CN216980117U - Circuit system for CD player - Google Patents
Circuit system for CD player Download PDFInfo
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- CN216980117U CN216980117U CN202123258421.9U CN202123258421U CN216980117U CN 216980117 U CN216980117 U CN 216980117U CN 202123258421 U CN202123258421 U CN 202123258421U CN 216980117 U CN216980117 U CN 216980117U
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Abstract
The utility model provides a circuit system for a CD player, which has the technical scheme that: the audio processing control circuit is electrically connected with a plurality of functional modules for inputting audio signals and an output module for outputting playing audio signals, and is also electrically connected with a human-computer interaction module for manually operating and adjusting the functions of the record player and a display module for displaying the working state of the record player; the utility model can enhance the practicability of the CD player, solve the problem of single function of the CD player, and has simple circuit structure and lower cost.
Description
[ technical field ] A
The utility model relates to the technical field of disc recorders, in particular to a circuit system for a disc recorder.
[ background ] A method for producing a semiconductor device
A record player, also known as gramophone, is a sound reproducing device, the sound of which is stored in an arc-shaped groove carved on the record plane by an acoustic method, and when playing music, the record is placed on a turntable and rotates under a stylus. Original CD player function singleness can only be used for broadcasting the vinyl record, and the majority is put as the ornament, and the practicality is relatively poor, hardly brings the better music experience of giving people.
In order to perfectly integrate the modern audio technology and the classical art modeling, integrate functionality and decoration, enhance the practicability of a CD player and solve the problem of single function of the CD player, the utility model provides a circuit system for the CD player.
[ Utility model ] content
The utility model provides a circuit system for a CD player, which aims to perfectly integrate the modern audio technology and the classical art modeling, integrate functionality and decoration, enhance the practicability of the CD player and solve the problem of single function of the CD player.
The utility model is realized by the following technical scheme:
a circuit system for a disc player, comprising: the audio processing control circuit is electrically connected with a plurality of functional modules used for inputting audio signals and an output module used for outputting and playing the audio signals, and the audio processing control circuit is also electrically connected with a human-computer interaction module used for manually operating and adjusting the function of a record player and a display module used for displaying the working state of the record player.
The circuit system for a disc player as described above, characterized by: the plurality of functional modules are respectively a CD functional module, a turntable functional module, a tape functional module and a radio functional module.
The circuit system for a disc player as described above, characterized by: the audio processing control circuit is also electrically connected with a Bluetooth receiving circuit for wirelessly connecting external equipment and receiving wireless audio signals, and a wired equipment access circuit for externally connecting wired equipment and receiving external wired equipment audio signals.
The circuit system for a disc player as described above, characterized by: the output module comprises a loudspeaker driving circuit used for amplifying audio signal power and driving a loudspeaker of the CD player and an earphone connecting circuit used for plugging an earphone, and the earphone connecting circuit is also electrically connected with the loudspeaker driving circuit.
The circuit system for a disc player as described above, characterized by: the output module also comprises an audio signal output circuit used for outputting the audio signal to external playing equipment or recording equipment.
The circuit system for a disc player as described above, characterized by: the man-machine interaction module comprises a volume adjusting circuit used for adjusting the volume of a loudspeaker of the record player, a function switching knob circuit used for manually switching the work of the function module of the record player and a key control circuit used for manually operating and controlling the working state of the record player.
The circuit system for a disc player as described above, characterized by: the record player circuit system is also provided with a port connecting extension socket for facilitating wiring, and the port connecting extension socket comprises CN140 and CN 100.
