CN105487442A - Reset switch mute function synchronous control circuit - Google Patents
Reset switch mute function synchronous control circuit Download PDFInfo
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- CN105487442A CN105487442A CN201510900867.7A CN201510900867A CN105487442A CN 105487442 A CN105487442 A CN 105487442A CN 201510900867 A CN201510900867 A CN 201510900867A CN 105487442 A CN105487442 A CN 105487442A
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- circuit
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- triode
- diode
- reset switch
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24131—Noise rejection, shielding board, bus, lines
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a reset switch mute function synchronous control circuit, which mainly comprises electrolytic capacitors, resistors, triodes, diodes, a capacitor and a reset key. When the reset is pressed down, one path of the circuit is connected to the ground through one diode and one triode, and outputs a high-level signal to a mute control end; and meanwhile, the other path of the circuit is grounded through one diode and realizes a function of mute power amplification. The circuit design of the reset switch mute function synchronous control circuit is completely realized through hardware, thereby eliminating horn noise caused when pressing the reset switch to power off; and the circuit is simple, reliable and practical, and has a vehicle-mounted multimedia aspect application prospect.
Description
Technical field
The present invention relates to a kind of electronic circuit, be specifically related to a kind of circuit of reset switch synchro control mute function.
Background technology
Mute circuit is as an important component part of electronic product, " whip " sound that overshoot voltage produces can be eliminated in the process of the switching on and shutting down of televisor, vehicle mounted multimedia etc., reset, particularly when shutting down, due to the change of supply voltage, " whip " sound that transient impact makes audio effect processing module or power amplifier send can make user's experience sense be deteriorated, the quality of equipment is affected, for this reason mute circuit arrange very necessary.
A scheme of prior art adopts multiple triode to be combined into mute circuit for open and close, the I/O mouth of MCU is coordinated to control power amplifier, multiple triode ON and cut-off is controlled by the high-low voltage of the I/O mouth output mute signal of MCU, thus drag down or draw high mute signal, inputing to power amplifier, to realize switch quiet, but this circuit does not relate to quiet control during reset, does not have the big current produced during controlled discharge.
A technical scheme of prior art controls mute function, adopts the quiet protected location of switching on and shutting down, the quiet unit that resets, audio mute unit, and it adopts complicated circuit design, adds energy consumption and the circuit cost of circuit, is unsuitable for applying.
Summary of the invention
Based on the defect of prior art, the invention provides a kind of circuit of reset switch synchro control mute function, at least comprise following components and parts: the first electrochemical capacitor, the first resistance, the second resistance, the first triode, the 3rd resistance, the second electrochemical capacitor, the 4th resistance, the first diode, the 5th resistance, the second triode, reset key, the second diode, electric capacity, the 6th resistance, the 7th resistance.The terminal be connected with described circuit has: quiet control end, MCU button, MCU power supply terminal, the quiet terminal of MCU, power amplifier are standby.
Described first triode is NPN type triode, and the second triode is PNP type triode.
Described first electrochemical capacitor one end ground connection, the other end connects the first resistance, the second resistance and the quiet terminal of MCU respectively, and the other end of the first resistance is connected with MCU power supply terminal.The other end of the second resistance is connected with the base electrode of the first triode, grounded emitter, the collector of the first triode are connected with the 3rd resistance, the other end of described 3rd resistance is connected with the positive pole of the second electrochemical capacitor, the first diode, the 4th resistance simultaneously, the other end ground connection of the second electrochemical capacitor is also connected with one end of reset key, and the negative pole of the first diode is connected with the other end of reset key and connects MCU button simultaneously.4th resistance connects MCU power supply terminal by the 5th resistance on the one hand, connects the base electrode of the second triode on the other hand, and the emitter of described second triode connects MCU power supply terminal, and collector connects quiet control end.Electric capacity one end ground connection, the other end respectively with the 7th resistance, the second diode, power amplifier is standby is connected, another termination DC output power of the 7th resistance, the negative pole of the second diode is connected with MCU button, the 6th resistance and Capacitance parallel connection.
