CN205081997U - Dimmer circuit of LED highlight flashlight - Google Patents
Dimmer circuit of LED highlight flashlight Download PDFInfo
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- CN205081997U CN205081997U CN201520702136.7U CN201520702136U CN205081997U CN 205081997 U CN205081997 U CN 205081997U CN 201520702136 U CN201520702136 U CN 201520702136U CN 205081997 U CN205081997 U CN 205081997U
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- electric capacity
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a dimmer circuit of LED highlight flashlight, including power, lamp holder circuit and tail -hood part circuit, the lamp holder circuit includes emitting diode, constant -current drive circuit and charging circuit, and tail -hood part circuit includes tank, singlechip and switch, the output of power links to each other with emitting diode and charging circuit respectively, constant -current drive circuit one end and emitting diode's output, and during the constant -current drive circuit other end inserted charging circuit, charging circuit linked to each other with tank and singlechip respectively, and tank and switch link to each other with the singlechip respectively. When emitting diode " went out " under the PWM state of adjusting luminance, charging circuit gave tail -hood part circuit quick big electricity charging, and tank stores the electric energy, when the LED " shone " under the PWM state of adjusting luminance, charging circuit closed, and tail -hood part circuit uses the electric energy work among the storage circuit.
Description
Technical field
The utility model relates to the technical field that LED flashlight luminosity regulates, and particularly relates to a kind of light adjusting circuit of LED bright light torch.
Background technology
LED glare light electric torch prior art: one adopts adjusting resistance values to regulate LED output current size, changes LED luminance.This circuit efficiency is low, and tail-hood caloric value is large, and during adjustment, brightness can not even variation; The second is that tail-hood circuit adopts independent current source to power, and changes output current control LED luminance by regulator potentiometer.This circuit tail-hood needs power supply, the inconvenient battery altering of consumer, and regulates LED can not consecutive variations; Brightness must be transferred to minimum, LED could be closed and export, when opening at every turn, also must minimum from brightness time be transferred to the brightness of needs, can not the optimal brightness function that is adjusted to when using of last, all to readjust when using at every turn, also easily to damage potentiometer; Be not suitable for needing instantaneous lighting, the particular surroundings of instantaneous field work of going out.
Utility model content
For the weak point existed in above-mentioned technology, the utility model provides the light adjusting circuit of the LED bright light torch of a kind of control PWM light modulation.
In order to achieve the above object, the light adjusting circuit of a kind of LED bright light torch of the utility model, comprise power supply, lamp holder circuit and tail cover part parallel circuit, described lamp holder circuit comprises light-emitting diode, constant-current drive circuit and charging circuit, and described tail cover part parallel circuit comprises accumulator, single-chip microcomputer and switch; The output of described power supply is connected with light-emitting diode and charging circuit respectively, described constant-current drive circuit one end is connected with the output of light-emitting diode, and in constant-current drive circuit other end access charging circuit, described charging circuit is connected with accumulator and single-chip microcomputer respectively, described accumulator and switch are connected with single-chip microcomputer respectively, the PWM dim signal that charging circuit identification single-chip microcomputer exports, and whether export according to pwm signal output control charging current.
Wherein, described charging circuit comprises the first diode, second diode, first electric capacity, triode, first metal-oxide-semiconductor, first resistance, second resistance, 3rd resistance and the 4th resistance, the input of described first diode and the input of the second diode are connected with the output of power supply respectively, the output of described first diode is connected with the input of the first electric capacity and the emitter of triode respectively, described first resistance, the input of the second resistance and the 3rd resistance is connected with the output of the second diode respectively, the output of described second resistance is connected with the drain electrode of the first metal-oxide-semiconductor, the output of described 3rd resistance is connected with the base stage of triode, the collector electrode of described triode and the grid of the first metal-oxide-semiconductor are connected with the input of the 4th resistance respectively, the output of described 4th resistance, the output of the first resistance, the output of the first electric capacity and the source electrode of the first metal-oxide-semiconductor are connected with accumulator and single-chip microcomputer respectively.
Wherein, described accumulator comprises the 3rd diode and the second electric capacity, the output of the 4th resistance and the output of the first resistance are connected with the input of the 3rd diode respectively, the output of the first electric capacity and the source electrode of the first metal-oxide-semiconductor are connected with the input of the 3rd diode respectively, one end of described second electric capacity is connected with the output of the 3rd diode and single-chip microcomputer respectively, the other end ground connection of the second electric capacity.
