CN201789614U - Independent control circuit of sound box and display screen - Google Patents
Independent control circuit of sound box and display screen Download PDFInfo
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- CN201789614U CN201789614U CN2010205239694U CN201020523969U CN201789614U CN 201789614 U CN201789614 U CN 201789614U CN 2010205239694 U CN2010205239694 U CN 2010205239694U CN 201020523969 U CN201020523969 U CN 201020523969U CN 201789614 U CN201789614 U CN 201789614U
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Abstract
The utility model relates to an independent control circuit of a sound box and a display screen, which comprises a P-metal-oxide-semiconductor field-effect transistor (P-MOSFET) tube, a video module and an audio module, wherein the video module and the audio module are connected with a power supply, a ganged three-gear switch and/or a ganged four-gear switch are/is arranged at the connecting parts of the video module, the audio module and the power supply, and the on-off operation of the video module and the audio module can be realized through outputting high level or low level. The ganged three-gear switch is connected with the video module in series or in parallel, and the ganged three-gear switch forms the first gear, the second gear and the third gear through a first insertion pin to an eighth insertion pin. Through the arrangement of the ganged three-gear switch and/or the ganged four-gear switch, the utility model carries out the logic distribution of control signals through the on-off operation of the ganged three-gear switch and/or the ganged four-gear switch, the control signals are arranged at corresponding insertion pins, and are connected with or disconnected from the corresponding insertion pins according to different positions of pulling handles, high level or low level can be output for realizing the on-off operation of the video module and the audio module, and the utility model has the characteristics of simple and reasonable structure and long service life and is simple and convenient to operate.
Description
Technical field
The utility model relates to a kind of digital code player, the independent controling circuit of particularly a kind of audio amplifier and display screen.
Background technology
At present, the control of sound channel and display screen realizes by following structure: 1. by button and software Kai Heguan, not too directly perceived in conjunction with control track and display screen, and software occupying system resources simultaneously; 2. independent switch control, but number of switches is many, institute takes up space big, and it is not too convenient that operation is not concentrated and used.
Chinese patent literature CN201378420Y discloses a kind of acoustics on January 6th, 2010, comprise the sound equipment body, on the described sound equipment body demonstration/touching device is set, it is characterized in that: demonstration/touching device comprises central processing element CPU and connectedly is used to receive cpu instruction and then drive controlling LCD display and does the display driver chip of corresponding demonstration, be used for the touch sensible chip of induction touch press-key action etc.Wherein touch key-press is connected with the touch sensible chip.Described central processing element CPU also is connected with audio frequency processing circuit in the sound equipment.It is said that this structure adopts touch panel, overall appearance is easy to operate; Particularly adopt the slidingtype button to be used for volume control and to be furnished with other function singly-bound in its touch key-press, more be adapted to the stereo set characteristics, the touch key-press sense of touch is good, makes operation smooth more, has improved the overall performance of sound equipment.But this structure is comparatively complicated, manufacturing cost is higher and useful life short.Therefore, be necessary to be further improved and perfect.
The utility model content
The purpose of this utility model aims to provide a kind of simple and reasonable, dependable performance, with low cost and can control the audio amplifier of audio amplifier or display screen and the independent controling circuit of display screen separately, to overcome weak point of the prior art.
By a kind of audio amplifier of this purpose design and the independent controling circuit of display screen, comprise P-MOSFET pipe and video module that is connected with power supply and audio-frequency module, its architectural feature is that described video module, audio-frequency module and power supply connection are provided with duplex three position switch and/or duplex four position switch, by output high potential or electronegative potential, to realize the keying of video module, audio-frequency module.
Described duplex three position switch and video module are for being connected in series or being connected in parallel; These duplex three position switch constitute first gear, second gear and the 3rd gear by pin 1～8.
Described pin 5 and pin 6 are connected in series with current-limiting resistance R1 and current-limiting resistance R2 respectively, and pin 5 is connected with the positive pole or the high potential of power supply, be the power-off signal, the end of current-limiting resistance R1 is connected with the first input end of P-MOSFET pipe, the other end ground connection of current-limiting resistance R1; Current-limiting resistance R2 is connected with second input of P-MOSFET pipe, and second input is connected with the input of power supply, and the 3rd output of P-MOSFET pipe is connected with the output of power supply.
Described pin 7 and pin 8 ground connection or electronegative potential are the power supply opening signal; Pin 4 and pin 1 ground connection, and pin 1, pin 4 are connected with current-limiting resistance R3; Pin 2 is connected with the positive pole of video module, and pin 3 is connected with the control signal output ends of video module.
Described duplex four position switch and audio-frequency module are for being connected in series or being connected in parallel; These duplex four position switch constitute first gear, second gear, the 3rd gear and the 4th gear by pin 9～18.
Described pin 9 and pin 10 are connected in series with right audio channel power amplifier chip, current-limiting resistance R4 and current-limiting resistance R5, and pin 14 and pin 18 are connected in series with L channel audio frequency power amplifier chip, current-limiting resistance R6 and current-limiting resistance R7; Pin 11 is connected with pin 16 ground connection.
