CN207573671U - Time delayed turn-off circuit for lamp - Google Patents
Time delayed turn-off circuit for lamp Download PDFInfo
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- CN207573671U CN207573671U CN201721465602.XU CN201721465602U CN207573671U CN 207573671 U CN207573671 U CN 207573671U CN 201721465602 U CN201721465602 U CN 201721465602U CN 207573671 U CN207573671 U CN 207573671U
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- circuit
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- switch
- electrolytic capacitor
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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
The utility model discloses a kind of time delayed turn-off circuit for lamp, including current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch, charge control and load switching circuit, switch condition detection circuit, key lighting LED light string, Delayed illumination LED light string and the battery for power supply；Current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch and charge control and load switching circuit are sequentially connected electrically, charge control and load switching circuit are electrically connected respectively with electromagnetic interface filter, conversion switch, switch condition detection circuit, key lighting LED light string and Delayed illumination LED light string, and switch condition detection circuit is electrically connected with current rectifying and wave filtering circuit.The utility model has simple in structure, at low cost, the characteristics of function is complete, and delay time is adjustable.
Description
Technical field
The utility model is related to lamp control circuit technical fields, and at low cost more particularly, to one kind, delay duration is adjustable
Time delayed turn-off circuit for lamp.
Background technology
Time delayed turn-off lamp of the prior art does not have dedicated IC chip and control circuit, and time delayed turn-off circuit for lamp is too multiple
Miscellaneous, of high cost, popularization is poor.
Invention content
The goal of the invention of the utility model be in order to overcome time delayed turn-off circuit for lamp of the prior art too complicated, it is of high cost
Deficiency, provide a kind of at low cost, adjustable time delayed turn-off circuit for lamp of delay duration.
To achieve these goals, the utility model uses following technical scheme：
A kind of time delayed turn-off circuit for lamp, including current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch, charge control and
Load switching circuit, switch condition detection circuit, key lighting LED light string, Delayed illumination LED light string and the battery for power supply；
Current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch and charge control and load switching circuit are sequentially connected electrically, charging control
System and load switching circuit respectively with electromagnetic interface filter, conversion switch, switch condition detection circuit, key lighting LED light string and
Delayed illumination LED light string is electrically connected, and switch condition detection circuit is electrically connected with current rectifying and wave filtering circuit.
Alternating current is become the direct current of voltage stabilization by current rectifying and wave filtering circuit, and electromagnetic interface filter provides electromagnetic compatibility for circuit
Filtering, makes time delayed turn-off lamp not interfere power grid；Conversion switch converts the electrical signal to high frequency electrical signal by switch, subtracts
Small output rectification filter element provides constant electric current for load；
Charge control and load switching circuit are battery, electrolytic capacitor charges and provide protective effect；Input switch state
Detection circuit when detecting switch OFF, delivers a signal to charge control and load switching circuit, realizes and disconnected in switch
When, key lighting LED light string, opening time-delaying illumination LED lamp string are turned off, delay turns off Delayed illumination LED light string after a certain period of time.
Time delayed turn-off lamp is turned off the light automatically after postponing the regular hour after turning off the light, and is provided in short-term during personnel being facilitated to leave
Between illumination, and normal illumination can be provided when common switch is opened.
The utility model have it is simple in structure, it is at low cost, it is chargeable, can it is anti-overcharge, can anti-mistake put, can anti-overvoltage, delay
The characteristics of time is adjustable.
Preferably, current rectifying and wave filtering circuit includes rectifier bridge BS11 and electrolytic capacitor CD21, electromagnetic interface filter includes capacitance
C11 and inductance L11, rectifier bridge BS11 are connect with AC power, rectifier bridge BS11 respectively with capacitance C11 one end and inductance L11 mono-
End electrical connection, capacitance C11 other ends ground connection, the inductance L11 other ends are electrically connected with electrolytic capacitor CD21 anodes, electrolytic capacitor CD21
Cathode is grounded.
Preferably, conversion switch, which includes LED constant current, controls chip US31, capacitance CS31, capacitance CS41, capacitance
CS61, resistance RS41A, resistance RS41B, diode DS31 and arch inductance L21；LED constant current control chip US31 respectively with electricity
Feel L11, capacitance CS31, capacitance CS41, capacitance CS61, resistance RS41A and resistance RS41B electrical connections, diode DS31 cathode point
It is not electrically connected with arch inductance L21, resistance RS41A and resistance RS41B.
Preferably, further include filtering output circuit, conversion switch by filter output circuit and charge control and
Load switching circuit electrical connection.Filtering output circuit converts alternating current to the constant electric current of low ripple, for main illuminating LED lamp
String.
Preferably, charge control and load switching circuit include QW2880 chip US32, DP8205A chips US33, electricity
Hinder RS42A, resistance RS42B, electrolytic capacitor CD31, diode DS32 and voltage-stabiliser tube ZS32, QW2880 chip US32 respectively with
DP8205A chips US33, resistance RS42A, resistance RS42B, electrolytic capacitor CD31, diode DS32 and voltage-stabiliser tube ZS32 are electrically connected
It connects.