The present invention also provides a kind of implementation method of circuit of reset switch synchro control mute function: after pressing reset key, and a road, through the first diode and the conducting over the ground of the second triode, exports high level signal to quiet control end.An other road is through the conducting over the ground of the second diode simultaneously, makes power amplifier treat under-chassis change in voltage, thus realizes the quiet effect of power amplifier.
Further, the circuit of reset switch synchro control mute function of the present invention also comprises delay circuit, described delay circuit comprises a resistance, an electric capacity, one end ground connection of electric capacity, the other end is connected with resistance, resistance one end is connected with electric capacity and is provided with circuit first access port, and the other end is circuit second access port.Described delay circuit and the first diodes in parallel.
Further, the circuit of reset switch synchro control mute function of the present invention also comprises a vibrating circuit, and described vibrating circuit comprises connecting circuit output terminal, circuit incoming end, the 8th resistance, the 3rd triode and mini vibrator.Described 8th resistance one end connecting circuit output terminal, the other end connects the base electrode of the 3rd triode, and the collector of the 3rd triode is connected with Vib., the grounded emitter of the 3rd triode, the other end of mini vibrator and circuit incoming end.Mechanical part, described mini vibrator is arranged on reset key inside.
The circuit in parallel that described vibrating circuit consists of circuit output end, circuit incoming end and the 4th resistance R19, the first diode D17, the second triode.
The object that vibrating circuit is arranged is, when reset key is pressed, instantaneous high level makes vibrating circuit be in conducting state, mini vibrator starts vibration, and transfers vibrations to reset key, operator by doigte to vibrating, thus directly confirm to reset to complete, and screen need not be seen, also need not owing to worrying whether reset key repeats to press by reset key by putting in place, thus cause circuit load excessive.
Further, described vibrating circuit also comprises a LED signal lamp, connects with mini vibrator.
Further, described vibrating circuit also comprises a hummer, connects with mini vibrator.
The present invention's optional embodiment, reset switch in the circuit of described reset switch synchro control mute function can be substituted by ON-OFF control circuit, and described ON-OFF control circuit comprises circuit input terminal, circuit output terminal, the 3rd diode, the 4th diode, the 3rd electrochemical capacitor, the 9th resistance and the tenth resistance.Described 9th resistance one end ground connection, negative pole and the circuit input terminal of the other end and the 3rd diode are connected, the positive pole of the 3rd diode is connected with the negative pole of the tenth resistance with the 4th diode, and the tenth resistance is connected with power supply, and the positive pole of the 4th diode is connected with circuit output terminal.
The circuit input terminal of described ON-OFF control circuit and circuit output terminal, be connected to emitter and the base electrode of the second triode.
The purposes of described circuit applies on mobile unit, is especially applied on vehicle mounted multimedia.
The circuit of the reset switch synchro control mute function that the present invention relates to, its circuit design, completely by hardware implementing, is eliminated because press reset switch power-off to produce loudspeaker " whip " sound.The present invention passes through the utilization of triode, diode and electric capacity and ground-electrode, and make instantaneous high electric current be able to conducting, and it is quiet to realize system, circuit of the present invention is simple, reliable, practical, has the prospect of application in vehicle mounted multimedia.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the reset switch synchro control mute function of the embodiment of the present invention 1.
Embodiment
Below by specific embodiment, further technical scheme of the present invention is specifically described.Should be appreciated that, the following examples just as illustrating, and do not limit the scope of the invention, and the apparent change made according to the present invention of those skilled in the art simultaneously and modification are also contained within the scope of the invention.
Embodiment 1
The circuit of a kind of reset switch synchro control mute function as shown in Figure 1, comprises following components and parts: the first electrochemical capacitor EC1, the first resistance R15, the second resistance R17, the first triode Q6, the 3rd resistance R18, the second electrochemical capacitor EC2, the 4th resistance R19, the first diode D17, the 5th resistance R20, the second triode Q7, reset key RESET, the second diode D5, electric capacity C11, the 6th resistance R25, the 7th resistance R26.The terminal be connected with described mute circuit has: quiet control end AUDIO_MUTE, MCU button MCU_KEY, MCU power supply terminal MCU_VCC, MCU quiet terminal MCU_MUTE, the standby ST-BY of power amplifier.
