CN100499358C - Body-response vibration acoustics power amplifying circuit - Google Patents

Body-response vibration acoustics power amplifying circuit Download PDF

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Publication number
CN100499358C
CN100499358C CNB2005100016053A CN200510001605A CN100499358C CN 100499358 C CN100499358 C CN 100499358C CN B2005100016053 A CNB2005100016053 A CN B2005100016053A CN 200510001605 A CN200510001605 A CN 200510001605A CN 100499358 C CN100499358 C CN 100499358C
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China
Prior art keywords
circuit
low
output
pass filter
frequency
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Expired - Fee Related
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CNB2005100016053A
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Chinese (zh)
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CN1812254A (en
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青岛广泉
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BEIJING XINTIGAN ELECTRONIC TECHNOLOGY Co Ltd
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BEIJING XINTIGAN ELECTRONIC TECHNOLOGY Co Ltd
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Abstract

This invention is a kind of somesthetic vibration sounding power amplification circuit. It mainly concludes audio signal input part, audio signal output power amplifier part, remote controller part and power supply part. It also concludes a low-frequency circuit which can output low-frequency signals. This circuit is consisted with two-stage low-pass filter circuit, protection circuit and low-frequency signals amplifier. The high-frequency part of inputted audio signals is filtered by two-stage low-pass filter circuit. The low-frequency signals are amplified by low-frequency signals amplifier and outputted. The outputted signals make the energy transformer generate mechanical vibration effect. The vibration strength is controlled by remote controller.

