CN208675580U - PWM light adjusting circuit - Google Patents
PWM light adjusting circuit Download PDFInfo
- Publication number
- CN208675580U CN208675580U CN201821137926.5U CN201821137926U CN208675580U CN 208675580 U CN208675580 U CN 208675580U CN 201821137926 U CN201821137926 U CN 201821137926U CN 208675580 U CN208675580 U CN 208675580U
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 35
- 239000004065 semiconductor Substances 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 description 2
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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]
Abstract
The utility model discloses a kind of PWM light adjusting circuits, including rectifier bridge, Voltage stabilizing module, control module, drive module and switch module；The rectifier bridge input terminal connects external dc power, the output end of the rectifier bridge and the input terminal of Voltage stabilizing module and the power end of drive module connect, the output end of Voltage stabilizing module provides operating voltage for control module, the input terminal of control module is connected with input module, the output end of control module is connect with drive module and switch module respectively, the output end of the drive module connects the positive terminal of LED lamp, the negative pole end of the switch module connection LED lamp.The utility model realizes three-stage dimming, stepless dimming by soft-touch control；The anti-radio interference characteristic of the utility model is good simultaneously.
Description
Technical field
The utility model relates to electronic circuit technology field more particularly to a kind of PWM light adjusting circuits.
Background technique
LED is referred to as forth generation light source, has energy-saving and environmental protection, safety, service life length, low-power consumption, low-heat, high brightness, prevents
Water, it is miniature, shockproof, it is easy light modulation, light beam concentrate, easy maintenance the features such as, can be widely applied to it is various instruction, display, decoration,
The fields such as backlight, general lighting.
In LED lamp application, switch mostly uses button switch and mechanical switch greatly, these switches are easily ground when using
Damage, and night needs to specific position to touch switch, is not easy to find, it has not been convenient to use.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of PWM light modulation electricity according to above-mentioned the deficiencies in the prior art
Road.
The technical solution of the utility model is as follows: PWM light adjusting circuit, including rectifier bridge, Voltage stabilizing module, control module, drive
Dynamic model block and switch module；The rectifier bridge input terminal connects external dc power, the output end of the rectifier bridge and pressure stabilizing
The input terminal of module is connected with the power end of drive module, and the output end of Voltage stabilizing module provides operating voltage for control module, control
The input terminal of molding block is connected with input module, and the output end of control module is connect with drive module and switch module respectively, institute
The output end for stating drive module connects the positive terminal of LED lamp, the negative pole end of the switch module connection LED lamp.
Preferably, the input module is touch key-press.
Preferably, the control module includes chip U3, the Touch foot of chip U3 pass sequentially through resistance R6, capacitor C8 with
Input module connection, the VSS foot ground connection of chip U3, the VDD foot of chip U3 connect 5V power supply, and the VDD foot of chip U3 passes through capacitor
C9 ground connection, the TS foot of chip U3 are grounded by resistance R9 connection 5V power supply, the TS foot of chip U3 by resistance R10, capacitor CS0 with
Capacitor CS1 is connected in parallel on respectively between the CS1 foot of chip U3 and the CS0 foot of chip U3, and the CS0 foot of chip U3 is connect by resistance R7
Ground, capacitor C10 are connected in parallel on the both ends of resistance R7, and for the MS foot of chip U3 by resistance R2 connection 5V power supply, the MS foot of chip U3 is logical
Cross resistance R4 ground connection, the PWM foot of chip U3 is grounded by resistance R5, the PWM foot of chip U3 by resistance R8 respectively with drive mould
Block is connected with switch module.
Preferably, the model QT1692-1 of chip U3.
Preferably, the drive module includes chip U1, and the PWM foot of chip U1 passes through the PWM foot of resistance R8 and chip U3
Connection, the Vin foot of chip U1 and the output end of rectifier bridge connect, and the Vin foot of chip U1 passes through the SW foot of inductance L1 and chip U1
It is connected with inductance B1, Sense+ foot, the resistance that the other end of inductance B1 passes through diode D3 and capacitor C2, capacitor C6, chip U1
CS0 is connected with resistance CS1, the other end and the other end of resistance CS1, the cathode and LED of resistance R3, voltage-stabiliser tube D2 of resistance CS0
The positive terminals of lamps and lanterns connects, and the other end of resistance R3 is connect with the Sense- foot of chip U1, the other end of capacitor C2, capacitor C6
The other end, the anode of voltage-stabiliser tube, chip U1 Gnd foot be grounded, the Comp foot of chip U1 is grounded by capacitor C3, chip U1's
VDD foot is grounded by capacitor C4, and the Vin foot of chip U1 is grounded by capacitor C5.