Preferably, switch condition detection circuit includes diode DS34, resistance RS32, electrolytic capacitor CD22 and voltage-stabiliser tube
ZS31, diode cathode are electrically connected with resistance RS32 one end, the resistance RS32 other ends respectively with electrolytic capacitor CD22 anodes and steady
Pressure pipe ZS31 cathode are electrically connected, and electrolytic capacitor CD22 cathode and voltage-stabiliser tube ZS31 anodes are grounded.
Preferably, battery is replaced by electrolytic capacitor CD42A and CD42B in parallel.
Therefore, the utility model has the advantages that：It is simple in structure, it is at low cost, it is chargeable, can it is anti-overcharge, can prevent
Cross put, can anti-overvoltage, delay time is adjustable.
Description of the drawings
Fig. 1 is a kind of functional block diagram of the utility model；
Fig. 2 is the current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch and filtering output circuit of the utility model
A kind of circuit diagram；
Fig. 3 is the charge control of the utility model and a kind of circuit of load switching circuit and switch condition detection circuit
Figure.
In figure：Current rectifying and wave filtering circuit 1, electromagnetic interface filter 2, conversion switch 3, charge control and load switching circuit 4,
Switch condition detection circuit 5, key lighting LED light string 6, Delayed illumination LED light string 7, battery 8, filtering output circuit 9.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
Embodiment as shown in Figure 1 is a kind of time delayed turn-off circuit for lamp, including current rectifying and wave filtering circuit 1, electromagnetic interface filter 2, is opened
Close conversion circuit 3, charge control and load switching circuit 4, switch condition detection circuit 5, key lighting LED light string 6, Delayed illumination
LED light string 7 and the battery 8 for power supply；Current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch and charge control and load
Switching circuit is sequentially connected electrically, charge control and load switching circuit respectively with electromagnetic interface filter, conversion switch, switch shape
State detection circuit, key lighting LED light string and the electrical connection of Delayed illumination LED light string, switch condition detection circuit and rectifying and wave-filtering electricity
Road is electrically connected.
As shown in Fig. 2, current rectifying and wave filtering circuit includes rectifier bridge BS11 and electrolytic capacitor CD21, electromagnetic interface filter includes capacitance
C11 and inductance L11, rectifier bridge BS11 are connect with AC power, rectifier bridge BS11 respectively with capacitance C11 one end and inductance L11 mono-
End electrical connection, capacitance C11 other ends ground connection, the inductance L11 other ends are electrically connected with electrolytic capacitor CD21 anodes, electrolytic capacitor CD21
Cathode is grounded.
Conversion switch includes LED constant current and controls chip US31, capacitance CS31, capacitance CS41, capacitance CS61, resistance
RS41A, resistance RS41B, diode DS31 and arch inductance L21；LED constant current control chip US31 respectively with inductance L11, capacitance
CS31, capacitance CS41, capacitance CS61, resistance RS41A and resistance RS41B electrical connections, diode DS31 cathode are electric with arch respectively
Feel L21, resistance RS41A and resistance RS41B electrical connections.
Filtering output circuit 9 is further included, conversion switch switches by filtering output circuit with charge control and load
Circuit is electrically connected.Filtering output circuit is made of CD41.
As shown in figure 3, charge control and load switching circuit include QW2880 chip US32, DP8205A chips US33, electricity
Hinder RS42A, resistance RS42B, electrolytic capacitor CD31, diode DS32 and voltage-stabiliser tube ZS32, QW2880 chip US32 respectively with
DP8205A chips US33, resistance RS42A, resistance RS42B, electrolytic capacitor CD31, diode DS32 and voltage-stabiliser tube ZS32 are electrically connected
It connects.
Switch condition detection circuit includes diode DS34, resistance RS32, electrolytic capacitor CD22 and voltage-stabiliser tube ZS31, two poles
Pipe cathode is electrically connected with resistance RS32 one end, and the resistance RS32 other ends are born respectively with electrolytic capacitor CD22 anodes and voltage-stabiliser tube ZS31
Pole is electrically connected, and electrolytic capacitor CD22 cathode and voltage-stabiliser tube ZS31 anodes are grounded.Battery can by electrolytic capacitor CD42A in parallel and
CD42B is replaced.
The operation principle of the utility model is as follows：
Alternating current is become the direct current of voltage stabilization by current rectifying and wave filtering circuit, and electromagnetic interface filter provides electromagnetic compatibility for circuit
Filtering, makes time delayed turn-off lamp not interfere power grid；Conversion switch converts the electrical signal to high frequency electrical signal by switch, subtracts
Small output rectification filter element provides constant electric current for load；
Charge control and load switching circuit are battery, electrolytic capacitor charges and provide protective effect；Input switch state
Detection circuit when detecting switch OFF, delivers a signal to charge control and load switching circuit, realizes and disconnected in switch
When, key lighting LED light string, opening time-delaying illumination LED lamp string are turned off, delay turns off Delayed illumination LED light string after a certain period of time.
