CN207969016U - A kind of lighting circuit detecting turn-off function automatically with stroboscopic - Google Patents
A kind of lighting circuit detecting turn-off function automatically with stroboscopic Download PDFInfo
- Publication number
- CN207969016U CN207969016U CN201820124034.5U CN201820124034U CN207969016U CN 207969016 U CN207969016 U CN 207969016U CN 201820124034 U CN201820124034 U CN 201820124034U CN 207969016 U CN207969016 U CN 207969016U
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- circuit
- stroboscopic
- filter
- pwm control
- automatically
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- 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
A kind of lighting circuit detecting turn-off function automatically with stroboscopic, including EMI filter rectifiers, RC absorbing circuits, pwm control circuit, DC TO DC converter circuits, output rectifier and filter, stroboscopic detects breaking circuit automatically, the EMI filter rectifiers, RC absorbing circuits, DC TO DC converter circuits, output rectifier and filter is sequentially connected in series, the pwm control circuit is connected on EMI filter rectifiers and DC TO DC converter circuits, the stroboscopic detects breaking circuit and is separately connected output rectifier and filter and pwm control circuit automatically.When work, the MCU that stroboscopic detects breaking circuit automatically is detected the voltage of entire circuit output end, and testing result is fed back to pwm control circuit by optocoupler.When there is stroboscopic phenomenon, timely disconnecting circuit does not influence the illumination functions of other lamps and lanterns on circuit, and flexibility is good, highly practical, has stronger dissemination.
Description
Technical field
The utility model is related to a kind of control circuit more particularly to a kind of power for illumination detecting turn-off function automatically with stroboscopic
Road.
Background technology
General lamps and lanterns are in life termination or product itself failure, the phenomenon that will produce flicker, consumer caused to have to
The lighting system shutdown of other circuits in same circuit, and if repair can not be timely, the function of normal illumination can be influenced, influenced
The normal use of user.
Utility model content
Based on this, it is necessary to be directed to deficiency in the prior art, provide a kind of photograph detecting turn-off function automatically with stroboscopic
Bright circuit.
A kind of lighting circuit detecting turn-off function automatically with stroboscopic, including EMI filter rectifiers, RC absorbing circuits,
Pwm control circuit, DC TO DC converter circuits, output rectifier and filter, stroboscopic detect breaking circuit, the EMI automatically
Filter rectifier, RC absorbing circuits, DC TO DC converter circuits, output rectifier and filter are sequentially connected in series, described
Pwm control circuit is connected on EMI filter rectifiers and DC TO DC converter circuits, and the stroboscopic detects pass automatically
Deenergizing is separately connected output rectifier and filter and pwm control circuit.
Further, it includes MCU and optocoupler PC817 that the stroboscopic detects breaking circuit automatically, and stroboscopic detects shutdown automatically
The MCU of circuit is detected the voltage of entire circuit output end, and testing result is fed back to PWM control electricity by optocoupler PC817
Road.
Further, further include inductance RV, inductance RI, capacitance C10, the MCU two pins respectively by inductance RV,
Inductance RI is connected on the positive and negative electrode of output rectifier and filter output end, and another pins in parallel of MCU is in output rectification filter
On the anode of 40 output end of circuit, capacitance C10, the other end of capacitance C10 is grounded.
Further, further include dim signal detection circuit, the pwm control circuit is connected by dim signal detection circuit
It is connected on EMI filter rectifiers.
A kind of advantageous effect for the lighting circuit detecting turn-off function automatically with stroboscopic of the utility model is：Pass through setting
Stroboscopic detects breaking circuit automatically, and the MCU that stroboscopic detects breaking circuit automatically is detected the voltage of entire circuit output end,
Testing result is fed back into pwm control circuit by optocoupler PC817.When there is stroboscopic phenomenon, timely disconnecting circuit does not influence circuit
The illumination functions of other upper lamps and lanterns, guarantee section lighting device still can be normal, and flexibility is good, highly practical, has stronger
Dissemination.
Description of the drawings
Fig. 1 is the circuit connection diagram for the lighting circuit that the utility model detects turn-off function with stroboscopic automatically.
Specific implementation mode
In order to make the object, technical solution and advantage of utility model be more clearly understood, with reference to the accompanying drawings and embodiments,
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only practical new to explain
Type is not used to limit utility model.
As shown in Figure 1, a kind of lighting circuit detecting turn-off function automatically with stroboscopic of offer of the utility model, band frequency
The lighting circuit for dodging automatic detection turn-off function include EMI filter rectifiers 10, RC absorbing circuits 20, pwm control circuit 50,
DC TO DC converter circuits 30, output rectifier and filter 40, stroboscopic detect breaking circuit 70 automatically, and the EMI filtering is whole
Current circuit 10, RC absorbing circuits 20, DC TO DC converter circuits 30, output rectifier and filter 40 are sequentially connected in series, institute
It states pwm control circuit 50 to be connected on EMI filter rectifiers 10 and DC TO DC converter circuits 30, the PWM controls
Circuit 50 processed realization is corrected the power factor of EMI filter rectifiers 10, by adjusting the size of d. c. voltage signal,
Change the current peak size connected in the circuit, to realize that LED is dimmed.The stroboscopic detects breaking circuit automatically
70 are separately connected output rectifier and filter 40 and pwm control circuit 50.