The circuit system for a disc player as described above, characterized by: the disc function module comprises a disc signal input port CON209, a signal amplifier IC301-A and a signal amplifier IC301-B, a pin (i) of the turntable signal input port CON209 is electrically connected with one end of a resistor R302 and one end of a capacitor C302, the other ends of the resistor R302 and the capacitor C302 are electrically connected with one end of a capacitor C115, the other end of the capacitor C115 is electrically connected with one end of a resistor R304 and a resistor R306, and a pin (ii) of a triode Q27, the other end of the resistor R306 is grounded, the other end of the resistor R304 is electrically connected with a pin (i) of a triode Q27, a pin (ii) of a triode Q27 is also electrically connected with one end of the capacitor C306, the other end of the capacitor C306 is electrically connected with a capacitor C117, one end of a resistor R332, and a pin (iii) of a triode Q27, the other end of the resistor R332 is grounded, and the other end of the capacitor C117 is electrically connected with a pin (iv) of the signal amplifier IC301-B after being connected with a resistor R308 in series, pin (c) of the signal amplifier IC301-B is also electrically connected with one end of the resistor R310;
a pin of the turntable signal input port CON209 is electrically connected with one end of a resistor R301 and one end of a capacitor C301, the other ends of the resistor R301 and the capacitor C301 are electrically connected with one end of a capacitor C28, the other end of a capacitor C28 is electrically connected with one end of a resistor R303, one end of a resistor R305 and a pin of a triode Q28, the other end of the resistor R305 is grounded, the other end of the resistor R303 is electrically connected with a pin (i) of a triode Q28 and the other end of the resistor R304, a pin (i) of a triode Q28 is electrically connected with a pin (i) of a triode Q27, a pin (i) of a triode Q28 is also electrically connected with one end of the capacitor C305, the other end of the capacitor C305 is electrically connected with one end of a capacitor C120, a resistor R307 and a pin (iii) of a triode Q28, the other end of the resistor R307 is grounded, the other end of the capacitor C120 is electrically connected with a pin (331) in series and then is electrically connected with a pin (iii) of the signal amplifier IC 301-A), the pin (c) of the signal amplifier IC301-A is also electrically connected with one end of a resistor R309;
the other end of the resistor R309 is electrically connected to the other end of the resistor R310, one end of the resistor R311, one end of the resistor R312, one end of the resistor R333, one end of the resistor R334, and the positive electrode of the polarity capacitor C316, the other end of the resistor R312 and the negative electrode of the polarity capacitor C316 are grounded, the other end of the resistor R334 is electrically connected to one end of the pins C301-B, the resistor R318 and one end of the resistor R316, the other end of the resistor R316 is electrically connected to one end of the capacitor C320, the other ends of the resistor R318 and the capacitor C320 are electrically connected to the pins C301-B of the signal amplifier IC301-B, the other end of the resistor R311 is electrically connected to the pins C301-B of the signal amplifier IC301-a, the other end of the resistor R333 is electrically connected to one end of the pins C333, one end of the resistor R317 and one end of the resistor R315 are electrically connected to one end of the capacitor C319, the other ends of the resistor R317 and the capacitor C319 are electrically connected with a pin (R) of the signal amplifier IC301-A, and the pin (R) of the signal amplifier IC301-A is grounded;
a pin (i) of a triode Q11 is electrically connected with the power circuit, a pin (ii) of a triode Q11 is electrically connected with one ends of a resistor R50 and a resistor R54, the other end of a resistor R50 is electrically connected with the power circuit, the other end of a resistor R54 is electrically connected with a pin (i) of a triode Q12, a pin (ii) of a triode Q12 is electrically connected with the main control circuit after being connected with a resistor R144 in series, a pin (iii) of a triode Q12 is grounded, a pin (iii) of a triode Q11 is electrically connected with one end of a resistor R319, an anode of a polar capacitor C313, an anode of a diode D1 and a pin (iv) of a turntable signal input port CON209, a cathode of the polar capacitor C313 is grounded, the other end of the resistor R319 is electrically connected with one end of a