Described first triode Q6 is NPN type triode, and the second triode Q7 is PNP type triode.
First electrochemical capacitor EC1 one end ground connection, the other end connects the first resistance R15, the quiet terminal MCU_MUTE of the second resistance R17 and MCU respectively, and the other end of the first resistance is connected with MCU power supply terminal MCU_VCC.The other end of the second resistance R17 is connected with the base electrode of the first triode Q6, grounded emitter, the collector of the first triode Q6 are connected with the 3rd resistance R18, the other end of described 3rd resistance R18 is connected with the positive pole of the second electrochemical capacitor EC2, the first diode D17, the 4th resistance R19 simultaneously, the other end ground connection of the second electrochemical capacitor EC2 is also connected with one end of reset key RESET, and the negative pole of the first diode D17 is connected with the other end of reset key RESET and connects MCU button MCU_KEY simultaneously.4th resistance R19 mono-aspect connects MCU power supply terminal MCU_VCC by the 5th resistance R20, connect the base electrode of the second triode Q7 on the other hand, the emitter of described second triode Q7 connects MCU power supply terminal MCU_VCC, and collector connects quiet control end AUDIO_MUTE.Electric capacity C11 one end ground connection, the other end is connected with the 7th resistance R26, the second diode D5, the standby ST-BY of power amplifier respectively, another termination DC output power of 7th resistance, the negative pole of the second diode D5 is connected with MCU button MCU_KEY, and the 6th resistance is in parallel with electric capacity C11.
The implementation method of the circuit of reset switch synchro control mute function: after pressing reset key RESET, a road, through the first diode D17 and the second triode Q7 conducting over the ground, exports high level signal to quiet control end AUDIO_MUTE.An other road is through the second diode D5 conducting over the ground simultaneously, makes power amplifier standby ST-BY pin change in voltage, thus realizes the quiet effect of power amplifier.
Embodiment 2
The present embodiment is on the basis of embodiment 1, add a delay circuit, described delay circuit comprises a resistance, an electric capacity, one end ground connection of electric capacity, the other end is connected with resistance, resistance one end is connected with electric capacity and is provided with circuit first access port, and the other end is circuit second access port.Described delay circuit is in parallel with the first diode D17.
The reset switch of embodiment 1 can be replaced by ON-OFF control circuit, and described ON-OFF control circuit comprises circuit input terminal, circuit output terminal, the 3rd diode, the 4th diode, the 3rd electrochemical capacitor, the 9th resistance and the tenth resistance.Described 9th resistance one end ground connection, negative pole and the circuit input terminal of the other end and the 3rd diode are connected, the positive pole of the 3rd diode is connected with the negative pole of the tenth resistance with the 4th diode, and the tenth resistance is connected with power supply, and the positive pole of the 4th diode is connected with circuit output terminal.The circuit input terminal of described ON-OFF control circuit and circuit output terminal, be connected to emitter and the base electrode of the second triode.
Embodiment 3
The present embodiment, on the basis of embodiment 1, adds a vibrating circuit, and described vibrating circuit comprises connecting circuit output terminal, circuit incoming end, the 8th resistance, the 3rd triode and mini vibrator.Described 8th resistance one end connecting circuit output terminal, the other end connects the base electrode of the 3rd triode, and the collector of the 3rd triode is connected with Vib., the grounded emitter of the 3rd triode, the other end of mini vibrator and circuit incoming end.Mechanical part, described mini vibrator is arranged on reset key inside.
The circuit in parallel that described vibrating circuit consists of circuit output end, circuit incoming end and the 4th resistance R19, the first diode D17, the second triode.The object that vibrating circuit is arranged is, when reset key is pressed, instantaneous high level makes vibrating circuit be in conducting state, mini vibrator starts vibration, and transfers vibrations to reset key, operator by doigte to vibrating, thus directly confirm to reset to complete, and screen need not be seen, also need not, owing to worrying whether reset key repeats to press by reset key by putting in place, cause circuit load excessive.Described vibrating circuit also comprises a LED signal lamp, connects with mini vibrator.