Described pin 12, pin 13, pin 14, pin 15, pin 17 are connected with audio-frequency module respectively.
Described duplex three position switch, duplex four position switch are provided with and stir handle, and this is stirred handle and links to each other with the pin 1～8 of duplex three position switch or pin 9～18 slips of duplex four position switch; The control signal of duplex three position switch and duplex four position switch is located on the corresponding pin.
The utility model is by setting up duplex three position switch and/or duplex four position switch, utilize its break-make to carry out the assignment of logical of control signal, control signal is located at corresponding pin, be connected with corresponding pin along with the difference of the position of stirring handle or disconnect, by output high potential or electronegative potential, to realize the keying of video module, audio-frequency module; It has simple and reasonable, the characteristics of simple to operation and long service life.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model one embodiment.
Fig. 2 is the circuit theory diagrams of another embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
First embodiment
Referring to Fig. 1, the independent controling circuit of this audio amplifier and display screen comprises P-MOSFET pipe 23 and the video module that is connected with power supply, and P-MOSFET pipe 23 is a normally off.Video module and power supply connection are provided with duplex three position switch 21.Duplex three position switch 21 and video module are for being connected in series, and duplex three position switch 21 constitute first gear, second gear and the 3rd gear by pin 1～8.Duplex three stops to be provided with stirs handle, and this pin 1～8 of stirring handle and duplex three position switch 21 slides and links to each other, by output high potential or electronegative potential, with the keying of realization video module.Pin 5 and pin 6 are connected in series with current-limiting resistance R1 and current-limiting resistance R2 respectively, and the positive pole of pin 5 and power supply is connected, and are the power-off signal.Pin 7 and pin 8 ground connection are the power supply opening signal, pin 4 and pin 1 ground connection, and pin 1, pin 4 be connected with ground by current-limiting resistance R3, is electronegative potential, is the video module shutdown signal.Pin 2 is connected with the positive pole of video module, is high potential, is the video module opening signal, and pin 3 is connected with the control signal output ends of video module.
The end of current-limiting resistance R1 is connected the other end ground connection of current-limiting resistance R1 with the first input end of P-MOSFET pipe 23; Current-limiting resistance R2 is connected with second input of P-MOSFET pipe 23, and second input is connected with the input of power supply, and the 3rd output of P-MOSFET pipe 23 is connected with the output of power supply; Current-limiting resistance R1, R2 and R3 play metering function.
Its operation principle is: 1) when stirring handle and be in the position of first gear, the pin 5 and pin 6 conductings of duplex three position switch 21, the first input end of P-MOSFET pipe 23 is a high potential, P-MOSFET pipe 23 is in off-state, non-transformer output, complete machine is a closed condition, pin 3 and pin 4 conductings simultaneously, and the display screen control signal is output as the pass.
2) be in the position of second gear when toggle switch, the pin 7 and pin 6 conductings of duplex three position switch 21, the first defeated end of P-MOSFET pipe 23 is electronegative potential, P-MOSFET pipe 23 is in conducting state, power supply output, complete machine is an open mode, pin 2 and pin 3 conductings simultaneously, and the display screen control signal is output as out.
3) when toggle switch is in the position of the 3rd gear, two 3 pins that stop 8 and pin 6 conductings, the first defeated end of P-MOSFET pipe 23 is electronegative potential, P-MOSFET pipe 23 is in conducting state, power supply output, complete machine is for leaving, pin 1 and pin 3 conductings simultaneously, and the display screen control signal is output as the pass.
Second embodiment
Referring to Fig. 2, audio-frequency module and power supply connection are provided with duplex four position switch 22, export different high potential or electronegative potential, to realize the keying of audio-frequency module, duplex four position switch 22 and audio-frequency module are for being connected in series, and these duplex four position switch 22 constitute first gear, second gear, the 3rd gear and the 4th gear by pin 9～18.Duplex four position switch 22 are provided with stirs handle, and this is stirred handle and links to each other with 9～18 slips of duplex four position switch 22 pins.Pin 9 and pin 10 are connected in series with right audio channel power amplifier chip 25, current-limiting resistance R4 and current-limiting resistance R5.Pin 14 and pin 18 are connected in series with L channel audio frequency power amplifier chip 24, current-limiting resistance R6 and current-limiting resistance R7; Pin 11 is connected with pin 16 ground connection.Pin 12, pin 13, pin 14, pin 15, pin 17 are connected with audio-frequency module respectively.
Its operation principle is: 1) when stirring handle and be in the position of first gear, the pin 16 and pin 14 conductings of duplex four position switch 22, the control signal of L channel is output as electronegative potential, L channel audio frequency power amplifier chip 24 is in closed condition, pin 11 and pin 13 conductings simultaneously, the control signal of R channel is output as high potential, and right audio channel power amplifier chip 25 is in out state.