resistor R131 and an anode of the polar capacitor C317, an anode of the polar capacitor C317 is also electrically connected with a pin (iii) of the signal amplifier IC301-B, a cathode of the polar capacitor C317 is grounded, and the other end of the resistor R131 is electrically connected with an anode of the polarity capacitor C323, A pin I of a triode Q27 and a pin I of a triode Q28 are electrically connected, a negative electrode of a polar capacitor C323 is grounded, a negative electrode of a diode D1 is electrically connected with one end of a resistor R19, the other end of a resistor R19 is electrically connected with a pin I of a triode Q29, one end of a resistor R326 and one end of a resistor R327, a pin II of the triode Q29 is electrically connected with a pin III of a turntable signal input port CON209 after being connected with the resistor R33 in series, the pin III of the triode Q29 is grounded, and a pin III and a pin IV of the turntable signal input port CON209 are grounded;
the other end of the resistor R326 is electrically connected with a pin II of a triode Q26, the other end of the resistor R327 is electrically connected with a pin II of a triode Q25, a pin III of a triode Q26 and a pin III of a triode Q25 are grounded, a pin III of the signal amplifier IC301-B is electrically connected with the positive electrode of the polar capacitor C310, the negative electrode of the polar capacitor C310 is electrically connected with one end of the resistor R324 and a pin I of the triode Q26 after being connected in series with the resistor R322, the other end of the resistor R324 is grounded, a pin I of the triode Q26 is electrically connected with the capacitor C41 and the resistor R49 after being connected in series with the resistor R49, a pin I of the signal amplifier IC301-A is electrically connected with the positive electrode of the polar capacitor C309, the negative electrode of the polar capacitor C309 is electrically connected with one end of the resistor R325 and a pin I of the triode Q25 after being connected in series with the resistor R323, the other end of the resistor R325 is grounded, and a pin I of the triode Q25 is electrically connected in series with the capacitor C13, The resistor R48 is electrically connected with the audio processing control circuit.
The circuit system for a disc player as described above, characterized by: the audio processing control circuit comprises a main control chip IC1 and an auxiliary chip IC11, the main control chip IC1 is electrically connected with the auxiliary chip IC11, and the main control chip IC1 is AB5148B in model.
Compared with the prior art, the utility model has the following advantages:
1. the circuit system for the CD player is provided with the CD function module, the turntable function module, the tape function module and the radio function module, can realize multiple functions, greatly enhances the practicability of the CD player and solves the problem of single function of the CD player.
2. The circuit system for the CD player is provided with the audio processing control circuit, and can control the system to operate and switch the audio channels of the functional modules, so that the CD player can flexibly switch different functions, the interference among the different functional modules is prevented, and the audio processing control circuit can optimize audio signals, improve the tone quality and bring better music experience to people.
3. The circuit system for the CD player has the advantages of modular circuit structure, simple structure and lower cost, is provided with the port connecting extension socket, is convenient to wire and is convenient to test or detect the circuit.
4. The circuit system for the CD player is provided with the Bluetooth receiving circuit, can be wirelessly connected with external equipment and receive wireless audio signals, and is also provided with the wired equipment access circuit, can be wiredly connected with various music equipment and receive the audio signals input by the external equipment, thereby enlarging the audio source of the CD player and enhancing the practicability of the CD player.
5. The circuit system for the disc player is provided with the audio signal output circuit and can be connected with external playing equipment and recording equipment, and after the disc player converts music in a CD, a vinyl record or a magnetic tape into an audio signal, the audio signal is transmitted to the external equipment through the audio signal output circuit to be stored or played, so that the use function of the disc player is expanded, and the practicability of the disc player is enhanced.