Description

Body-response vibration acoustics efficiency amplifying circuit
Technical field
The present invention relates to a kind of output audio signal but also sound equipment power amplifier circuit that can the output low frequency signal of not only can having amplified.
Background technology
The major function of existing sound equipment power amplifier is that audio signal is amplified, and with loud speaker output, people are mainly used to music appreciating, reach the purpose of amusement, enjoyment, and people's body and mind is loosened.It is simple to have sound equipment power amplifier acoustic function now, and product lacks new meaning.A kind of circuit structure of existing audifier mainly comprises double-channel audio signal input circuit part, signal strength signal intensity adjusting part, sound output amplifier section, remote controller part and power unit, double-channel audio signal input circuit part provides the double-channel audio input signal for circuit, and regulate part through signal strength signal intensity and regulate, by the audio signal after amplification of sound output amplifier and the output amplification, reach the purpose of music appreciating with loud speaker output.The audio signal frequency scope that its circuit produces is wide, generally between 10Hz-10KHz, can not export the low frequency signal of certain frequency scope.Its low frequency signal can be produced mechanical oscillation by the transducer utilization, produces the therapeutic massage effect when human body uses.
Summary of the invention
In order to enrich the produce market of existing sound equipment power amplifier, the invention provides a kind of body-response vibration acoustics efficiency amplifying circuit, not only can amplify output audio signal, all right output low frequency signal, produce mechanical oscillation for transducer, make people in music appreciating, experience corresponding vibration, strengthen perception music signal.
As the means that solve described problem, body-response vibration acoustics efficiency amplifying circuit provided by the invention, comprise audio signal input circuit part and power unit, also comprise a low frequency signal circuit, be connected with described audio input signal circuit part, comprise low-pass filter circuit and low frequency signal regulating circuit, audio signal forms the low frequency output signal behind the low-pass filter circuit High frequency filter, and signal strength signal intensity is subjected to low frequency signal to regulate part control.
As a preferred version of the present invention, described low frequency signal generation circuit part also comprises a protective circuit, and circuit is carried out over-current over-voltage protection.
As another preferred version of the present invention; described low-pass filter circuit comprises second-order low-pass filter networking and low-pass filtering networking, three rank two parts; connect the input and output of protective circuit respectively; the input at second-order low-pass filter networking connects the output of described low frequency signal regulating circuit; audio signal is carried out High frequency filter, low-pass filtering networking, three rank output low frequency output signal.
As also preferred version of the present invention, described amplifying circuit also comprises a power control part branch, comprise signal transducer and d type flip flop, the input of signal transducer connects the audio signal that the L/R hybrid circuit is partly exported, and output connects d type flip flop, the output of d type flip flop is connected with a drive circuit, the adhesive of control relay, the contact of relay is serially connected in power input, reliably the alternating current input power supplying of circuit is controlled, when not having audio signal output, turn off general supply.
As another preferred version of the present invention, the low frequency signal frequency range that described low-pass filter circuit partly produces is between 20Hz to 100Hz.
Compared with prior art; body-response vibration acoustics efficiency amplifying circuit provided by the invention; because its circuit part has increased the low frequency signal circuit part; mainly by low-pass filter circuit; protective circuit and low-frequency signal amplifier constitute; the audio signal of input is carried out High frequency filter through multistage low pass filter; again low frequency signal is exported through amplifying; the low frequency signal frequency range that forms is between 20Hz to 100Hz; form stable mechanical oscillation effect for transducer; make people in music appreciating; the corresponding vibration of impression strengthens perception and enjoyment, and the function of acoustic product is enhanced.
Description of drawings
Fig. 1 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit of the present invention.
Fig. 2 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit first preferred embodiment of the present invention.
The schematic block circuit diagram of Fig. 3 body-response vibration acoustics efficiency amplifying circuit second preferred embodiment of the present invention.
The schematic block circuit diagram of Fig. 4 body-response vibration acoustics efficiency amplifying circuit most preferred embodiment of the present invention.
Fig. 5 A-5D is the electrical schematic diagram of a most preferred embodiment of body-response vibration acoustics efficiency amplifying circuit of the present invention.
Embodiment
See also Fig. 1, Fig. 1 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit of the present invention.Amplifying circuit comprises audio signal input circuit part 10, power unit 260, signal strength signal intensity adjusting part 20, sound output amplifier section 120 as seen from the figure.Low-pass filter circuit part 40 and low frequency signal regulating circuit part 50, audio signal forms the low frequency output signal behind the low-pass filter circuit High frequency filter, signal strength signal intensity is subjected to low frequency signal to regulate part 50 controls, and power unit 260 is transformed into interchange that each parts for circuit provide dc supply behind the direct current.
See also Fig. 2, Fig. 2 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit first preferred embodiment of the present invention.Low frequency signal generation circuit part comprises that also a protective circuit 30 and a power control part that circuit is carried out over-current over-voltage protection divides 60, and power control part divides total input power supply 280 of 60 pairs of power units 260 to implement outage control automatically.
