CN106303825A - A kind of signal high-fidelity wireless audio reception system - Google Patents
A kind of signal high-fidelity wireless audio reception system Download PDFInfo
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- CN106303825A CN106303825A CN201610688333.7A CN201610688333A CN106303825A CN 106303825 A CN106303825 A CN 106303825A CN 201610688333 A CN201610688333 A CN 201610688333A CN 106303825 A CN106303825 A CN 106303825A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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Abstract
The invention discloses a kind of signal high-fidelity wireless audio reception system, it is characterized in that: mainly by processing chip U, the electric capacity C12 of ground connection while positive pole is connected with the IN pin processing chip U after resistance R12, negative pole is connected with the GND pin of process chip U, positive pole is connected with the OUT pin processing chip U, negative pole forms as the electric capacity C13 etc. of outfan.The interference signal being entrained in during being wirelessly transferred in audio signal can be filtered by the present invention at receiving terminal and outfan, it uses the mode of double filtration that interference signal is carried out filtration filter effect can be made more thorough, so that the audio signal of output is cleaner, improve the play quality of sound, the auditory effect making people is more preferable.
Description
Technical field
The present invention relates to field of wireless transmission, specifically refer to a kind of signal high-fidelity wireless audio reception system.
Background technology
Wireless audio signal transmission system is made up of wireless transmitting system and wireless receiving system, passes for remote-wireless
Defeated audio signal, has been widely used in, in the middle of the life of people, bringing great convenience to the life of people.Along with people
Improving constantly of living standard, people are more and more higher to the requirement of sound quality.But, wireless audio signal transmission system exists
During audio signal is wirelessly transferred, it will usually have interference signal to be doped in the middle of audio signal, due to by dry
Disturbing the impact of signal, can there is the biggest noise in the sound in receiving terminal output, have a strong impact on the auditory effect of people.Therefore,
Improving a kind of novel wireless receiving system to solve the problems referred to above is then the current task of top priority.
Summary of the invention
It is an object of the invention to solve current audio signal during being wirelessly transferred, be interfered effect of signals and lead
Cause sound and play the defect that there is very loud noise, it is provided that a kind of signal high-fidelity wireless audio reception system.
The purpose of the present invention is by following technical proposals reality: a kind of signal high-fidelity wireless audio reception system, mainly
By processing chip U, positive pole is connected with-IN the pin processing chip U after resistance R12, the GND of negative pole and process chip U pipe
Foot be connected while the electric capacity C12 of ground connection, positive pole is connected with the OUT pin processing chip U, negative pole is as the electricity of outfan
Holding C13, the resistance R13 being in parallel with electric capacity C13, the biasing circuit being connected with the GAIN2 pin processing chip U, with biasing
The oscillating circuit that circuit is connected, the audio signal compression circuit being connected with oscillating circuit, with audio signal compression circuit phase
The front end receiver circuit connected, P pole and the diode that VS pin is connected, N pole is connected with oscillating circuit processing chip U
D7, negative pole and the electric capacity C11 that+IN pin is connected, positive pole is connected with the N pole of diode D7 processing chip U, be serially connected in place
Resistance R11 between GAIN1 pin and the N pole of diode D7 of reason chip U, and positive pole is connected with the N pole of diode D7,
The electric capacity C10 composition that negative pole is connected with the GAIN2 pin processing chip U；The N pole of described diode D7 also with audio signal pressure
Contracting circuit is connected.