[ description of the drawings ]
FIG. 1 is a block diagram of the circuitry;
FIG. 2 is a circuit schematic of a power supply circuit;
FIG. 3 is a circuit schematic of the audio processing control circuit;
FIG. 4 is a circuit schematic of the CD function block;
FIG. 5 is a circuit schematic of a turntable function module;
FIG. 6 is a circuit schematic of a tape function module;
FIG. 7 is a circuit schematic of a radio functional module;
FIG. 8 is a circuit schematic of a Bluetooth receiver circuit;
FIG. 9 is a circuit schematic of a wired device access circuit;
FIG. 10 is a circuit schematic of the horn driver circuit;
FIG. 11 is a circuit schematic of the headset connection circuit;
fig. 12 is a circuit schematic diagram of an audio signal output circuit;
FIG. 13 is a circuit schematic of a display module;
FIG. 14 is a circuit schematic of a human-computer interaction module;
FIG. 15 is a circuit schematic of a port connection patch panel;
in the figure: 1 is a power supply circuit; 2 is an audio processing control circuit; 3, port connection extension socket; 4 is a CD function module; 5 is a disc function module; 6 is a tape function module; 7 is a radio function module; 8 is a Bluetooth receiving circuit; 9 is a wired device access circuit; 10 is a horn driving circuit; 11 is an earphone connecting circuit; 12 is an audio signal output circuit; 13 is a display module; 14 is a volume adjusting circuit; 15 is a function switching knob circuit; and 16 is a key control circuit.
[ detailed description ] embodiments
The technical features of the present invention will be described in further detail with reference to the accompanying drawings so that those skilled in the art can understand the technical features.
A circuit system for a CD player is disclosed, as shown in fig. 1-15, and comprises a power circuit 1 for supplying power to the system, and an audio processing control circuit 2 for processing audio signals, switching audio signal channels, and controlling the system to operate, wherein the audio processing control circuit 2 is electrically connected with a plurality of functional modules for inputting audio signals, and an output module for outputting playing audio signals, and the audio processing control circuit 2 is also electrically connected with a human-computer interaction module for manually operating and adjusting the function of the CD player, and a display module 13 for displaying the working state of the CD player.
Specifically, as shown in fig. 4 to 7, the plurality of function modules are a CD function module 4, a turntable function module 5, a tape function module 6, and a radio function module 7, respectively.
In addition, as shown in fig. 8 to fig. 9, the audio processing control circuit 2 is further electrically connected to a bluetooth receiving circuit 8 for wirelessly connecting an external device and receiving a wireless audio signal, and a wired device access circuit 9 for externally connecting a wired device and inputting an audio signal, so that the audio signal input by an external music device can be received and played, the audio source of the disc player is expanded, and the practicability of the disc player is enhanced.
Specifically, as shown in fig. 10 to 11, the output module includes a speaker driving circuit 10 for amplifying audio signal power and driving a speaker of a audio disc player, and an earphone connecting circuit 11 for plugging an earphone, the earphone connecting circuit 11 is further electrically connected to the speaker driving circuit 10, and the speaker driving circuit 10 can be controlled through the earphone, and when the earphone is inserted, the switch signal can be sent to the speaker driving circuit 10 through a key switch on the earphone, so that the speaker of the audio disc player is controlled to operate or suspend, and the operation of a user is facilitated.
In addition, as shown in fig. 12, the output module further includes an audio signal output circuit 12 for outputting an audio signal to an external playing device or a recording device, and can be connected to the external playing device and the recording device, and after the audio player converts music in a CD, a vinyl record, or a tape into an audio signal, the audio signal is transmitted to the external device through the audio signal output circuit 12 for storage or playing, so that the use function of the record player is expanded, and the practicability of the record player is enhanced.
Specifically, as shown in fig. 14, the man-machine interaction module includes a volume adjusting circuit 14 for adjusting the volume of the loudspeaker of the disc player, a function switching knob circuit 15 for manually switching the operation of the functional module of the disc player, and a key control circuit 16 for manually controlling the operating state of the disc player.
Specifically, as shown in fig. 15, the record player circuit system is further provided with a port connection extension socket 3 for facilitating wiring, where the port connection extension socket 3 includes CN140 and CN100, so as to facilitate wiring and testing or detecting the circuit.