Wherein, this light adjusting circuit also comprises voltage regulator circuit, described voltage regulator circuit comprises the 5th resistance, the 6th resistance and potentiometer, one end of described 5th resistance is connected with single-chip microcomputer, and the other end of the 5th resistance is connected with the stiff end of potentiometer, one end of described 6th resistance is connected with single-chip microcomputer, and the other end of the 6th resistance is connected with the sliding end of potentiometer.
Wherein, this light adjusting circuit also comprises voltage stabilizing IC and the 3rd electric capacity, the input of described voltage stabilizing IC is connected with the 3rd diode and the second electric capacity respectively, the output of voltage stabilizing IC is connected with single-chip microcomputer, described 3rd electric capacity is arranged between voltage stabilizing IC and single-chip microcomputer, and described voltage stabilizing IC and the 3rd electric capacity all draw one end ground connection.
Wherein, this light adjusting circuit also comprises the second metal-oxide-semiconductor, the source ground of described second metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor is connected with single-chip microcomputer, and the source electrode of the output of described 4th resistance, the output of the first resistance, the output of the first electric capacity and the first metal-oxide-semiconductor is connected with the drain electrode of the second metal-oxide-semiconductor respectively.
The beneficial effects of the utility model are:
Compared with prior art, the light adjusting circuit of LED bright light torch of the present utility model, by connecting at a high speed and cut-off current, the high speed realizing light-emitting diode disconnects and closes, thus reaches PWM dimming effect.When under PWM dimming state, light-emitting diode " goes out ", charging circuit charges to tail cover part parallel circuit rapid large-current, accumulator store electrical energy; Under PWM dimming state time LED " bright ", charging circuit cuts out, and tail cover part parallel circuit uses the electric energy work in storage circuit; During LED glare light electric torch OFF, lamp holder circuit and tail cover part parallel circuit form special charger, and small area analysis will be adopted to charge to accumulator.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the light adjusting circuit of the utility model LED bright light torch.
Main element symbol description is as follows:
1, lamp holder circuit 2, tail cover part parallel circuit
3, voltage stabilizing IC11, constant-current drive circuit
12, charging circuit 21, accumulator
22, voltage regulator circuit 111, drive IC
D1, the first diode D2, the second diode
D3, the 3rd diode D4, light-emitting diode
C1, the first electric capacity C2, the second electric capacity
C3, the 3rd electric capacity Q1, triode
MOS1, the first metal-oxide-semiconductor MOS2, the second metal-oxide-semiconductor
MCU, single-chip microcomputer K1, switch
R1, the first resistance R2, the second resistance
R3, the 3rd resistance R4, the 4th resistance
R5, the 5th resistance R6, the 6th resistance
R7, potentiometer VCC, power supply.
Embodiment
In order to more clearly state the utility model, below in conjunction with accompanying drawing, the utility model is further described.
Consult Fig. 1, the light adjusting circuit of a kind of LED bright light torch of the utility model, comprise power supply VCC, lamp holder circuit 1 and tail cover part parallel circuit 2, lamp holder circuit 1 comprises light-emitting diode D4, constant-current drive circuit 11 and charging circuit 12, and tail cover part parallel circuit 2 comprises accumulator 21, single-chip microprocessor MCU and K switch 1; The output of power supply VCC is connected with light-emitting diode D4 and charging circuit 12 respectively, constant-current drive circuit 11 one end is connected with the output of light-emitting diode D4, and in constant-current drive circuit 11 other end access charging circuit 12, charging circuit 12 is connected with accumulator 21 and single-chip microprocessor MCU respectively, accumulator 21 and K switch 1 are connected with single-chip microprocessor MCU respectively, whether charging circuit 12 identifies the PWM dim signal that single-chip microprocessor MCU exports, and export according to pwm signal output control charging current.Constant-current drive circuit 11 is made up of the drive IC 111 of multiple parallel connection.