Further, described biased electrical routing amplifier P, audion VT7, audion VT8, field effect transistor MOS, negative pole with
The grid of field effect transistor MOS is connected, positive pole is as the polar capacitor C14 of the input of this biasing circuit, positive pole and field effect
The source electrode of pipe MOS is connected, the polar capacitor C16 of minus earth, and the resistance R15 being in parallel with polar capacitor C16 concatenates on the scene
Resistance R14 between grid and the negative pole of polar capacitor C16 of effect pipe MOS, positive pole after resistance R16 with field effect transistor MOS
Drain electrode be connected, the electric capacity C15 of minus earth, positive pole is connected with the positive pole of electric capacity C15, the base of negative pole and audion VT8
Electric capacity C17, the P pole that pole is connected is connected with the negative pole of polar capacitor C16, N pole after resistance R17 with the base of audion VT7
The diode D10 that pole is connected, the resistance R18 being serially connected between the emitter stage of audion VT7 and the positive pole of electric capacity C15, concatenation
Resistance R19 between the emitter stage and the negative pole of polar capacitor C16 of audion VT8, negative pole is connected with the positive pole of amplifier P
Connect, electric capacity C18 that positive pole is connected with the outfan of amplifier P, be serially connected in the outfan of amplifier P and sending out of audion VT8
Resistance R20, P pole between emitter-base bandgap grading is connected with the outfan of amplifier P, N pole is as two poles of the outfan of this biasing circuit
Pipe D11, and the resistance R21 composition being serially connected between the N pole of diode D11 and the emitter stage of audion VT8；Described field effect
The drain electrode of pipe MOS is connected with the colelctor electrode of audion VT7；The positive pole of described electric capacity C15 connects power supply；Described electric capacity C17's is negative
Pole is connected with the N pole of diode D10；The positive pole of described amplifier P is connected with the positive pole of electric capacity C15, its negative pole is then with three
The colelctor electrode of pole pipe VT8 is connected；The input of described biasing circuit is connected with oscillating circuit, its outfan then with process core
The GAIN2 pin of sheet U is connected.
Described oscillating circuit, by audion VT5, audion VT6, is serially connected in colelctor electrode and the audion VT6 of audion VT5
Colelctor electrode between inductance L2, N pole be connected with the emitter stage of audion VT6, P pole is connected with the input of biasing circuit
Diode D9, the electric capacity C9 that positive pole is connected with the emitter stage of audion VT5, negative pole is connected with the base stage of audion VT6,
N pole is connected with the emitter stage of audion VT5, the diode D8 of P pole ground connection, is serially connected in P pole and the audion VT5 of diode D8
Base stage between agitator X, positive pole is connected with the base stage of audion VT5, negative pole is connected with the emitter stage of audion VT5
Electric capacity C8, and be serially connected between base stage and the colelctor electrode of audion VT5 resistance R9 composition；The P pole of described diode D8
It is connected with the N pole of diode D7；The colelctor electrode of described audion VT5 is connected with audio signal compression circuit.
Described audio signal compression circuit is by audion VT3, and audion VT4, N pole is connected with front end receiver circuit, P pole
Diode D3, the P pole being connected with the colelctor electrode of audion VT3 is connected with the N pole of diode D3, N pole and audion VT4
The diode that diode D2, P pole ground connection that base stage is connected, N pole emitter stage with audion VT3 after resistance R4 is connected
D4, negative pole is connected with the base stage of audion VT3, positive pole sequentially after resistance R5 and resistance R6 with the colelctor electrode of audion VT4
The electric capacity C6 being connected, the electric capacity C5 that negative pole is connected with the N pole of diode D4, positive pole is connected with the base stage of audion VT4,
Resistance R8, the P pole being serially connected between the base stage of audion VT4 and the P pole of diode D4 after resistance R7 with audion VT4 send out
Diode D6, the P pole that emitter-base bandgap grading is connected, N pole is connected with the N pole of diode D4 is connected with the N pole of diode D4, N pole with
The diode D5 that the P pole of diode D4 is connected, and positive pole is connected with the N pole of diode D4, negative pole after resistance R10 with
The electric capacity C7 composition that the P pole of diode D4 is connected；The negative pole of described electric capacity C7 is connected with the N pole of diode D7；Described two
The N pole of pole pipe D4 is connected with front end receiver circuit；The base stage of described audion VT3 is connected with its colelctor electrode；Described resistance
The junction point of R5 and resistance R6 connects power supply while being connected with the colelctor electrode of audion VT5.
Described front end receiver circuit by audion VT2, audion VT1, antenna E, the colelctor electrode phase of negative pole and audion VT1
Connect, electric capacity C1, the P pole that is connected with antenna E after inductance L1 of positive pole is connected with the positive pole of electric capacity C1, N pole and diode
The diode D1 that the N pole of D3 is connected, the electric capacity C4 that minus earth, positive pole are connected with the N pole of diode D1 after electric capacity C3,
The electric capacity C2 that positive pole is connected with the N pole of diode D1, negative pole negative pole with electric capacity C4 after resistance R2 is connected, is serially connected in three
Resistance R1 between emitter stage and the negative pole of electric capacity C4 of pole pipe VT1, and it is serially connected in emitter stage and the electric capacity C4 of audion VT2
Negative pole between resistance R3 composition；The colelctor electrode of described audion VT2 is connected with the base stage of audion VT1, its base stage then
It is connected with the N pole of diode D4.