Specifically, as shown in fig. 5, the turntable function module 5 includes a turntable signal input port CON209, a signal amplifier IC301-a and a signal amplifier IC301-B, a pin (R) of the turntable signal input port CON209 is electrically connected to one end of a resistor R302 and one end of a capacitor C302, the other ends of the resistor R302 and the capacitor C302 are electrically connected to one end of a capacitor C115, the other end of the capacitor C115 is electrically connected to one end of a resistor R304, one end of the resistor R306 and a pin (R) of a transistor Q27, the other end of the resistor R306 is grounded, the other end of the resistor R304 is electrically connected to a pin (R) of a transistor Q27, a pin (R) of a transistor Q27 is also electrically connected to one end of the capacitor C306, the other end of the capacitor C306 is electrically connected to one end of the capacitor C117, the resistor R332 and a pin (Q27), the other end of the resistor R332 is grounded, the other end of the capacitor C117 is electrically connected to a pin (R) in series with a resistor R308 and then electrically connected to a pin (C301-B) of the signal amplifier IC301-B, pin (c) of the signal amplifier IC301-B is also electrically connected with one end of the resistor R310;
a pin of the turntable signal input port CON209 is electrically connected with one end of a resistor R301 and one end of a capacitor C301, the other ends of the resistor R301 and the capacitor C301 are electrically connected with one end of a capacitor C28, the other end of a capacitor C28 is electrically connected with one end of a resistor R303, one end of a resistor R305 and a pin of a triode Q28, the other end of the resistor R305 is grounded, the other end of the resistor R303 is electrically connected with a pin (i) of a triode Q28 and the other end of the resistor R304, a pin (i) of a triode Q28 is electrically connected with a pin (i) of a triode Q27, a pin (i) of a triode Q28 is also electrically connected with one end of the capacitor C305, the other end of the capacitor C305 is electrically connected with one end of a capacitor C120, a resistor R307 and a pin (iii) of a triode Q28, the other end of the resistor R307 is grounded, the other end of the capacitor C120 is electrically connected with a pin (331) in series and then is electrically connected with a pin (iii) of the signal amplifier IC 301-A), the pin (c) of the signal amplifier IC301-A is also electrically connected with one end of a resistor R309;
the other end of the resistor R309 is electrically connected to the other end of the resistor R310, one end of the resistor R311, one end of the resistor R312, one end of the resistor R333, one end of the resistor R334, and the positive electrode of the polarity capacitor C316, the other end of the resistor R312 and the negative electrode of the polarity capacitor C316 are grounded, the other end of the resistor R334 is electrically connected to one end of the pins C301-B, the resistor R318 and one end of the resistor R316, the other end of the resistor R316 is electrically connected to one end of the capacitor C320, the other ends of the resistor R318 and the capacitor C320 are electrically connected to the pins C301-B of the signal amplifier IC301-B, the other end of the resistor R311 is electrically connected to the pins C301-B of the signal amplifier IC301-a, the other end of the resistor R333 is electrically connected to one end of the pins C333, one end of the resistor R317 and one end of the resistor R315 are electrically connected to one end of the capacitor C319, the other ends of the resistor R317 and the capacitor C319 are electrically connected with a pin (R) of the signal amplifier IC301-A, and the pin (R) of the signal amplifier IC301-A is grounded;
a pin of a triode Q11 is electrically connected with the power supply circuit 1, a pin of a triode Q11 is electrically connected with one ends of a resistor R50 and a resistor R54, the other end of a resistor R50 is electrically connected with the power supply circuit 1, the other end of a resistor R54 is electrically connected with a pin of a triode Q12, a pin of a triode Q12 is electrically connected with the main control circuit 2 after being connected with a resistor R144 in series, a pin of a triode Q12 is grounded, a pin of a triode Q11 is electrically connected with one end of a resistor R319, an anode of a polar capacitor C313, an anode of a diode D1 and a pin (C) of a turntable signal input port CON209, a cathode of the polar capacitor C313 is grounded, the other end of the resistor R319 is electrically connected with one end of a resistor R131 and an anode of a polar capacitor C317, an anode of the polar capacitor C317 is also electrically connected with a pin of the signal amplifier IC301-B, a cathode of the polar capacitor C317 is grounded, and the other end of the resistor R131 is electrically connected with an anode of the signal amplifier IC 323 of the signal amplifier IC301-B, A pin I of a triode Q27 and a pin I of a triode Q28 are electrically connected, a negative electrode of a polar capacitor C323 is grounded, a negative electrode of a diode D1 is electrically connected with one end of a resistor R19, the other end of a resistor R19 is electrically connected with a pin I of a triode Q29, one end of a resistor R326 and one end of a resistor R327, a pin II of the triode Q29 is electrically connected with a pin III of a turntable signal input port CON209 after being connected with the resistor R33 in series, the pin III of the triode Q29 is grounded, and a pin III and a pin IV of the turntable signal input port CON209 are grounded;