Compared to prior art, the light adjusting circuit of LED bright light torch of the present utility model, by connecting at a high speed and cut-off current, the high speed realizing light-emitting diode D4 disconnects with closed, thus reaches PWM dimming effect.When under PWM dimming state, light-emitting diode D4 " goes out ", the charging of tail cover part parallel circuit 2 rapid large-current given by charging circuit 12, accumulator 21 store electrical energy; Under PWM dimming state time LED " bright ", charging circuit 12 cuts out, and tail cover part parallel circuit 2 uses the electric energy work in storage circuit; During LED glare light electric torch OFF, lamp holder circuit 1 and tail cover part parallel circuit 2 form special charger, and small area analysis will be adopted to charge to accumulator 21.LED glare light electric torch in off position time, flicking K switch 1, LED glare light electric torch is lighted, and keep brightness be last time use close before brightness constant; Left rotation and right rotation K switch 1 can regulate the bright dark change of light-emitting diode D4; When opening, flicking K switch 1 closes the output of light-emitting diode D4.
In the present embodiment, charging circuit 12 comprises the first diode D1, second diode D2, first electric capacity C1, triode Q1, first metal-oxide-semiconductor MOS1, first resistance R1, second resistance R2, 3rd resistance R3 and the 4th resistance R4, the input of the first diode D1 and the input of the second diode D2 are connected with the output of power supply VCC respectively, the output of the first diode D1 is connected with the input of the first electric capacity C1 and the emitter of triode Q1 respectively, first resistance R1, the input of the second resistance R2 and the 3rd resistance R3 is connected with the output of the second diode D2 respectively, the output of the second resistance R2 is connected with the drain electrode of the first metal-oxide-semiconductor MOS1, the output of the 3rd resistance R3 is connected with the base stage of triode Q1, the collector electrode of triode Q1 and the grid of the first metal-oxide-semiconductor MOS1 are connected with the input of the 4th resistance R4 respectively, the output of the 4th resistance R4, the output of the first resistance R1, the output of the first electric capacity C1 and the source electrode of the first metal-oxide-semiconductor MOS1 are connected with accumulator 21 and single-chip microprocessor MCU respectively.
In the present embodiment, accumulator 21 comprises the 3rd diode D3 and the second electric capacity C2, the output of the 4th resistance R4 and the output of the first resistance R1 are connected with the input of the 3rd diode D3 respectively, the output of the first electric capacity C1 and the source electrode of the first metal-oxide-semiconductor MOS1 are connected with the input of the 3rd diode D3 respectively, one end of second electric capacity C2 is connected with the output of the 3rd diode D3 and single-chip microprocessor MCU respectively, the other end ground connection of the second electric capacity C2.Second electric capacity C2 is large bulk capacitance, can store enough electricity in the charge state.
In the present embodiment, this light adjusting circuit also comprises voltage regulator circuit 22, voltage regulator circuit 22 comprises the 5th resistance R5, the 6th resistance R6 and potentiometer R7, one end of 5th resistance R5 is connected with single-chip microprocessor MCU, and the other end of the 5th resistance R5 is connected with the stiff end of potentiometer R7, one end of 6th resistance R6 is connected with single-chip microprocessor MCU, and the other end of the 6th resistance R6 is connected with the sliding end of potentiometer R7.By the resistance value of regulator potentiometer R7 part, thus reach regulation output magnitude of voltage.
In the present embodiment, this light adjusting circuit also comprises voltage stabilizing IC3 and the 3rd electric capacity C3, the input of voltage stabilizing IC3 is connected with the 3rd diode D3 and the second electric capacity C2 respectively, the output of voltage stabilizing IC3 is connected with single-chip microprocessor MCU, 3rd electric capacity C3 is arranged between voltage stabilizing IC3 and single-chip microprocessor MCU, and voltage stabilizing IC3 and the 3rd electric capacity C3 all draws one end ground connection.Voltage stabilizing IC3 serves the effect of burning voltage, and the 3rd electric capacity C3 serves the effect of filtering, thus makes the level entering single-chip microprocessor MCU more stable.
In the present embodiment, this light adjusting circuit also comprises the second metal-oxide-semiconductor MOS2, the source ground of the second metal-oxide-semiconductor MOS2, the grid of the second metal-oxide-semiconductor MOS2 is connected with single-chip microprocessor MCU, and the output of the 4th resistance R4, the output of the first resistance R1, the output of the first electric capacity C1 and the source electrode of the first metal-oxide-semiconductor MOS1 are connected with the drain electrode of the second metal-oxide-semiconductor MOS2 respectively.Output voltage values in single-chip microprocessor MCU is little, after the amplification by the second metal-oxide-semiconductor MOS2, the effect of charging circuit 12 just can be made more obvious.