Described process chip U is the integrated chip of LM386.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) present invention can believe at receiving terminal and outfan in the interference to being entrained in during being wirelessly transferred in audio signal
Number filtering, it uses the mode of double filtration that interference signal carries out filtration filter effect can be made more thorough, thus
The audio signal making output is more clean, improves the play quality of sound, and the auditory effect making people is more preferable.
(2) can to amplify audio signal weak with make up that audio signal produces during being wirelessly transferred for the present invention, from
And make sound play and become apparent from.
(3) present invention has stable quiescent point, such that it is able to guarantee that audio signal does not haves mistake after amplification
True phenomenon, improves the definition that sound is play.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structure chart of the biasing circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As it is shown in figure 1, the present invention mainly by process chip U, positive pole after resistance R12 with process chip U-IN pin phase
Connect, negative pole be connected with the GND pin of process chip U while the electric capacity C12 of ground connection, positive pole and the OUT processing chip U manage
Foot is connected, negative pole as electric capacity C13, the resistance R13 being in parallel with electric capacity C13 of outfan, with the GAIN2 processing chip U
The biasing circuit that pin is connected, the oscillating circuit being connected with biasing circuit, the audio signal pressure being connected with oscillating circuit
Contracting circuit, the front end receiver circuit being connected with audio signal compression circuit, P pole is connected with the VS pin processing chip U, N
The diode D7 that pole is connected with oscillating circuit, negative pole is connected with+IN the pin processing chip U, the N of positive pole and diode D7
The electric capacity C11 that pole is connected, is serially connected in the resistance R11 between the GAIN1 pin and the N pole of diode D7 that process chip U, and
The electric capacity C10 composition that positive pole is connected with the N pole of diode D7, negative pole is connected with the GAIN2 pin of process chip U；Described
The N pole of diode D7 is also connected with audio signal compression circuit.The outfan of the present invention then connects the loudspeaker of outer end, receives
Audio signal exports after treatment to loudspeaker, loudspeaker play out.In order to preferably implement the present invention, this process chip U
The integrated chip of preferably LM386 realizes.The integrated chip of this LM386 can carry out power amplification to the audio signal of input, thus
The sound making broadcasting becomes apparent from.Interference signal in audio signal is then filtered by this electric capacity C12 and electric capacity C11, improves
The quality of audio signal.
This oscillating circuit is by audion VT5, audion VT6, resistance R9, inductance L2, diode D8, diode D9, electric capacity
C8, electric capacity C9 and agitator X form.
Wherein, this inductance L2 is serially connected between the colelctor electrode of audion VT5 and the colelctor electrode of audion VT6.Diode D9
N pole be connected with the emitter stage of audion VT6, P pole is connected with the input of biasing circuit.The positive pole of electric capacity C9 and three poles
The emitter stage of pipe VT5 is connected, and negative pole is connected with the base stage of audion VT6.The N pole of diode D8 is sent out with audion VT5's
Emitter-base bandgap grading is connected, P pole ground connection.Agitator X is serially connected between the P pole of diode D8 and the base stage of audion VT5.Electric capacity C8 is just
Pole is connected with the base stage of audion VT5, and negative pole is connected with the emitter stage of audion VT5.Resistance R9 is serially connected in audion VT5
Base stage and colelctor electrode between.The P pole of described diode D8 is connected with the N pole of diode D7.The current collection of described audion VT5
Pole is connected with audio signal compression circuit.
This audio signal compression circuit by audion VT3, audion VT4, resistance R4, resistance R5, resistance R6, resistance R7,
Resistance R8, diode D2, diode D3, diode D4, diode D5, diode D6, electric capacity C5, electric capacity C6 and electric capacity C7 group
Become.
The N pole of this diode D3 is connected with front end receiver circuit, and P pole is connected with the colelctor electrode of audion VT3.Two poles
The P pole of pipe D2 is connected with the N pole of diode D3, and N pole is connected with the base stage of audion VT4.The P pole ground connection of diode D4, N
Pole emitter stage with audion VT3 after resistance R4 is connected.The negative pole of electric capacity C6 is connected with the base stage of audion VT3, just
Pole is sequentially connected through resistance R5 colelctor electrode with audion VT4 after resistance R6.The negative pole of electric capacity C5 and the N pole of diode D4
Being connected, positive pole is connected with the base stage of audion VT4.Resistance R8 is serially connected in the base stage of audion VT4 and the P pole of diode D4
Between.