In the present embodiment, the lighting circuit 70 for detecting turn-off function automatically with stroboscopic further includes dim signal detection circuit
60, the pwm control circuit 50 is connected to by dim signal detection circuit 60 on EMI filter rectifiers 10.
It includes MCU, inductance RV, inductance RI, capacitance C10 and optocoupler PC817, institute that the stroboscopic detects breaking circuit 70 automatically
Two pins for stating MCU are connected to the positive and negative electrode of 40 output end of output rectifier and filter by inductance RV, inductance RI respectively
On, for another pins in parallel of MCU on the anode, capacitance C10 of 40 output end of output rectifier and filter, capacitance C10's is another
End ground connection.
The input terminal of the optocoupler PC817 is connected on MCU, and the output end of the optocoupler PC817 is connected to PWM control electricity
Road 50.Specifically, pwm control circuit 50 is equipped with chip U1, and the input terminal of optocoupler PC817 is connected to two pins of MCU simultaneously
On, the output end of the optocoupler PC817 is connect with the VT pins of chip U1.
When work, MCU is fed back to signal by optocoupler PC817 by detecting the upset condition of output voltage and electric current
The VT pins of pwm chip U1, when output voltage or current jitter, VT foot voltages are pulled to low level, and chip U1 stops at this time
It only works, LED drivings realize that LED drives turn-off function without output voltage electric current.
A kind of advantageous effect for the lighting circuit detecting turn-off function automatically with stroboscopic of the utility model is：Pass through setting
Stroboscopic detects breaking circuit 70 automatically, and the MCU that stroboscopic detects breaking circuit 70 automatically carries out the voltage of entire circuit output end
Detection, pwm control circuit 50 is fed back to by optocoupler PC817 by testing result.When there is stroboscopic phenomenon, timely disconnecting circuit, no
The illumination functions of other lamps and lanterns on circuit are influenced, guarantee section lighting device still can be normal, and flexibility is good, highly practical, tool
There is stronger dissemination.
The several embodiments of utility model above described embodiment only expresses, the description thereof is more specific and detailed, but
Can not the limitation to utility model patent range therefore be interpreted as.It should be pointed out that for the ordinary skill of this field
For personnel, under the premise of not departing from utility model design, various modifications and improvements can be made, these belong to practicality
Novel protection domain.Therefore, the protection domain of utility model patent should be determined by the appended claims.
Claims (4)
1. a kind of lighting circuit detecting turn-off function automatically with stroboscopic, which is characterized in that including EMI filter rectifiers, RC
Absorbing circuit, pwm control circuit, DC TO DC converter circuits, output rectifier and filter, stroboscopic detect shutdown electricity automatically
Road, the EMI filter rectifiers, RC absorbing circuits, DC TO DC converter circuits, output rectifier and filter are sequentially connected in series
Connection, the pwm control circuit are connected on EMI filter rectifiers and DC TO DC converter circuits, the stroboscopic
Automatic detection breaking circuit is separately connected output rectifier and filter and pwm control circuit.
2. a kind of lighting circuit detecting turn-off function automatically with stroboscopic as described in claim 1, it is characterised in that：The frequency
It includes MCU and optocoupler to dodge automatic detection breaking circuit, and stroboscopic detects electricity of the MCU to entire circuit output end of breaking circuit automatically
Pressure is detected, and testing result is fed back to pwm control circuit by optocoupler.
3. a kind of lighting circuit detecting turn-off function automatically with stroboscopic as claimed in claim 2, it is characterised in that：Further include
Inductance RV, inductance RI, capacitance C10, the MCU two pins respectively by inductance RV, inductance RI be connected to output rectification filter
On the positive and negative electrode of wave circuit output end, anode, the electricity of another pins in parallel of MCU in 40 output end of output rectifier and filter
Hold on C10, the other end of capacitance C10 is grounded.
4. a kind of lighting circuit detecting turn-off function automatically with stroboscopic as described in claim 1, it is characterised in that：Further include
Dim signal detection circuit, the pwm control circuit are connected to by dim signal detection circuit on EMI filter rectifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124034.5U CN207969016U (en) | 2018-01-24 | 2018-01-24 | A kind of lighting circuit detecting turn-off function automatically with stroboscopic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124034.5U CN207969016U (en) | 2018-01-24 | 2018-01-24 | A kind of lighting circuit detecting turn-off function automatically with stroboscopic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207969016U true CN207969016U (en) | 2018-10-12 |
Family
ID=63735116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820124034.5U Active CN207969016U (en) | 2018-01-24 | 2018-01-24 | A kind of lighting circuit detecting turn-off function automatically with stroboscopic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207969016U (en) |
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2018
- 2018-01-24 CN CN201820124034.5U patent/CN207969016U/en active Active
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