CN113286399A - PWM drive circuit of many luminance light show stage property - Google Patents
PWM drive circuit of many luminance light show stage property Download PDFInfo
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- CN113286399A CN113286399A CN202110452778.6A CN202110452778A CN113286399A CN 113286399 A CN113286399 A CN 113286399A CN 202110452778 A CN202110452778 A CN 202110452778A CN 113286399 A CN113286399 A CN 113286399A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 3
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 239000002537 cosmetic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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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]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
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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]
- H05B45/10—Controlling the intensity of the light
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a PWM (pulse-width modulation) driving circuit of a multi-brightness lamplight display prop, which comprises a signal conversion circuit, wherein the signal conversion circuit is respectively connected with a high-power driving circuit and a driving input interface, the high-power driving circuit is connected with a driving output interface, the signal conversion circuit comprises a triode Q1 and a triode Q5, and the high-power driving circuit comprises a triode Q9, a triode Q13 and a MOS (metal oxide semiconductor) tube Q17. The invention adjusts the voltage matched with the final output by taking the triode Q1 and the triode Q5 as the core, ensures enough driving capability by forming a totem-pole circuit by the triode Q9 and the Q13, realizes the modulation of 0-100% of the light brightness of the display prop, and ensures that the display achieves better display effect.
Description
Technical Field
The invention relates to the field of cosmetic lamplight display props, in particular to a PWM (pulse-width modulation) driving circuit of a multi-brightness lamplight display prop.
Background
Present cosmetics show stage property divide into to take the lamp to imitate the show and do not take the lamp to imitate the show two, take the lamp to imitate the show and adopt fixed luminance or the fixed luminance of many grades to adjust to stick out the showpiece effect more, the part of light adopts fixed luminance more in the present cosmetics show stage property in the market, in use because the light is complicated changeable in the site environment, fixed light luminance can only be under relatively fixed environment to the better effect of showpiece outstanding, the not fine show effect of showpiece under the environment of difference or change.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a PWM (pulse-width modulation) driving circuit for a multi-brightness lamplight display prop.
In order to achieve the purpose, the invention adopts the following technical scheme:
the PWM driving circuit of the multi-brightness lamplight display prop comprises a signal conversion circuit, wherein the signal conversion circuit is respectively connected with a high-power driving circuit and a driving input interface, the high-power driving circuit is connected with a driving output interface, the signal conversion circuit comprises a triode Q1 and a triode Q5, and the high-power driving circuit comprises a triode Q9, a triode Q13 and a MOS (metal oxide semiconductor) tube Q17.
Preferably, the base of the triode Q1 is connected with a resistor R1 and a resistor R8 respectively, the resistor R1 is connected with the driving input interface, the resistor R8 is connected with the emitter of the triode Q1, and the connection point of the resistor R8 and the emitter of the triode Q1 is grounded.
Preferably, the base of the triode Q5 is connected with a resistor R15 and a resistor R22 respectively, the resistor R15 is connected with the collector of the triode Q1, one end of the resistor R22 far away from the resistor R15 is connected with the emitter of the triode Q5, the collector of the triode Q5 is connected with a resistor R29, and the resistor R29 is grounded.
Preferably, the collector of the transistor Q9 is connected to the emitter of the transistor Q5, the collector of the transistor Q9 and the emitter of the transistor Q5 are commonly connected to an external power source, and the base of the transistor Q9 is connected to the collector of the transistor Q5.
Preferably, the base of the transistor Q13 is connected to the base of the transistor Q9, the emitter of the transistor Q13 is connected to the emitter of the transistor Q9, and the collector of the transistor Q13 is grounded.
Preferably, a source and a gate of the MOS transistor Q17 are connected in parallel with a capacitor C5 and a resistor R43, the source of the MOS transistor Q17 is grounded, one end of the resistor R43 close to the gate of the MOS transistor Q17 is connected with a resistor R36, the resistor R36 is connected with an emitter of the triode Q9 and an emitter of the triode Q13, and a drain of the MOS transistor Q17 is connected with the drive output interface.
The invention has the following beneficial effects:
1. triode Q1 and triode Q5 adjust to the voltage that matches with final output for the core, and triode Q9 and Q13 constitute totem-pole circuit and guarantee sufficient driving capability, make it can drive great load, increase the load capacity of circuit, and MOS pipe Q17 is high-power MOS pipe, and resistance R1 and resistance R36 play certain current-limiting effect.
