CN203225731U - Power amplifying device and adjustable standby circuit thereof - Google Patents
Power amplifying device and adjustable standby circuit thereof Download PDFInfo
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- CN203225731U CN203225731U CN 201320255689 CN201320255689U CN203225731U CN 203225731 U CN203225731 U CN 203225731U CN 201320255689 CN201320255689 CN 201320255689 CN 201320255689 U CN201320255689 U CN 201320255689U CN 203225731 U CN203225731 U CN 203225731U
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Abstract
The utility model discloses a power amplifying device and an adjustable standby circuit thereof. According to the adjustable standby circuit, the output of corresponding control signals from a control module to a reference adjustment module is adjusted by a key module through input. The reference adjustment module outputs corresponding reference voltage to a comparison module according to the received control signals. The comparison module compares video signals with the reference voltage and outputs comparison signals. The control module controls work of a standby control module according to the comparison signals for controlling work of a power amplifying module. According to the utility model, the power amplifying module can work stably even when the input video signal is very weak. And the magnitude of reference voltage output by the reference adjustment module can be controlled and adjusted through the key module for adjusting the control module in accuracy of judging whether the audio signals are input or not. Therefore, a problem that the power amplifying device enters into a standby mode when weak signal input of the power amplifying device is judged to be no signal input by mistake is solved, and user experience is improved.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of power amplifying device and adjustable stand-by circuit thereof.
Background technology
Present audio power multiplying arrangement on the market can be/do not have audio signal input to come control appliance to keep operating state/enter holding state mostly by detection.The audio power multiplying arrangement is inaccurate to the judgement of absence of audio input, and when the audio signal of importing was big, the audio power multiplying arrangement can normally amplify input audio signal; When input audio signal hour, the audio power multiplying arrangement can judge by accident to be decided to be does not have the audio signal input, the audio power multiplying arrangement enters holding state.
Yet for different audio-frequence player devices, the output audio signal size is not quite similar, even with a audio-frequence player device, according to the custom of different user, output audio signal is also inequality.Can cause a problem like this, when the user regulates audio-frequence player device and exports less audio signal, power amplifier is judged to be does not have the audio signal input, enter holding state, the user need wake power amplification device up again by start or reset button again, play a period of time after, power amplifier can be judged to be does not again have the audio signal input, will enter holding state again, so again and again, bring great inconvenience to the user; The audio power multiplying arrangement can not be implemented in the user and regulate input signal when very little, normal steady operation.
The utility model content
Main purpose of the present utility model is for providing a kind of to the adjustable power amplifying device of absence of audio signal determining accuracy and adjustable stand-by circuit thereof.
The utility model proposes a kind of adjustable stand-by circuit, be connected between the signal amplification module and power amplifier module of power amplifying device, comprise the Opportunity awaiting control for linear module, control module, benchmark adjustment module, comparison module and the key-press module that are connected with power amplifier module, wherein:
The first input end of described comparison module connects the signal output part of described signal amplification module, receives the audio signal of described signal amplification module output; Second input of described comparison module connects the benchmark output of described benchmark adjustment module, receives the reference voltage of described benchmark adjustment module output; The comparison output of described comparison module connects the signal controlling input of described control module, and described comparison module is used for the signal that its first input end and second input receive is compared, and the output comparison signal is to described control module;
The button control input end of described control module connects described key-press module, the button control output end of described control module connects the selection control end of described benchmark adjustment module, described control module is used for the signal input according to described key-press module, controls described benchmark adjustment module by described selection control end and exports corresponding reference voltage; The signal controlling output of described control module connects described Opportunity awaiting control for linear module, and described control module also is used for controlling the work of described Opportunity awaiting control for linear module or disconnection according to the comparison signal that receives.
Preferably, described benchmark adjustment module comprises the multiway analog switch chip, described multiway analog switch chip comprises a plurality of benchmark output pins for the benchmark input pin that receives different reference voltage inputs, output reference voltage and selects the control pin, described benchmark output pin connects described benchmark output, and described selection control pin connects described selection control end;
Described comparison module is the comparator chip, the positive input pin of described comparator chip connects described first input end, the reversed input pin of described comparator chip connects described second input, and the output pin of described comparator chip connects described relatively output.