See also Fig. 3, Fig. 3 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit second preferred embodiment of the present invention.Low-pass filter circuit comprises second-order low-pass filter networking 180 and low-pass filtering networking, three rank 190 two parts; connect the input and output of protective circuit 200 respectively; the input at second-order low-pass filter networking 180 connects the output of described low frequency signal regulating circuit 50; audio signal is carried out High frequency filter, low-pass filtering networking, three rank 190 output low frequency output signals.
See also Fig. 4, Fig. 4 is the schematic block circuit diagram of body-response vibration acoustics efficiency amplifying circuit most preferred embodiment of the present invention.
Fig. 5 A-Fig. 5 D is the electrical schematic diagram of this embodiment.As most preferred embodiment of the present invention, its circuit formation is: double-channel audio signal input circuit part 100, signal strength signal intensity are regulated part 50, sound output amplifier section 120, remote controller part 125 and power unit 260.Amplifying circuit of the present invention also comprises the low frequency signal circuit part; by the L/R hybrid circuit 160 that connects successively; low frequency signal regulating circuit 50; low-pass filter circuit; protective circuit 200 and low frequency signal amplifier section 210 constitute; the input of L/R hybrid circuit part 160 is connected with described double-channel audio signal input circuit part 100; the double-channel audio conversion of signals is become the SCVF single channel voice frequency signal; power by low frequency signal regulating circuit 50 adjusting input signals; be subjected to the control of remote controller and electronic potentiometer 170; audio signal is through low-pass filter circuit filtering high-frequency signal; amplify output through the low frequency signal amplifier section, transducer utilizes low frequency signal to produce the mechanical oscillation effect.
Protective circuit 200 of the present invention comprises four diodes, two triodes and signal feedback circuit, two triodes butt joints, and emitter grounding, the collector electrode of triode is connected with the output of described second-order low-pass filter, connects the input of feedback circuit simultaneously; Four diodes constitute bridge circuit, and the importation connects two groups of feedback signals of feedback circuit respectively, and the output of feedback circuit connects the input of described third-order low-pass filter; Two output ports of bridge circuit connect the base stage of two triodes respectively by base resistance, control the break-make of its triode, and when output voltage was too high, the triode conducting was with signal ground.Overvoltage phenomenon when protective circuit makes vibration is effectively contained that automatically during overvoltage, no signal is exported.
Power control part of the present invention cuts off the power supply when dividing 60 to realize the absence of audio input automatically, comprise signal transducer 140 and d type flip flop 145, the input of signal transducer 140 connects the audio signal of L/R hybrid circuit part 160 outputs, output connects d type flip flop 145, the output of d type flip flop 145 is connected with a drive circuit 150, the adhesive of control relay, the contact 245 of relay is serially connected in the power input 280 of amplifying circuit, during the output of absence of audio signal, automatically the power supply of relay coil 150 breaks, the normally opened contact 245 that makes relay be serially connected in the power supply input circuit disconnects, and cuts off input circuit general supply 260, makes power supply reach the purpose of automatic control.
Signal strength signal intensity of the present invention is regulated part 20 and is comprised that a volume is regulated electronic potentiometer 110 and a volume is regulated current potential adjusting resistance 130, volume is regulated current potential adjusting resistance 130 and is positioned at described remote controller end, and it is regulated tap and connects the control end that described volume is regulated electronic potentiometer 110.The low frequency signal regulating circuit comprises a low frequency signal adjusting electronic potentiometer 170 and an adjusting resistance 220, regulates resistance 220 and is positioned at described remote controller 125 ends, and it is regulated tap and connects the control end that described low frequency signal is regulated electronic potentiometer 170.Be the intensity of scalable audio signal or low frequency signal directly by the adjusting knob of regulating on the remote controller.
Power unit of the present invention, its ac input end 280 is after the transformer transformation, the low-voltage alternating-current input connects the voicefrequency circuit power unit, through voicefrequency circuit rectifier bridge and voicefrequency circuit three-terminal voltage-stabilizing pipe, the voicefrequency circuit rectifier bridge provides dc supply for the sound output amplifier, and the other parts for voicefrequency circuit provide stable dc supply after the voltage stabilizing of three-terminal voltage-stabilizing pipe.
The interchange input of power unit of the present invention is after the transformer transformation, the low-voltage alternating-current input connects the low-frequency channel power unit, comprise low-frequency channel rectifier bridge and two low-frequency channel three-terminal voltage-stabilizing pipes, the low-frequency channel rectifier bridge directly provides dc supply for the low frequency signal amplifier section, after the positive-negative output end of rectifier bridge passes through the voltage stabilizing of three-terminal voltage-stabilizing pipe respectively, for the other parts of low-frequency channel provide stable dc supply.
The ac input end of power unit of the present invention connects the power unit of control circuit, comprise control circuit part AC transformer and control circuit partial rectification bridge, the rectifier bridge of control circuit part provides dc supply for control circuit, simultaneously with after the hand touch type power supply switch of remote controller is connected in series, the control end that connects d type flip flop is by the break-make of d type flip flop control electric power loop input power supply.