The P pole of diode D6 emitter stage with audion VT4 after resistance R7 is connected, the N pole phase of N pole and diode D4
Connect.The P pole of diode D5 is connected with the N pole of diode D4, and N pole is connected with the P pole of diode D4.The positive pole of electric capacity C7
Being connected with the N pole of diode D4, negative pole P pole with diode D4 after resistance R10 is connected.The negative pole of described electric capacity C7 with
The N pole of diode D7 is connected.The N pole of described diode D4 is connected with front end receiver circuit.The base stage of described audion VT3
It is connected with its colelctor electrode.The junction point of described resistance R5 and resistance R6 connects while being connected with the colelctor electrode of audion VT5
Power supply.Audio signal can be compressed by this audio signal compression circuit, thus improves the present invention to Audio Signal Processing
Efficiency.
Additionally this front end receiver circuit is by audion VT2, audion VT1, antenna E, resistance R1, resistance R2, resistance R3, electricity
Sense L1, electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4 and diode D1 composition.
During connection, the negative pole of electric capacity C1 is connected with the colelctor electrode of audion VT1, positive pole after inductance L1 with antenna E phase
Connect.The P pole of diode D1 is connected with the positive pole of electric capacity C1, and N pole is connected with the N pole of diode D3.The negative pole of electric capacity C4
Ground connection, positive pole N pole with diode D1 after electric capacity C3 is connected.The positive pole of electric capacity C2 is connected with the N pole of diode D1, negative
Pole negative pole with electric capacity C4 after resistance R2 is connected.Resistance R1 is serially connected in emitter stage and the negative pole of electric capacity C4 of audion VT1
Between.Resistance R3 is serially connected between the emitter stage of audion VT2 and the negative pole of electric capacity C4.The colelctor electrode of described audion VT2 with
The base stage of audion VT1 is connected, and its base stage is then connected with the N pole of diode D4.Wherein, this electric capacity C2, electric capacity C3, electric capacity
C4 and resistance R2 forms a wave filter, and the interference signal in this wave filter audio signal to receiving is defeated after filtering
Give late-class circuit.
As in figure 2 it is shown, this biased electrical routing amplifier P, audion VT7, audion VT8, field effect transistor MOS, resistance
R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, polar capacitor C14, electric capacity
C15, polar capacitor C16, electric capacity C17, electric capacity C18, diode D10, diode D11,
During connection, the negative pole of electric capacity C14 is connected with the grid of field effect transistor MOS, defeated as this biasing circuit of positive pole
Entering end and be connected with the P pole of diode D9, the positive pole of polar capacitor C16 is connected with the source electrode of field effect transistor MOS, and negative pole connects
Ground.Resistance R15 is in parallel with polar capacitor C16.Resistance R14 is serially connected in the grid of field effect transistor MOS and the negative of polar capacitor C16
Between pole.The drain electrode with field effect transistor MOS after resistance R16 of electric capacity C15 positive pole is connected, minus earth.Electric capacity C17 positive pole with
The positive pole of electric capacity C15 is connected, and negative pole is connected with the base stage of audion VT8.The P pole of diode D10 is with polar capacitor C16's
Negative pole is connected, and N pole base stage with audion VT7 after resistance R17 is connected.Resistance R18 is serially connected in the transmitting of audion VT7
Between the positive pole of pole and electric capacity C15.Resistance R19 is serially connected between the emitter stage of audion VT8 and the negative pole of polar capacitor C16.
The negative pole of electric capacity C18 is connected with the positive pole of amplifier P, and positive pole is connected with the outfan of amplifier P.Resistance R20 is serially connected in
Between outfan and the emitter stage of audion VT8 of amplifier P.The P pole of diode D11 is connected with the outfan of amplifier P,
N pole as the outfan of this biasing circuit and is connected with the GAIN2 pin processing chip U.Resistance R21 is serially connected in diode
Between N pole and the emitter stage of audion VT8 of D11.
The drain electrode of described field effect transistor MOS is connected with the colelctor electrode of audion VT7.The positive pole of described electric capacity C15 connects electricity
Source.The negative pole of described electric capacity C17 is connected with the N pole of diode D10.The positive pole of described amplifier P and the positive pole phase of electric capacity C15
Connecting, its negative pole then colelctor electrode with audion VT8 is connected.This biasing circuit has stable quiescent point, thus can
To guarantee that audio signal does not haves the phenomenon of distortion after amplifying, improve the quality of sound.