2. Can be according to the signal in the diversified drive lamp of actual conditions output or lamp area, can amplify the signal according to the lamp type of difference, controller input PWM small signal passes through this PWM drive circuit, can realize the regulation of the change of different light loads, and can realize the modulation to show stage property light luminance 0-100%, adjusts the luminance of show stage property light under the environment of difference to make the showpiece reach better bandwagon effect.
In conclusion, the invention adjusts the voltage matched with the final output by taking the triode Q1 and the triode Q5 as the core, ensures enough driving capability by forming a totem-pole circuit by the triode Q9 and the Q13, and realizes the modulation of 0-100% of the light brightness of the display prop so as to achieve better display effect of the exhibit.
Drawings
FIG. 1 is a circuit diagram of a PWM driving circuit for a multi-brightness light show prop according to the present invention;
fig. 2 is a schematic diagram of an actual installation of a PWM driving circuit of the multi-brightness light display prop according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-2, the PWM driving circuit of the multi-brightness light display prop includes a signal conversion circuit, the signal conversion circuit is respectively connected to a high-power driving circuit and a driving input interface, the high-power driving circuit is connected to a driving output interface, the signal conversion circuit includes a transistor Q1 and a transistor Q5, and the high-power driving circuit includes a transistor Q9, a transistor Q13 and a MOS transistor Q17.
The base electrode of the triode Q1 is respectively connected with a resistor R1 and a resistor R8, the resistor R1 is connected with the driving input interface, the resistor R8 is connected with the emitter electrode of the triode Q1, and the connection point of the resistor R8 and the emitter electrode of the triode Q1 is grounded.
The base electrode of the triode Q5 is respectively connected with a resistor R15 and a resistor R22, the resistor R15 is connected with the collector electrode of the triode Q1, one end of the resistor R22, which is far away from the resistor R15, is connected with the emitter electrode of the triode Q5, the collector electrode of the triode Q5 is connected with a resistor R29, and the resistor R29 is grounded.
The collector of the triode Q9 is connected with the emitter of the triode Q5, the collector of the triode Q9 and the emitter of the triode Q5 are connected with an external power supply together, and the base of the triode Q9 is connected with the collector of the triode Q5.
The base electrode of the triode Q13 is connected with the base electrode of the triode Q9, the emitting electrode of the triode Q13 is connected with the emitting electrode of the triode Q9, and the collecting electrode of the triode Q13 is grounded.
A source electrode and a grid electrode of the MOS tube Q17 are connected with a capacitor C5 and a resistor R43 in parallel, the source electrode of the MOS tube Q17 is grounded, one end, close to the grid electrode of the MOS tube Q17, of the resistor R43 is connected with a resistor R36, the resistor R36 is connected with an emitting electrode of the triode Q9 and an emitting electrode of the triode Q13, and a drain electrode of the MOS tube Q17 is connected with the driving output interface.
When the circuit is used, a control signal is sent to the resistor R1, when the circuit is at a low level, a subsequent circuit is not conducted, the triode Q13 pulls down the MOS transistor Q17 to enable the MOS transistor Q17 to be in a high-resistance state, the load does not work, when the circuit is at a high level, the resistor R8 is a clamping resistor, the normal conduction of the triode Q1 is ensured, the triode Q1 is driven to be conducted after being conducted, the triode Q5 is driven to be conducted, the triode Q5 is conducted, the triode Q9 is driven to be conducted, the MOS transistor Q17 is driven to be conducted, and the load is driven to work after the MOS transistor Q17 is conducted.
Triode Q1 and triode Q5 adjust to the voltage that matches with final output for the core, and triode Q9 and Q13 constitute totem-pole circuit and guarantee sufficient driving capability, make it can drive great load, increase the load capacity of circuit, and MOS pipe Q17 is high-power MOS pipe, and resistance R1 and resistance R36 play certain current-limiting effect.
Can be according to the signal in the diversified drive lamp of actual conditions output or lamp area, can amplify the signal according to the lamp type of difference, controller input PWM small signal passes through this PWM drive circuit, can realize the regulation of the change of different light loads, and can realize the modulation to show stage property light luminance 0-100%, adjusts the luminance of show stage property light under the environment of difference to make the showpiece reach better bandwagon effect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The PWM driving circuit of the multi-brightness lamplight display prop comprises a signal conversion circuit and is characterized in that the signal conversion circuit is respectively connected with a high-power driving circuit and a driving input interface, the high-power driving circuit is connected with a driving output interface, the signal conversion circuit comprises a triode Q1 and a triode Q5, and the high-power driving circuit comprises a triode Q9, a triode Q13 and a MOS (metal oxide semiconductor) tube Q17.