The electrical schematic diagram of most preferred embodiment of the present invention sees also Fig. 5, main power transformer TF2 has adopted two groups of secondary low-voltages to exchange output, one group of 18V principal voltage is behind rectifier bridge D10 rectifying and wave-filtering, for low frequency signal amplifier section IC10 LM4700TF provides positive-negative power, regulate through regulating resistance VR101, simultaneously after integrated three-terminal regulator block IC11 LM7808 and IC12 LM7908 voltage stabilizing, for the preamplifier part power supply use of low frequency part.Another group voltage is power transformer T1, secondary 10V alternating voltage is capacitor filtering after rectifier bridge D4 rectification, for sound output amplifier IC5 TA8229K provides power supply, the preposition amplifier section power supply that amplifies for audio frequency after IC13 LM78L005 voltage stabilizing is used simultaneously.
Audio frequency amplifier section of the present invention, signal frequency be usually located between the 10Hz-10KHz or 5Hz-2 ten thousand Hz between, use electronic potentiometer IC1 M5222 control volume, 5 pin of IC1M 5222 are control ends, it is to the attenuation of the height decision IC1 M5222 output signal of 3 pin COM level, the control level and the degree of decay are linear substantially, when control level from 0V drop to-during 200mV, the degree of decay drops to-60dB from 0dB, just decay 1000 times, 5 pin of IC1M5222 link to each other with volume potentiometer VR102, when potentiometer VR102 resistance hour 5 pin incoming level descant amount maximums, the output of IC1 M5222 inputs to audio-frequency power amplifier IC5 TA8229K amplifying power signal by the IC3 coupling, hinders output surely by dual track CN 8 and 8 Ω, power 1W.The relation that also is noted that the control level of IC1 M5222 and the degree of decay simultaneously is not subjected to the influence of power supply, so no matter the audio frequency amplifier section adopts the 5V single power supply, still low frequency amplifier section ± 8V power supply, the operating state of IC1 M5222 all is similar.
Low frequency signal amplifier section 210 of the present invention uses electronic potentiometer IC8 M5222 control vibratory output; constitute the two-way low-pass filter circuit respectively with IC6 TA75558P and remove high-frequency signal; the two-way filter circuit is respectively second-order low-pass filter network and three rank low-pass filter networks; cut-off frequency fc is respectively at 191Hz and 103Hz; thereby being added with protective circuit simultaneously plays the amplitude limit effect to signal the power amplifier IC1 LM4700TF of back is protected; protective circuit is by D11; D13; D15; D16 and to pipe Q1 BC639; Q2 BC640 constitutes; 1 of IC4; the signal feedback of 7 pin output is given protective circuit, two triode Q1 when signal voltage surpasses certain numerical value; the Q2 forward conduction reaches protective effect with signal ground; by low-frequency power amplifier LM4700TF amplifying signal power, single channel 4 Ω hinder output surely at last.The two-way low-pass filter circuit carries out effective high-frequency ripple with frequency range audio signal between 30Hz-10KHz, forms the high-quality low frequency signal of frequency range between 20Hz-100Hz, uses transducer to produce low-frequency mechanical vibrations, enjoys for human body.
It is standby or work that power control part of the present invention divides the operating state of using signal transducer IC7 NJM2072D and d type flip flop IC9 TC4013BP to control complete machine.Whether IC7 NJM2072D is used for detecting complete machine the signal input, if complete machine is in running order, as the long-time 5-15min of IC7NJM2072D input end signal during less than 13.6mV, output is exported the R that high-low level is given IC9 TC4013BP respectively, the S end, make the D of IC9 TC4013BP, though CK under what state, Q is caused low level, Q causes high level, connect the light-emitting diode D51 conducting of Q, relay ST tripping, complete machine is transformed into holding state by work.This process signal sensor IC 7NJM2072D has realized the function of complete machine automatic stand-by when not having input signal for a long time.When signal is imported, the R of IC9 TC4013BP, the whole input low levels of S, at this moment its output is subjected to D, CK control, IC9 TC4013BP is that rising edge triggers, the switch SW of touching on the remote control panel is whenever pressed once, CK obtains a pulse signal, trigger once, D gives the Qn+1 assignment, and Qn+1 also can overturn thereupon, and D directly links to each other in the Q end, so at this moment Qn+1 again assignment give D, so just make each pulse all make Qn+1 and Qn+1 upset, Q and Q control two triode Q4 respectively, the conducting of Q5 with end, which which pipe conducting of connecting later of output high level, relay adhesive green light is bright during the Q4 conducting, and it is bright that relay disconnects red light during the Q5 conducting, so touch a switch SW whenever by once, two kinds of operating states of work and standby are changed once.
The low frequency signal frequency range that the power amplifier of above-mentioned most preferred embodiment forms also can form stable mechanical oscillation effect for transducer between 10 to 150Hz between 20Hz to 100Hz.
Body-response vibration acoustics efficiency amplifying circuit provided by the invention not only can be made into sound equipment, can also directly be applied in the CD Player field, with the integrated making of CD player, is about to described CD player and described body-response vibration acoustics efficiency amplifying circuit combines.At this moment, low frequency signal circuit part and CD player can be set together, also can only low-pass filter circuit and CD player be set together, to be fit to the user demand of different product.For example has better effect, described CD player is provided with denoising device.
Based on design concept of the present invention, protection scheme of the present invention is not limited to above disclosed content, and any equivalent transformation of being done on this basis all should be within protection scope of the present invention.