Preferably, the model SD42560 of chip U1.
Preferably, the switching tube is metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 is connected by the PWM foot of resistance R8 and chip U3
It connects, the source electrode ground connection of metal-oxide-semiconductor Q1, the drain electrode of metal-oxide-semiconductor Q1 and the negative pole end of LED lamp connect.
Preferably, the Voltage stabilizing module includes chip U2, the model CJ7805 of chip U2.
Preferably, the rectifier bridge is sequentially connected by 4 diode head and the tail and is formed.
The utility model has the following beneficial effects: realizing three-stage dimming, stepless dimming by soft-touch control；This reality simultaneously
It is good with novel anti-radio interference characteristic.
Detailed description of the invention
Fig. 1 is the circuit connection diagram of the utility model.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
As shown in Figure 1, the utility model specific embodiment provide PWM light adjusting circuit, including rectifier bridge, Voltage stabilizing module,
Control module, drive module and switch module；The rectifier bridge input terminal connects external dc power, the rectifier bridge it is defeated
The power end of the input terminal and drive module of outlet and Voltage stabilizing module connects, and the output end of Voltage stabilizing module provides work for control module
Make voltage, the input terminal of control module is connected with input module, the output end of control module respectively with drive module and switching molding
Block connection, the output end of the drive module connect the positive terminal of LED lamp, and the switch module connection LED lamp is born
Extremely.
Control module includes chip U3, and the Touch foot of the model QT1692-1 of chip U3, chip U3 pass sequentially through resistance
R6, capacitor C8 are connect with input module, and input module is touch key-press, the VSS foot ground connection of chip U3, the VDD foot company of chip U3
5V power supply is connect, the VDD foot of chip U3 is grounded by capacitor C9, and the TS foot of chip U3 passes through resistance R9 connection 5V power supply, chip U3
TS foot be grounded by resistance R10, capacitor CS0 and capacitor CS1 are connected in parallel on the CS1 foot of chip U3 and the CS0 foot of chip U3 respectively
Between, the CS0 foot of chip U3 is grounded by resistance R7, and capacitor C10 is connected in parallel on the both ends of resistance R7, and the MS foot of chip U3 passes through electricity
R2 connection 5V power supply is hindered, the MS foot of chip U3 is grounded by resistance R4, and the PWM foot of chip U3 is grounded by resistance R5, chip U3
PWM foot connect with drive module and switch module respectively by resistance R8.
Drive module includes chip U1, and the PWM foot of the model SD42560 of chip U1, chip U1 pass through resistance R8 and core
The PWM foot of piece U3 connects, and the Vin foot of chip U1 and the output end of rectifier bridge connect, and the Vin foot of chip U1 passes through inductance L1 and core
The SW foot of piece U1 is connected with inductance B1, and the other end of inductance B1 passes through diode D3 and capacitor C2, capacitor C6, chip U1
Sense+ foot, resistance CS0 are connected with resistance CS1, the other end of resistance CS0 and the other end, the resistance R3, voltage-stabiliser tube of resistance CS1
The cathode of D2 is connected with the positive terminal of LED lamp, and the other end of resistance R3 is connect with the Sense- foot of chip U1, and capacitor C2's is another
One end, the other end of capacitor C6, the anode of voltage-stabiliser tube, chip U1 Gnd foot be grounded, the Comp foot of chip U1 passes through capacitor C3
Ground connection, the VDD foot of chip U1 are grounded by capacitor C4, and the Vin foot of chip U1 is grounded by capacitor C5.
Switching tube is metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 is connect by resistance R8 with the PWM foot of chip U3, metal-oxide-semiconductor Q1's
Source electrode ground connection, the drain electrode of metal-oxide-semiconductor Q1 and the negative pole end of LED lamp connect.
The Voltage stabilizing module includes chip U2, the input terminal of the model CJ7805 of chip U2, chip U2 and rectifier bridge
The output end of cathode output end connection, chip U2 exports 5V power supply, and the output end of chip U2 is provided with shunt capacitance C7.