The present invention is by filtering the interference signal in audio signal at receiving terminal and outfan, and combines new
The audio signal compression circuit of grain husk and oscillating circuit, can improve filter effect greatly, and the audio signal making output is more dry
Only, sound play quality is improved.
As it has been described above, just can well realize the present invention.
Claims (6)
1. a signal high-fidelity wireless audio reception system, it is characterised in that: mainly by processing chip U, positive pole is through resistance R12
Be connected with-IN the pin processing chip U afterwards, negative pole be connected with the GND pin of process chip U while the electric capacity of ground connection
C12, positive pole is connected with the OUT pin processing chip U, negative pole as the electric capacity C13 of outfan, be in parallel with electric capacity C13
Resistance R13, the biasing circuit being connected with the GAIN2 pin processing chip U, the oscillating circuit being connected with biasing circuit, with
The audio signal compression circuit that oscillating circuit is connected, the front end receiver circuit being connected with audio signal compression circuit, P pole with
Process the diode D7 that VS pin is connected, N pole is connected of chip U, negative pole and the+IN pipe processing chip U with oscillating circuit
The electric capacity C11 that foot is connected, positive pole is connected with the N pole of diode D7, is serially connected in GAIN1 pin and two poles processing chip U
Resistance R11 between the N pole of pipe D7, and positive pole is connected with the N pole of diode D7, the GAIN2 of negative pole and process chip U pipe
The electric capacity C10 composition that foot is connected；The N pole of described diode D7 is also connected with audio signal compression circuit.
A kind of signal high-fidelity wireless audio reception system the most according to claim 1, it is characterised in that: described biased electrical
Routing amplifier P, audion VT7, audion VT8, field effect transistor MOS, negative pole is connected with the grid of field effect transistor MOS, just
Pole is as the polar capacitor C14 of the input of this biasing circuit, and positive pole is connected with the source electrode of field effect transistor MOS, minus earth
Polar capacitor C16, the resistance R15 being in parallel with polar capacitor C16, be serially connected in grid and the polar capacitor of field effect transistor MOS
Resistance R14 between the negative pole of C16, positive pole drain electrode with field effect transistor MOS after resistance R16 is connected, the electricity of minus earth
Hold C15, positive pole is connected, negative pole is connected with the base stage of audion VT8 electric capacity C17, P pole and pole with the positive pole of electric capacity C15
The diode D10 that the negative pole of property electric capacity C16 is connected, N pole base stage with audion VT7 after resistance R17 is connected, is serially connected in
Resistance R18 between emitter stage and the positive pole of electric capacity C15 of audion VT7, is serially connected in emitter stage and the polarity electricity of audion VT8
Holding the resistance R19 between the negative pole of C16, negative pole is connected with the positive pole of amplifier P, positive pole is connected with the outfan of amplifier P
The electric capacity C18 connect, resistance R20, the P pole being serially connected between the outfan of amplifier P and the emitter stage of audion VT8 and amplifier
The outfan of P is connected, N pole is as the diode D11 of the outfan of this biasing circuit, and is serially connected in the N pole of diode D11
And the resistance R21 composition between the emitter stage of audion VT8；The drain electrode of described field effect transistor MOS and the colelctor electrode of audion VT7
It is connected；The positive pole of described electric capacity C15 connects power supply；The negative pole of described electric capacity C17 is connected with the N pole of diode D10；Described put
The big positive pole of device P is connected with the positive pole of electric capacity C15, its negative pole then colelctor electrode with audion VT8 is connected；Described biased electrical
The input on road is connected with oscillating circuit, its outfan is then connected with the GAIN2 pin processing chip U.
A kind of signal high-fidelity wireless audio reception system the most according to claim 2, it is characterised in that: described vibration electricity
Route audion VT5, audion VT6, be serially connected in the inductance between the colelctor electrode of audion VT5 and the colelctor electrode of audion VT6
The diode D9 that L2, N pole is connected with the emitter stage of audion VT6, P pole is connected with the input of biasing circuit, positive pole with
Electric capacity C9, the N pole that the emitter stage of audion VT5 is connected, negative pole is connected with the base stage of audion VT6 is with audion VT5's
Emitter stage is connected, the diode D8 of P pole ground connection, is serially connected in the vibration between the P pole of diode D8 and the base stage of audion VT5
Device X, the electric capacity C8 that positive pole is connected with the base stage of audion VT5, negative pole is connected with the emitter stage of audion VT5, and string
The resistance R9 composition being connected between base stage and the colelctor electrode of audion VT5；The P pole of described diode D8 and the N pole of diode D7
It is connected；The colelctor electrode of described audion VT5 is connected with audio signal compression circuit.