Claims (8)

1, a kind of body-response vibration acoustics efficiency amplifying circuit, link to each other with the low-frequency vibration circuit with voicefrequency circuit, comprise the audio signal input circuit part and the power unit that produce multipath audio signal, it is characterized in that: this amplifying circuit also comprises a low frequency signal circuit part that audio signal is carried out High frequency filter and output low frequency signal, this part is connected with described audio signal input circuit part, obtain audio signal, this part comprises low-pass filter circuit and low frequency signal regulating circuit, audio signal output low frequency signal behind the low-pass filter circuit High frequency filter of input, and be subjected to the low frequency signal regulating circuit to regulate control;
Described low-pass filter circuit comprises second-order low-pass filter network and three rank low-pass filter network two parts; described second-order low-pass filter network, protective circuit and three rank low-pass filter networks are connected in series in proper order; the input of described second-order low-pass filter network connects the output of described low frequency signal regulating circuit; audio signal is carried out High frequency filter, three rank low-pass filter network output low frequency output signals.
2, body-response vibration acoustics efficiency amplifying circuit according to claim 1 is characterized in that: described protective circuit is an overcurrent-overvoltage protecting circuit, and corresponding overcurrent or overvoltage protection are provided when circuit exists overcurrent or overpressure situation.
3, body-response vibration acoustics efficiency amplifying circuit according to claim 2, it is characterized in that: described protective circuit comprises four diodes, two triodes and feedback circuit, two triode butt joints, emitter grounding, collector electrode connects the output of second-order low-pass filter, connects the input of feedback circuit simultaneously; Four diodes constitute bridge circuit, the importation connects two groups of feedback signals of feedback circuit respectively, two output ports of bridge circuit connect the base stage of two triodes respectively by base resistance, control the break-make of its triode, when output voltage is too high, the triode conducting is with signal ground.
4, body-response vibration acoustics efficiency amplifying circuit according to claim 1, it is characterized in that: described amplifying circuit also comprises a power control part branch, described power control part branch comprises signal transducer and d type flip flop and relay drive circuit and relay, the input of signal transducer connects the audio signal input, output connects d type flip flop, the output of d type flip flop connects a relay drive circuit, the adhesive of control relay, and the contact of relay is serially connected in power input.
5, body-response vibration acoustics efficiency amplifying circuit according to claim 4, it is characterized in that: the ac input end of described power unit connects the power unit that power control part divides, the power control part branch comprises AC transformer and the rectifier that dc energy source is provided, rectifier is with after the hand touch type power supply switch of remote controller is connected in series, the control end that connects d type flip flop is by the break-make of d type flip flop control electric power loop input power supply.
6, body-response vibration acoustics efficiency amplifying circuit according to claim 2, it is characterized in that: described low frequency signal regulating circuit comprises a low frequency signal adjusting electronic potentiometer and an adjusting resistance, regulate resistance and be positioned at the remote controller end, it is regulated tap and connects the control end that described low frequency signal is regulated electronic potentiometer.
7, body-response vibration acoustics efficiency amplifying circuit according to claim 1, it is characterized in that: the low-voltage alternating-current input of described power unit connects the voicefrequency circuit power unit, comprise voicefrequency circuit rectifier bridge and voicefrequency circuit three-terminal voltage-stabilizing pipe, the voicefrequency circuit rectifier bridge provides dc supply for the sound output amplifier, and the other parts for voicefrequency circuit provide stable dc supply after the voltage stabilizing of three-terminal voltage-stabilizing pipe;
The low-voltage alternating-current input of described power unit connects low-frequency vibration circuit power part, the low-frequency vibration circuit comprises low-frequency vibration circuit power part and low-frequency signal amplifier, the low-frequency vibration circuit power partly comprises low-frequency channel rectifier bridge and two low-frequency channel three-terminal voltage-stabilizing pipes, low-frequency vibration circuit rectifier bridge directly provides dc supply for the low frequency signal amplifier section, after the positive-negative output end of rectifier bridge passes through the voltage stabilizing of three-terminal voltage-stabilizing pipe respectively, for the other parts of low-frequency vibration circuit provide stable dc supply.
8, body-response vibration acoustics efficiency amplifying circuit according to claim 1 is characterized in that: the low frequency signal frequency range that described low-pass filter circuit is partly exported is more than or equal to 20Hz, and, smaller or equal to 100Hz.
CNB2005100016053A 2005-01-24 2005-01-24 Body-response vibration acoustics power amplifying circuit Expired - Fee Related CN100499358C (en)

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CN100499358C true CN100499358C (en) 2009-06-10

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US8811526B2 (en) 2011-05-31 2014-08-19 Keyssa, Inc. Delta modulated low power EHF communication link
TWI569031B (en) * 2011-06-15 2017-02-01 奇沙公司 Proximity sensing and distance measurement using ehf signals
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KR20150055030A (en) 2012-09-14 2015-05-20 키사, 아이엔씨. Wireless connections with virtual hysteresis
EP2932556B1 (en) 2012-12-17 2017-06-07 Keyssa, Inc. Modular electronics
EP2974504B1 (en) 2013-03-15 2018-06-20 Keyssa, Inc. Ehf secure communication device
KR101700789B1 (en) 2013-03-15 2017-01-31 키사, 아이엔씨. Extremely high frequency communication chip
CN105234601A (en) * 2015-11-03 2016-01-13 成都埃森普特科技股份有限公司 Method and circuit for remote control current of output cable of electric welding machine

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