Rectifier bridge is sequentially connected by 4 diode head and the tail and is formed.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
1. a kind of PWM light adjusting circuit, it is characterised in that: including rectifier bridge, Voltage stabilizing module, control module, drive module and open
Close module；The rectifier bridge input terminal connects external dc power, the output end of the rectifier bridge and the input terminal of Voltage stabilizing module
It is connected with the power end of drive module, the output end of Voltage stabilizing module provides operating voltage, the input of control module for control module
End is connected with input module, and the output end of control module is connect with drive module and switch module respectively, the drive module
Output end connects the positive terminal of LED lamp, the negative pole end of the switch module connection LED lamp.
2. PWM light adjusting circuit according to claim 1, it is characterised in that: the input module is touch key-press.
3. PWM light adjusting circuit according to claim 1, it is characterised in that: the control module includes chip U3, chip U3
Touch foot pass sequentially through resistance R6, capacitor C8 is connect with input module, the VSS foot of chip U3 ground connection, the VDD foot of chip U3
5V power supply is connected, the VDD foot of chip U3 is grounded by capacitor C9, and the TS foot of chip U3 passes through resistance R9 connection 5V power supply, chip
The TS foot of U3 is grounded by resistance R10, and capacitor CS0 and capacitor CS1 are connected in parallel on the CS1 foot of chip U3 and the CS0 of chip U3 respectively
Between foot, the CS0 foot of chip U3 is grounded by resistance R7, and capacitor C10 is connected in parallel on the both ends of resistance R7, and the MS foot of chip U3 passes through
Resistance R2 connection 5V power supply, the MS foot of chip U3 are grounded by resistance R4, and the PWM foot of chip U3 is grounded by resistance R5, chip
The PWM foot of U3 is connect with drive module and switch module respectively by resistance R8.
4. PWM light adjusting circuit according to claim 3, it is characterised in that: the model QT1692-1 of chip U3.
5. PWM light adjusting circuit according to claim 1, it is characterised in that: the drive module includes chip U1, chip U1
PWM foot connect with the PWM foot of chip U3 by resistance R8, the output end connection of the Vin foot and rectifier bridge of chip U1, chip U1
Vin foot connect with the SW foot of chip U1 and inductance B1 by inductance L1, the other end of inductance B1 passes through diode D3 and capacitor
C2, capacitor C6, the Sense+ foot of chip U1, resistance CS0 are connected with resistance CS1, and the other end of resistance CS0 is another with resistance CS1's
One end, resistance R3, the cathode of voltage-stabiliser tube D2 are connected with the positive terminal of LED lamp, and the other end of resistance R3 is with chip U1's
Sense- foot connection, the other end of capacitor C2, the other end of capacitor C6, the anode of voltage-stabiliser tube, chip U1 Gnd foot be grounded,
The Comp foot of chip U1 is grounded by capacitor C3, and the VDD foot of chip U1 is grounded by capacitor C4, and the Vin foot of chip U1 passes through electricity
Hold C5 ground connection.
6. PWM light adjusting circuit according to claim 5, it is characterised in that: the model SD42560 of chip U1.
7. PWM light adjusting circuit according to claim 1, it is characterised in that: the switching tube is metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1's
Grid is connect by resistance R8 with the PWM foot of chip U3, and the source electrode of metal-oxide-semiconductor Q1 is grounded, the drain electrode of metal-oxide-semiconductor Q1 and LED lamp
Negative pole end connection.
8. PWM light adjusting circuit according to claim 1, it is characterised in that: the Voltage stabilizing module includes chip U2, chip U2
Model CJ7805.
9. PWM light adjusting circuit according to claim 1, it is characterised in that: the rectifier bridge by 4 diodes head and the tail successively
Connection composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137926.5U CN208675580U (en) | 2018-07-18 | 2018-07-18 | PWM light adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137926.5U CN208675580U (en) | 2018-07-18 | 2018-07-18 | PWM light adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208675580U true CN208675580U (en) | 2019-03-29 |
Family
ID=65830481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821137926.5U Active CN208675580U (en) | 2018-07-18 | 2018-07-18 | PWM light adjusting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208675580U (en) |
-
2018
- 2018-07-18 CN CN201821137926.5U patent/CN208675580U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP02 | Change in the address of a patent holder |
Address after: Building 1, No. 253 Henglijun Road, Hengli Town, Dongguan City, Guangdong Province, 523460 Patentee after: DONGGUAN GUANQING INTELLIGENT LIGHTING TECHNOLOGY Co.,Ltd. Address before: 523000 No.1 Hengquan Industrial Zone, Hengli Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN GUANQING INTELLIGENT LIGHTING TECHNOLOGY Co.,Ltd. |