2. The PWM driving circuit of a multi-brightness light display prop according to claim 1, wherein the base of the transistor Q1 is connected with a resistor R1 and a resistor R8 respectively, the resistor R1 is connected with the driving input interface, the resistor R8 is connected with the emitter of the transistor Q1, and the connection point of the resistor R8 and the emitter of the transistor Q1 is grounded.
3. The PWM driving circuit of a multi-brightness light display prop according to claim 1, wherein a resistor R15 and a resistor R22 are respectively connected to a base of the transistor Q5, the resistor R15 is connected to a collector of the transistor Q1, one end of the resistor R22 far away from the resistor R15 is connected to an emitter of the transistor Q5, a resistor R29 is connected to a collector of the transistor Q5, and the resistor R29 is grounded.
4. The PWM driving circuit for a multi-brightness light display prop according to claim 1, wherein a collector of the transistor Q9 is connected to an emitter of a transistor Q5, a collector of the transistor Q9 and an emitter of a transistor Q5 are commonly connected to an external power source, and a base of the transistor Q9 is connected to a collector of a transistor Q5.
5. The PWM driving circuit for a multi-brightness light display prop according to claim 1, wherein a base of the transistor Q13 is connected to a base of a transistor Q9, an emitter of the transistor Q13 is connected to an emitter of a transistor Q9, and a collector of the transistor Q13 is grounded.
6. The PWM driving circuit of a multi-brightness light display prop according to claim 1, wherein a source and a gate of the MOS transistor Q17 are connected in parallel with a capacitor C5 and a resistor R43, the source of the MOS transistor Q17 is grounded, one end of the resistor R43 close to the gate of the MOS transistor Q17 is connected with a resistor R36, the resistor R36 is connected with an emitter of a triode Q9 and an emitter of a triode Q13, and a drain of the MOS transistor Q17 is connected with the driving output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110452778.6A CN113286399A (en) | 2021-04-26 | 2021-04-26 | PWM drive circuit of many luminance light show stage property |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110452778.6A CN113286399A (en) | 2021-04-26 | 2021-04-26 | PWM drive circuit of many luminance light show stage property |
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| CN113286399A true CN113286399A (en) | 2021-08-20 |
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| CN202110452778.6A Pending CN113286399A (en) | 2021-04-26 | 2021-04-26 | PWM drive circuit of many luminance light show stage property |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205213107U (en) * | 2015-11-17 | 2016-05-04 | 深圳市泰吉数字照明技术有限公司 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
| CN107567134A (en) * | 2017-09-06 | 2018-01-09 | 天津津航技术物理研究所 | High power light source dimming control system and method based on PWM |
| WO2018157345A1 (en) * | 2017-03-02 | 2018-09-07 | 深圳市豪恩光电照明股份有限公司 | Led lamp and led brightness regulation circuit |
| CN209267843U (en) * | 2018-09-21 | 2019-08-16 | 深圳市博恩新智科技有限公司 | A kind of low cost bluetooth ad hoc network LED drive circuit |
| US20200245430A1 (en) * | 2018-11-01 | 2020-07-30 | Xiamen Eco Lighting Co. Ltd. | Led driving circuit |
| CN212752233U (en) * | 2020-08-12 | 2021-03-19 | 成都永铭科技有限公司 | MOS tube driving circuit |
-
2021
- 2021-04-26 CN CN202110452778.6A patent/CN113286399A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205213107U (en) * | 2015-11-17 | 2016-05-04 | 深圳市泰吉数字照明技术有限公司 | LED drive power supply of mixing of colors temperature of can adjusting luminance |
| WO2018157345A1 (en) * | 2017-03-02 | 2018-09-07 | 深圳市豪恩光电照明股份有限公司 | Led lamp and led brightness regulation circuit |
| CN107567134A (en) * | 2017-09-06 | 2018-01-09 | 天津津航技术物理研究所 | High power light source dimming control system and method based on PWM |
| CN209267843U (en) * | 2018-09-21 | 2019-08-16 | 深圳市博恩新智科技有限公司 | A kind of low cost bluetooth ad hoc network LED drive circuit |
| US20200245430A1 (en) * | 2018-11-01 | 2020-07-30 | Xiamen Eco Lighting Co. Ltd. | Led driving circuit |
| CN212752233U (en) * | 2020-08-12 | 2021-03-19 | 成都永铭科技有限公司 | MOS tube driving circuit |
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