anti-interference ability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108322956A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267423A (en) * | 2019-06-29 | 2019-09-20 | 南京大陆豪智能电子科技有限公司 | A kind of light control intelligent switch to work under strong electromagnetic |
-
2017
- 2017-01-17 CN CN201710030151.5A patent/CN108322956A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110267423A (en) * | 2019-06-29 | 2019-09-20 | 南京大陆豪智能电子科技有限公司 | A kind of light control intelligent switch to work under strong electromagnetic |
| CN110267423B (en) * | 2019-06-29 | 2021-02-12 | 南京大陆豪智能电子科技有限公司 | Light-operated intelligent switch working under strong electromagnetic interference |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180724 |
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| WD01 | Invention patent application deemed withdrawn after publication |