Claims (8)
1. the circuit of reset switch synchro control mute function, at least comprises following components and parts: the first electrochemical capacitor, the first resistance, the second resistance, the first triode, the 3rd resistance, the second electrochemical capacitor, the 4th resistance, the first diode, the 5th resistance, the second triode, reset key, the second diode, electric capacity, the 6th resistance, the 7th resistance; The terminal be connected with the circuit of described reset switch synchro control mute function has: quiet control end, MCU button, MCU power supply terminal, the quiet terminal of MCU, power amplifier are standby;
Described first triode is NPN type triode, and the second triode is PNP type triode;
First electrochemical capacitor one end ground connection, the other end connects the first resistance, the second resistance and the quiet terminal of MCU respectively, and the other end of the first resistance is connected with MCU power supply terminal; The other end of the second resistance is connected with the base electrode of the first triode, grounded emitter, the collector of the first triode are connected with the 3rd resistance, the other end of described 3rd resistance is connected with the positive pole of the second electrochemical capacitor, the first diode, the 4th resistance simultaneously, the other end ground connection of the second electrochemical capacitor is also connected with one end of reset key, and the negative pole of the first diode is connected with the other end of reset key and connects MCU button simultaneously; 4th resistance connects MCU power supply terminal by the 5th resistance on the one hand, connects the base electrode of the second triode on the other hand, and the emitter of described second triode connects MCU power supply terminal, and collector connects quiet control end; Electric capacity one end ground connection, the other end respectively with the 7th resistance, the second diode, power amplifier is standby is connected, another termination DC output power of the 7th resistance, the negative pole of the second diode is connected with MCU button, the 6th resistance and Capacitance parallel connection.
2. the circuit of reset switch synchro control mute function according to claim 1, it is characterized in that: described circuit also comprises delay circuit, described delay circuit comprises a resistance, an electric capacity, one end ground connection of electric capacity, the other end is connected with resistance, resistance one end is connected with electric capacity and is provided with circuit first access port, and the other end is circuit second access port; Described delay circuit and the first diodes in parallel.
3. the circuit of reset switch synchro control mute function according to claim 1, it is characterized in that: described circuit also comprises a vibrating circuit, described vibrating circuit comprises connecting circuit output terminal, circuit incoming end, the 8th resistance, the 3rd triode and mini vibrator; Described 8th resistance one end connecting circuit output terminal, the other end connects the base electrode of the 3rd triode, and the collector of the 3rd triode is connected with Vib., the grounded emitter of the 3rd triode, the other end of mini vibrator and circuit incoming end; Mechanical part, described mini vibrator is arranged on reset key inside; The circuit in parallel that described vibrating circuit consists of circuit output end, circuit incoming end and the 4th resistance R19, the first diode D17, the second triode;
When reset key is pressed, instantaneous high level makes vibrating circuit be in conducting state, and mini vibrator starts vibration, and transfers vibrations to reset key, operator by doigte to vibrating.
4. the circuit of reset switch synchro control mute function according to claim 3, is characterized in that: described vibrating circuit also comprises a LED signal lamp, connects with described mini vibrator.
5. the circuit of reset switch synchro control mute function according to claim 3, is characterized in that: described vibrating circuit also comprises a hummer, connects with described mini vibrator.
6. the circuit of arbitrary reset switch synchro control mute function according to claims 1 to 5, is characterized in that: described reset switch is substituted by ON-OFF control circuit;
Described ON-OFF control circuit comprises circuit input terminal, circuit output terminal, the 3rd diode, the 4th diode, the 3rd electrochemical capacitor, the 9th resistance and the tenth resistance; Described 9th resistance one end ground connection, negative pole and the circuit input terminal of the other end and the 3rd diode are connected, the positive pole of the 3rd diode is connected with the negative pole of the tenth resistance with the 4th diode, and the tenth resistance is connected with power supply, and the positive pole of the 4th diode is connected with circuit output terminal; The circuit input terminal of described ON-OFF control circuit and circuit output terminal, be connected to emitter and the base electrode of the second triode.