Delay duration can be adjusted by switch condition detection circuit, the increase of resistance RS32 resistance values, electrolytic capacitor CD22 hold
Amount increase or the increase of voltage-stabiliser tube ZS31 voltages can increase delay duration, on the contrary then can reduce delay duration.
Time delayed turn-off lamp is turned off the light automatically after postponing the regular hour after turning off the light, and is provided in short-term during personnel being facilitated to leave
Between illumination, and normal illumination can be provided when common switch is opened.
It should be understood that the present embodiment is merely to illustrate the utility model rather than limitation the scope of the utility model.In addition
It should be understood that after reading the content taught by the present invention, those skilled in the art can make the utility model various
Change or modification, these equivalent forms also fall within the scope of the appended claims of the present application.
Claims (7)
1. a kind of time delayed turn-off circuit for lamp, it is characterized in that, including current rectifying and wave filtering circuit (1), electromagnetic interface filter (2), switch conversion electricity
Road (3), charge control and load switching circuit (4), switch condition detection circuit (5), key lighting LED light string (6), Delayed illumination
LED light string (7) and the battery (8) for power supply；Current rectifying and wave filtering circuit, electromagnetic interface filter, conversion switch and charge control and
Load switching circuit be sequentially connected electrically, charge control and load switching circuit respectively with electromagnetic interface filter, conversion switch, open
Off status detection circuit, key lighting LED light string and the electrical connection of Delayed illumination LED light string, switch condition detection circuit are filtered with rectification
Wave circuit is electrically connected.
2. time delayed turn-off circuit for lamp according to claim 1, it is characterized in that, current rectifying and wave filtering circuit include rectifier bridge BS11 and
Electrolytic capacitor CD21, electromagnetic interface filter include capacitance C11 and inductance L11, and rectifier bridge BS11 is connect with AC power, rectifier bridge
BS11 is electrically connected respectively with capacitance C11 one end and inductance L11 one end, capacitance C11 other ends ground connection, the inductance L11 other ends and electricity
Solve the electrical connection of capacitance CD21 anodes, electrolytic capacitor CD21 cathode ground connection.
3. time delayed turn-off circuit for lamp according to claim 2, it is characterized in that, conversion switch is controlled including LED constant current
Chip US31, capacitance CS31, capacitance CS41, capacitance CS61, resistance RS41A, resistance RS41B, diode DS31 and arch inductance
L21；LED constant current control chip US31 respectively with inductance L11, capacitance CS31, capacitance CS41, capacitance CS61, resistance RS41A and electricity
RS41B electrical connections are hindered, diode DS31 cathode are electrically connected respectively with arch inductance L21, resistance RS41A and resistance RS41B.
4. time delayed turn-off circuit for lamp according to claim 1, it is characterized in that, filtering output circuit (9) is further included, switch turns
It changes circuit and is electrically connected by filtering output circuit with charge control and load switching circuit.
5. time delayed turn-off circuit for lamp according to claim 1, it is characterized in that, charge control and load switching circuit include
QW2880 chip US32, DP8205A chips US33, resistance RS42A, resistance RS42B, electrolytic capacitor CD31, diode DS32 and
Voltage-stabiliser tube ZS32, QW2880 chip US32 respectively with DP8205A chips US33, resistance RS42A, resistance RS42B, electrolytic capacitor
CD31, diode DS32 and voltage-stabiliser tube ZS32 electrical connections.
6. according to the time delayed turn-off circuit for lamp described in claims 1 or 2 or 3 or 4 or 5, it is characterized in that, switch condition detection circuit
Including diode DS34, resistance RS32, electrolytic capacitor CD22 and voltage-stabiliser tube ZS31, diode cathode is electrically connected with resistance RS32 one end
It connects, the resistance RS32 other ends are electrically connected respectively with electrolytic capacitor CD22 anodes and voltage-stabiliser tube ZS31 cathode, and electrolytic capacitor CD22 is born
Pole and voltage-stabiliser tube ZS31 anodes are grounded.
7. according to the time delayed turn-off circuit for lamp described in claims 1 or 2 or 3 or 4 or 5, it is characterized in that, battery is by electrolysis in parallel
Capacitance CD42A and CD42B are replaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465602.XU CN207573671U (en) | 2017-11-06 | 2017-11-06 | Time delayed turn-off circuit for lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721465602.XU CN207573671U (en) | 2017-11-06 | 2017-11-06 | Time delayed turn-off circuit for lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207573671U true CN207573671U (en) | 2018-07-03 |
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ID=62693016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721465602.XU Active CN207573671U (en) | 2017-11-06 | 2017-11-06 | Time delayed turn-off circuit for lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207573671U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542150A (en) * | 2020-03-17 | 2020-08-14 | 浙江阳光照明电器集团股份有限公司 | Human body induction LED lamp circuit with fire-fighting emergency lighting function |
-
2017
- 2017-11-06 CN CN201721465602.XU patent/CN207573671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542150A (en) * | 2020-03-17 | 2020-08-14 | 浙江阳光照明电器集团股份有限公司 | Human body induction LED lamp circuit with fire-fighting emergency lighting function |
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