A kind of signal high-fidelity wireless audio reception system the most according to claim 3, it is characterised in that: described audio frequency is believed
Number compressor circuit is by audion VT3, and audion VT4, N pole is connected with front end receiver circuit, the current collection of P pole and audion VT3
Two poles that diode D3, P pole is connected with the N pole of diode D3, N pole is connected with the base stage of audion VT4 that pole is connected
The diode D4 that pipe D2, P pole ground connection, N pole emitter stage with audion VT3 after resistance R4 is connected, negative pole and audion VT3
The electric capacity C6 that base stage is connected, positive pole is sequentially connected through resistance R5 colelctor electrode with audion VT4 after resistance R6, negative pole
Be connected with the N pole of diode D4, electric capacity C5 that positive pole is connected with the base stage of audion VT4, be serially connected in the base of audion VT4
Resistance R8, P pole between the P pole of pole and diode D4 emitter stage with audion VT4 after resistance R7 is connected, N pole and two
Diode D6, the P pole that the N pole of pole pipe D4 is connected is connected with the N pole of diode D4, N pole is connected with the P pole of diode D4
Diode D5, and positive pole is connected with the N pole of diode D4, negative pole P pole with diode D4 after resistance R10 is connected
Electric capacity C7 composition；The negative pole of described electric capacity C7 is connected with the N pole of diode D7；The N pole of described diode D4 and front termination
Receipts circuit is connected；The base stage of described audion VT3 is connected with its colelctor electrode；The junction point of described resistance R5 and resistance R6 with
The colelctor electrode of audion VT5 connects power supply while being connected.
A kind of signal high-fidelity wireless audio reception system the most according to claim 4, it is characterised in that: termination before described
Receiving circuit by audion VT2, audion VT1, antenna E, negative pole is connected with the colelctor electrode of audion VT1, positive pole is through inductance L1
Electric capacity C1, the P pole being connected with antenna E afterwards is connected with the positive pole of electric capacity C1, N pole is connected with the N pole of diode D3 two
The N of pole pipe D1, the electric capacity C4 that minus earth, positive pole are connected with the N pole of diode D1 after electric capacity C3, positive pole and diode D1
The electric capacity C2 that pole is connected, negative pole negative pole with electric capacity C4 after resistance R2 is connected, be serially connected in audion VT1 emitter stage and
Resistance R1 between the negative pole of electric capacity C4, and it is serially connected in the resistance between the emitter stage of audion VT2 and the negative pole of electric capacity C4
R3 forms；The colelctor electrode of described audion VT2 is connected with the base stage of audion VT1, its base stage then with the N pole phase of diode D4
Connect.
A kind of signal high-fidelity wireless audio reception system the most according to claim 5, it is characterised in that: described process core
Sheet U is the integrated chip of LM386.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688333.7A CN106303825A (en) | 2016-08-18 | 2016-08-18 | A kind of signal high-fidelity wireless audio reception system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610688333.7A CN106303825A (en) | 2016-08-18 | 2016-08-18 | A kind of signal high-fidelity wireless audio reception system |
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| Publication Number | Publication Date |
|---|---|
| CN106303825A true CN106303825A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610688333.7A Withdrawn CN106303825A (en) | 2016-08-18 | 2016-08-18 | A kind of signal high-fidelity wireless audio reception system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395253A (en) * | 2017-08-21 | 2017-11-24 | 优利德科技(中国)有限公司 | It is a kind of to adapt in quick and high speed switch new network hunting device |
-
2016
- 2016-08-18 CN CN201610688333.7A patent/CN106303825A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395253A (en) * | 2017-08-21 | 2017-11-24 | 优利德科技(中国)有限公司 | It is a kind of to adapt in quick and high speed switch new network hunting device |
| CN107395253B (en) * | 2017-08-21 | 2023-04-18 | 优利德科技(中国)股份有限公司 | Novel network hunting device capable of adapting to fast and high-speed switch |
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Application publication date: 20170104 |