2) be in the position of second gear when toggle switch, the pin 16 and pin 15 conductings of duplex four position switch 22, the control signal of L channel is output as high potential, L channel audio frequency power amplifier chip 24 is in open mode, pin 11 and pin 12 conductings simultaneously, the control signal of R channel is output as high potential, and right audio channel power amplifier chip 25 is in open mode.
3) be in the position of the 3rd gear when toggle switch, the pin 16 and pin 17 conductings of duplex four position switch 22, the L channel control signal is output as high potential, L channel audio frequency power amplifier chip 24 is in out state, pin 11 and pin 10 conductings simultaneously, the control signal of R channel is output as electronegative potential, and right audio channel power amplifier chip 25 is in closed condition.
4) be in the position of the 4th gear when toggle switch, the pin 16 and pin 18 conductings of duplex four position switch 22, the control signal of L channel is output as electronegative potential, L channel audio frequency power amplifier chip 24 is in closed condition, pin 11 and pin 9 conductings simultaneously, the control signal of R channel is output as electronegative potential, and right audio channel power amplifier chip 25 is in closed condition, and current-limiting resistance R4, R5, R6 and R7 play metering function.Other is not stated with first embodiment.
Claims (9)
1. the independent controling circuit of audio amplifier and display screen, comprise P-MOSFET pipe (23) and video module that is connected with power supply and audio-frequency module, it is characterized in that described video module, audio-frequency module and power supply connection are provided with duplex three position switch (21) and/or duplex four position switch (22), by output high potential or electronegative potential, to realize the keying of video module, audio-frequency module.
2. according to the independent controling circuit of described audio amplifier of claim 1 and display screen, it is characterized in that described duplex three position switch (21) and video module are for being connected in series or being connected in parallel; These duplex three position switch constitute first gear, second gear and the 3rd gear by pin 1～8.
3. according to the independent controling circuit of described audio amplifier of claim 2 and display screen, it is characterized in that described pin 5 and pin 6 are connected in series with current-limiting resistance R1 and current-limiting resistance R2 respectively, and pin 5 is connected with the positive pole of power supply, the end of current-limiting resistance R1 is connected the other end ground connection of current-limiting resistance R1 with the first input end (23.1) of P-MOSFET pipe (23); Current-limiting resistance R2 is connected with second input (23.2) of P-MOSFET pipe, and second input is connected with the input of power supply, and the 3rd output (23.3) of P-MOSFET pipe is connected with the output of power supply.
4. according to the independent controling circuit of described audio amplifier of claim 3 and display screen, it is characterized in that described pin 7 and pin 8 ground connection.
5. according to the independent controling circuit of described audio amplifier of claim 4 and display screen, it is characterized in that described pin 4 and pin 1 ground connection, and pin 1, pin 4 are connected with current-limiting resistance R3; Pin 2 be connected with the positive pole of video module, pin 3 is connected with the control signal output ends of video module.
6. according to the independent controling circuit of described audio amplifier of claim 1 and display screen, it is characterized in that described duplex four position switch (22) and audio-frequency module are for being connected in series or being connected in parallel; These duplex four position switch constitute first gear, second gear, the 3rd gear and the 4th gear by pin 9～18.
7. according to the independent controling circuit of described audio amplifier of claim 6 and display screen, it is characterized in that described pin 9 and pin 10 and right audio channel power amplifier chip (25), current-limiting resistance R4 and current-limiting resistance R5 are connected in series, pin 14 and pin 18 are connected in series with L channel audio frequency power amplifier chip (24), current-limiting resistance R6 and current-limiting resistance R7; Pin 11 is connected with pin 16 ground connection.
8. according to the independent controling circuit of described audio amplifier of claim 7 and display screen, it is characterized in that described pin 12, pin 13, pin 14, pin 15, pin 17 are connected with audio-frequency module respectively.
9. the independent controling circuit of described according to Claim 8 audio amplifier and display screen, it is characterized in that described duplex three position switch (21), duplex four position switch (22) are provided with and stir handle, this is stirred handle and links to each other with the pin 1～8 of duplex three position switch or pin 9～18 slips of duplex four position switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205239694U CN201789614U (en) | 2010-09-03 | 2010-09-03 | Independent control circuit of sound box and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205239694U CN201789614U (en) | 2010-09-03 | 2010-09-03 | Independent control circuit of sound box and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201789614U true CN201789614U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205239694U Expired - Fee Related CN201789614U (en) | 2010-09-03 | 2010-09-03 | Independent control circuit of sound box and display screen |
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| CN (1) | CN201789614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123168A (en) * | 2019-05-31 | 2019-08-16 | 厦门芯阳科技股份有限公司 | A kind of multi gear position toggle switch and its circuit and multi gear position identification circuit, device |
-
2010
- 2010-09-03 CN CN2010205239694U patent/CN201789614U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110123168A (en) * | 2019-05-31 | 2019-08-16 | 厦门芯阳科技股份有限公司 | A kind of multi gear position toggle switch and its circuit and multi gear position identification circuit, device |
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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 |
Granted publication date: 20110406 Termination date: 20150903 |
|
| EXPY | Termination of patent right or utility model |