Be only several specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (6)
1. the light adjusting circuit of a LED bright light torch, it is characterized in that, comprise power supply, lamp holder circuit and tail cover part parallel circuit, described lamp holder circuit comprises light-emitting diode, constant-current drive circuit and charging circuit, and described tail cover part parallel circuit comprises accumulator, single-chip microcomputer and switch; The output of described power supply is connected with light-emitting diode and charging circuit respectively, described constant-current drive circuit one end is connected with the output of light-emitting diode, and in constant-current drive circuit other end access charging circuit, described charging circuit is connected with accumulator and single-chip microcomputer respectively, described accumulator and switch are connected with single-chip microcomputer respectively, the PWM dim signal that charging circuit identification single-chip microcomputer exports, and whether export according to pwm signal output control charging current.
2. the light adjusting circuit of LED bright light torch according to claim 1, it is characterized in that, state charging circuit and comprise the first diode, second diode, first electric capacity, triode, first metal-oxide-semiconductor, first resistance, second resistance, 3rd resistance and the 4th resistance, the input of described first diode and the input of the second diode are connected with the output of power supply respectively, the output of described first diode is connected with the input of the first electric capacity and the emitter of triode respectively, described first resistance, the input of the second resistance and the 3rd resistance is connected with the output of the second diode respectively, the output of described second resistance is connected with the drain electrode of the first metal-oxide-semiconductor, the output of described 3rd resistance is connected with the base stage of triode, the collector electrode of described triode and the grid of the first metal-oxide-semiconductor are connected with the input of the 4th resistance respectively, the output of described 4th resistance, the output of the first resistance, the output of the first electric capacity and the source electrode of the first metal-oxide-semiconductor are connected with accumulator and single-chip microcomputer respectively.
3. the light adjusting circuit of LED bright light torch according to claim 2, it is characterized in that, described accumulator comprises the 3rd diode and the second electric capacity, the output of the 4th resistance and the output of the first resistance are connected with the input of the 3rd diode respectively, the output of the first electric capacity and the source electrode of the first metal-oxide-semiconductor are connected with the input of the 3rd diode respectively, one end of described second electric capacity is connected with the output of the 3rd diode and single-chip microcomputer respectively, the other end ground connection of the second electric capacity.
4. the light adjusting circuit of LED bright light torch according to claim 3, it is characterized in that, this light adjusting circuit also comprises voltage regulator circuit, described voltage regulator circuit comprises the 5th resistance, the 6th resistance and potentiometer, one end of described 5th resistance is connected with single-chip microcomputer, and the other end of the 5th resistance is connected with the stiff end of potentiometer, one end of described 6th resistance is connected with single-chip microcomputer, and the other end of the 6th resistance is connected with the sliding end of potentiometer.
5. the light adjusting circuit of LED bright light torch according to claim 4, it is characterized in that, this light adjusting circuit also comprises voltage stabilizing IC and the 3rd electric capacity, the input of described voltage stabilizing IC is connected with the 3rd diode and the second electric capacity respectively, the output of voltage stabilizing IC is connected with single-chip microcomputer, described 3rd electric capacity is arranged between voltage stabilizing IC and single-chip microcomputer, and described voltage stabilizing IC and the 3rd electric capacity all draw one end ground connection.
6. the light adjusting circuit of LED bright light torch according to claim 3, it is characterized in that, this light adjusting circuit comprises the second metal-oxide-semiconductor, the source ground of described second metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor is connected with single-chip microcomputer, and the source electrode of the output of described 4th resistance, the output of the first resistance, the output of the first electric capacity and the first metal-oxide-semiconductor is connected with the drain electrode of the second metal-oxide-semiconductor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702136.7U CN205081997U (en) | 2015-09-11 | 2015-09-11 | Dimmer circuit of LED highlight flashlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520702136.7U CN205081997U (en) | 2015-09-11 | 2015-09-11 | Dimmer circuit of LED highlight flashlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205081997U true CN205081997U (en) | 2016-03-09 |
Family
ID=55434367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520702136.7U Expired - Fee Related CN205081997U (en) | 2015-09-11 | 2015-09-11 | Dimmer circuit of LED highlight flashlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205081997U (en) |
-
2015
- 2015-09-11 CN CN201520702136.7U patent/CN205081997U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20170911 |