7. an implementation method for the circuit of reset switch synchro control mute function, is characterized in that: described method is the circuit based on the arbitrary reset switch synchro control mute function described in claim 1 ~ 6;
After pressing reset key, a road, through the first diode and the conducting over the ground of the second triode, exports high level signal to quiet control end; An other road is through the conducting over the ground of the second diode simultaneously, makes power amplifier treat under-chassis change in voltage, thus realizes power amplifier mute function.
8. the purposes based on the circuit of the reset switch synchro control mute function of triode, it is characterized in that: described circuit is based on the circuit of the arbitrary reset switch synchro control mute function described in Claims 1 to 5, and described circuit application is in the multimedia of mobile unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900867.7A CN105487442B (en) | 2015-12-09 | 2015-12-09 | The circuit of reset switch synchronous control mute function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900867.7A CN105487442B (en) | 2015-12-09 | 2015-12-09 | The circuit of reset switch synchronous control mute function |
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| Publication Number | Publication Date |
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| CN105487442A true CN105487442A (en) | 2016-04-13 |
| CN105487442B CN105487442B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510900867.7A Active CN105487442B (en) | 2015-12-09 | 2015-12-09 | The circuit of reset switch synchronous control mute function |
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| CN (1) | CN105487442B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406480A (en) * | 2016-11-11 | 2017-02-15 | 上海雍敏信息科技有限公司 | High-level effective switch reset circuit |
| CN108322223A (en) * | 2018-04-02 | 2018-07-24 | 延锋伟世通电子科技（上海）有限公司 | A kind of state retaining circuit with release function |
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| US20030085402A1 (en) * | 2001-11-06 | 2003-05-08 | Tay Hiok Nam | CMOS image sensor with noise cancellation |
| CN201533288U (en) * | 2009-10-30 | 2010-07-21 | 深圳创维数字技术股份有限公司 | On-off mute circuit and digital television receiver with same |
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| CN202145669U (en) * | 2011-05-06 | 2012-02-15 | 青岛海信宽带多媒体技术有限公司 | Mute circuit |
| CN203015093U (en) * | 2012-12-26 | 2013-06-19 | Tcl集团股份有限公司 | Vehicle-mounted multimedia mute circuit |
| CN205334136U (en) * | 2015-12-09 | 2016-06-22 | 江苏天安智联科技股份有限公司 | Circuit of reset switch synchro control mute function |
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2015
- 2015-12-09 CN CN201510900867.7A patent/CN105487442B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085402A1 (en) * | 2001-11-06 | 2003-05-08 | Tay Hiok Nam | CMOS image sensor with noise cancellation |
| CN201533288U (en) * | 2009-10-30 | 2010-07-21 | 深圳创维数字技术股份有限公司 | On-off mute circuit and digital television receiver with same |
| CN101867854A (en) * | 2010-06-08 | 2010-10-20 | 吟飞科技(江苏)有限公司 | Mute control circuit |
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| CN203015093U (en) * | 2012-12-26 | 2013-06-19 | Tcl集团股份有限公司 | Vehicle-mounted multimedia mute circuit |
| CN205334136U (en) * | 2015-12-09 | 2016-06-22 | 江苏天安智联科技股份有限公司 | Circuit of reset switch synchro control mute function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406480A (en) * | 2016-11-11 | 2017-02-15 | 上海雍敏信息科技有限公司 | High-level effective switch reset circuit |
| CN106406480B (en) * | 2016-11-11 | 2024-01-12 | 深圳市万阳光电有限公司 | High-level effective switch reset circuit |
| CN108322223A (en) * | 2018-04-02 | 2018-07-24 | 延锋伟世通电子科技（上海）有限公司 | A kind of state retaining circuit with release function |
| CN108322223B (en) * | 2018-04-02 | 2024-02-09 | 延锋伟世通电子科技（上海）有限公司 | State holding circuit with release function |
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| CN105487442B (en) | 2018-07-13 |
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