the other end of the resistor R326 is electrically connected with a pin II of a triode Q26, the other end of the resistor R327 is electrically connected with a pin II of a triode Q25, a pin III of a triode Q26 and a pin III of a triode Q25 are grounded, a pin III of the signal amplifier IC301-B is electrically connected with the positive electrode of the polar capacitor C310, the negative electrode of the polar capacitor C310 is electrically connected with one end of the resistor R324 and a pin I of the triode Q26 after being connected in series with the resistor R322, the other end of the resistor R324 is grounded, a pin I of the triode Q26 is electrically connected with the capacitor C41 and the resistor R49 after being connected in series with the resistor R49, the pin I of the signal amplifier IC301-A is electrically connected with the positive electrode of the polar capacitor C309, the negative electrode of the polar capacitor C309 is electrically connected with one end of the resistor R325 and a pin I of the triode Q25 after being connected in series with the resistor R323, the other end of the resistor R325 is grounded, and a pin I of the triode Q25 is electrically connected with a pin C13, The resistor R48 is electrically connected with the audio processing control circuit 2.
Specifically, as shown in fig. 3, the audio processing control circuit 2 includes a main control chip IC1 and an auxiliary chip IC11, the main control chip IC1 is electrically connected to the auxiliary chip IC11, the model of the main control chip IC1 is AB5148B, the main control chip IC1 integrates a control function, a bluetooth receiving function, an audio channel switching function, and an audio signal processing function, and the main control chip IC1 has a strong performance, and can simplify a circuit system of a disc player, so that the circuit structure of the disc player is modularized and the architecture of the disc player is simpler, and the cost is reduced; and the main control chip IC1 with the model AB5148B has better audio signal processing function compared with the similar chips, can perform further optimization processing on audio signals, improves tone quality and brings better music experience to people.
In addition, in the power-on state, if the audio processing control circuit 2 does not have any audio signal while the disc player is not operated for a period of time, the main control chip IC1 controls the disc player to enter the standby state according to the internally set program, thereby reducing the power consumption.
The embodiment of the present invention is described only for the preferred embodiment of the present invention, and not for the limitation of the concept and scope of the present invention, and the technical solution of the present invention is subject to various modifications and improvements by those skilled in the art without departing from the design concept of the present invention.
Claims (9)
1. A circuit system for a disc player, comprising: including being used for power supply circuit (1) for the system power supply to and be used for handling audio signal, switch audio signal passageway and audio frequency processing control circuit (2) of control system operation, audio frequency processing control circuit (2) electricity is connected with a plurality of functional modules that are used for inputing audio signal and is used for exporting the output module who plays audio signal, audio frequency processing control circuit (2) still electricity is connected with the man-machine interaction module who is used for manual operation to adjust the record machine function and is used for showing display module (13) of record machine operating condition.
2. The circuitry for a disc player as claimed in claim 1, wherein: the plurality of functional modules are respectively a CD functional module (4), a turntable functional module (5), a tape functional module (6) and a radio functional module (7).
3. The circuitry for a disc player according to claim 1 or 2, wherein: the audio processing control circuit (2) is also electrically connected with a Bluetooth receiving circuit (8) for wirelessly connecting external equipment and receiving wireless audio signals, and a wired equipment access circuit (9) for externally connecting wired equipment and receiving external wired equipment audio signals.
4. The circuitry for a disc player as claimed in claim 3, wherein: the output module comprises a loudspeaker driving circuit (10) for amplifying audio signal power and driving a loudspeaker of a CD player and an earphone connecting circuit (11) for plugging an earphone, wherein the earphone connecting circuit (11) is also electrically connected with the loudspeaker driving circuit (10).
5. The circuitry for a disc player of claim 4, wherein: the output module also comprises an audio signal output circuit (12) for outputting the audio signal to an external playing device or a recording device.
6. The circuitry for a disc player as claimed in claim 4, wherein: the man-machine interaction module comprises a volume adjusting circuit (14) for adjusting the volume of a loudspeaker of the record player, a function switching knob circuit (15) for manually switching the work of the function module of the record player, and a key control circuit (16) for manually operating and controlling the working state of the record player.
7. The circuitry for a disc player as claimed in claim 1, wherein: the record player circuit system is also provided with a port connecting extension socket (3) for facilitating wiring, and the port connecting extension socket (3) comprises CN140 and CN 100.
8. The circuitry for a disc player as set forth in claim 2, wherein: the turntable signal input port CON209, the signal amplifier IC301-A and the signal amplifier IC301-B are included in the turntable function module (5), the pin of the turntable signal input port CON209 is electrically connected with one end of a resistor R302 and a capacitor C302, the other end of the resistor R302 and the capacitor C302 is electrically connected with one end of a capacitor C115, the other end of the capacitor C115 is electrically connected with one end of a resistor R304, one end of a resistor R306 and a pin of a triode Q27, the other end of the resistor R306 is grounded, the other end of the resistor R304 is electrically connected with the pin of a triode Q27, the pin of a triode Q27 is also electrically connected with one end of the capacitor C306, the other end of the capacitor C306 is electrically connected with one end of the capacitor C117, the resistor R332 and the pin of the triode Q27, the other end of the resistor R332 is grounded, the other end of the capacitor C117 is electrically connected with the pin of the signal amplifier IC301-B after being connected with the resistor R308 in series, pin (c) of the signal amplifier IC301-B is also electrically connected with one end of the resistor R310;
a pin of the turntable signal input port CON209 is electrically connected with one end of a resistor R301 and one end of a capacitor C301, the other ends of the resistor R301 and the capacitor C301 are electrically connected with one end of a capacitor C28, the other end of a capacitor C28 is electrically connected with one end of a resistor R303, one end of a resistor R305 and a pin of a triode Q28, the other end of the resistor R305 is grounded, the other end of the resistor R303 is electrically connected with a pin (i) of a triode Q28 and the other end of the resistor R304, a pin (i) of a triode Q28 is electrically connected with a pin (i) of a triode Q27, a pin (i) of a triode Q28 is also electrically connected with one end of the capacitor C305, the other end of the capacitor C305 is electrically connected with one end of a capacitor C120, a resistor R307 and a pin (iii) of a triode Q28, the other end of the resistor R307 is grounded, the other end of the capacitor C120 is electrically connected with a pin (331) in series and then is electrically connected with a pin (iii) of the signal amplifier IC 301-A), the pin (c) of the signal amplifier IC301-A is also electrically connected with one end of a resistor R309;
the other end of the resistor R309 is electrically connected to the other end of the resistor R310, one end of the resistor R311, one end of the resistor R312, one end of the resistor R333, one end of the resistor R334, and the positive electrode of the polarity capacitor C316, the other end of the resistor R312 and the negative electrode of the polarity capacitor C316 are grounded, the other end of the resistor R334 is electrically connected to one end of the pins C301-B, the resistor R318 and one end of the resistor R316, the other end of the resistor R316 is electrically connected to one end of the capacitor C320, the other ends of the resistor R318 and the capacitor C320 are electrically connected to the pins C301-B of the signal amplifier IC301-B, the other end of the resistor R311 is electrically connected to the pins C301-B of the signal amplifier IC301-a, the other end of the resistor R333 is electrically connected to one end of the pins C333, one end of the resistor R317 and one end of the resistor R315 are electrically connected to one end of the capacitor C319, the other ends of the resistor R317 and the capacitor C319 are electrically connected with a pin (R) of the signal amplifier IC301-A, and the pin (R) of the signal amplifier IC301-A is grounded;
a pin phi of the triode Q11 is electrically connected with the power supply circuit (1), a pin phi of the triode Q11 is electrically connected with one ends of a resistor R50 and a resistor R54, the other end of the resistor R50 is electrically connected with the power supply circuit (1), the other end of the resistor R54 is electrically connected with a pin phi of the triode Q12, a pin phi of the triode Q12 is electrically connected with the audio processing control circuit (2) after being connected with a resistor R144 in series, a pin phi of the triode Q12 is grounded, a pin phi of the triode Q11 is electrically connected with one end of a resistor R319, an anode of a polar capacitor C313, an anode of a diode D1 and a pin phi of the turntable signal input port CON209, a cathode of the polar capacitor C313 is grounded, the other end of the resistor R319 is electrically connected with one end of a resistor R131 and an anode of a polar capacitor C317, and an anode of the polar capacitor C317 is also electrically connected with a pin phi of the signal amplifier IC301-B and a cathode of the polar capacitor C317 is grounded, the other end of the resistor R131 is electrically connected with the anode of the polar capacitor C323, a pin I of a triode Q27 and a pin I of a triode Q28, the cathode of the polar capacitor C323 is grounded, the cathode of the diode D1 is electrically connected with one end of a resistor R19, the other end of the resistor R19 is electrically connected with a pin I of a triode Q29, one end of a resistor R326 and one end of a resistor R327, a pin II of the triode Q29 is electrically connected with a pin II of the turntable signal input port CON209 after being connected with the resistor R33 in series, a pin III of the triode Q29 is grounded, and a pin III of the turntable signal input port CON209 are grounded;
the other end of the resistor R326 is electrically connected with a pin II of a triode Q26, the other end of the resistor R327 is electrically connected with a pin II of a triode Q25, a pin III of a triode Q26 and a pin III of a triode Q25 are grounded, a pin III of the signal amplifier IC301-B is electrically connected with a positive electrode of a polar capacitor C310, a negative electrode of the polar capacitor C310 is electrically connected with one end of a resistor R324 and a pin III of a triode Q26 after being connected in series, the other end of the resistor R324 is grounded, a pin III of the triode Q26 is electrically connected with a capacitor C41 and a resistor R49 after being connected in series, the audio processing control circuit (2), a pin I of the signal amplifier IC301-A is electrically connected with a positive electrode of the polar capacitor C309, a negative electrode of the polar capacitor C309 is electrically connected with a resistor R323 after being connected in series with one end of a resistor R325 and a pin III of the triode Q25, the other end of the resistor R325 is grounded, a pin III of the triode Q25 is electrically connected with a pin III of a capacitor C13, The resistor R48 is electrically connected with the audio processing control circuit (2).
9. The circuitry for a disc player as claimed in claim 1, wherein: the audio processing control circuit (2) comprises a main control chip IC1 and an auxiliary chip IC11, the main control chip IC1 is electrically connected with the auxiliary chip IC11, and the model of the main control chip IC1 is AB 5148B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258421.9U CN216980117U (en) | 2021-12-21 | 2021-12-21 | Circuit system for CD player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123258421.9U CN216980117U (en) | 2021-12-21 | 2021-12-21 | Circuit system for CD player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216980117U true CN216980117U (en) | 2022-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123258421.9U Active CN216980117U (en) | 2021-12-21 | 2021-12-21 | Circuit system for CD player |
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| Country | Link |
|---|---|
| CN (1) | CN216980117U (en) |
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2021
- 2021-12-21 CN CN202123258421.9U patent/CN216980117U/en active Active
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