Preferably, described control module comprises the MCU control chip, described MCU control chip comprises the signal controlling input pin, by key control input pin, signal controlling output pin with by the key control output pin, described signal controlling input pin connects described signal controlling input, describedly connect described button control input end by the key control input pin, described signal controlling output pin connects described signal controlling output, describedly connects described button control output end by the key control output pin.
Preferably, described benchmark input pin is four, and four benchmark input pins are respectively: the first benchmark input pin, the second benchmark input pin, the 3rd benchmark input pin and the 4th benchmark input pin; Described selection control pin is two, and described signal controlling output pin is two, and described is two by the key control output pin, selects control pin and two to connect one to one by the key control output pin for two.
Preferably, described benchmark adjustment module also comprises first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance, described first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance connect successively, described first resistance differs from an end that is connected with described second resistance and connects power supply, and described the 5th resistance differs from an end ground connection that is connected with described the 4th resistance; Described first resistance is connected the described first benchmark input pin with the end that second resistance links to each other, described second resistance is connected the described second benchmark input pin with the end that the 3rd resistance links to each other, described the 3rd resistance is connected described the 3rd benchmark input pin with the end that the 4th resistance links to each other, and described the 4th resistance is connected described the 4th benchmark input pin with the end that the 5th resistance links to each other; Described benchmark output pin is connected with described benchmark output through described the 6th resistance; Described the 7th resistance one end connects described power supply, and the other end connects one and selects the control pin; Described the 8th resistance one end connects described power supply, and the other end connects another and selects the control pin.
Preferably, described key-press module comprises key switch, the 9th resistance and the tenth resistance; Described the 9th resistance one end connects described power supply, and the other end connects described by the key control input pin with through described key switch ground connection through described the tenth resistance.
Preferably, described Opportunity awaiting control for linear module comprises the power amplifier negative power supply of submodule and the power amplifier submodule of just powering, just the powering switch control end of submodule of described power amplifier connects a signal controlling output pin, and the switch control end of the negative power supply of described power amplifier submodule connects another signal controlling output pin; Just the powering output of submodule of described power amplifier connects the positive supply input of described power amplifier module, and the output of the negative power supply of described power amplifier submodule connects the negative supply input of described power amplifier module.
Preferably, the described power amplifier submodule of just powering comprises a NPN type triode, the first positive-negative-positive triode, first electric capacity, second electric capacity, the 11 resistance and the 12 resistance;
The base stage of a described NPN type triode is connected through the switch control end of described the 11 resistance with the described submodule of just powering, a described NPN type transistor emitter ground connection, a described NPN type transistor collector connects the base stage of the described first positive-negative-positive triode through described the 12 resistance; The collector electrode of the described first positive-negative-positive triode connects the positive supply input of described power amplifier module, and the described first positive-negative-positive transistor emitter connects the PWR positive voltage; Described first electric capacity, one end connects described PWR positive voltage, other end ground connection; Described second electric capacity, one end connects described PWR positive voltage, other end ground connection.
Preferably, the negative power supply of described power amplifier submodule comprises the 2nd NPN type triode, the second positive-negative-positive triode, the 3rd electric capacity, the 4th electric capacity, the 13 resistance, the 14 resistance and the 15 resistance;
The base stage of the described second positive-negative-positive triode is connected with the switch control end of described negative power supply submodule through described the 15 resistance, the described second positive-negative-positive transistor emitter connects described power supply, and the described second positive-negative-positive transistor collector connects the base stage of described the 2nd NPN type triode through described the 3rd resistance; The emitter of described the 2nd NPN type triode is connected with its base stage through described the 14 resistance, the emitter of described the 2nd NPN type triode also is connected with the PWR negative voltage, and the collector electrode of described the 2nd NPN type triode is connected with the negative supply input of described power amplifier module; One end ground connection of described the 3rd electric capacity, the other end connects described PWR negative voltage; One end ground connection of described the 4th electric capacity, the other end connects described PWR negative voltage.
The utility model also proposes a kind of power amplifying device, comprises aforesaid adjustable stand-by circuit.
Power amplifying device of the present utility model and adjustable stand-by circuit thereof, input push button signalling by key-press module arrives control module, control module is exported corresponding control signal to the benchmark adjustment module according to the push button signalling that receives, control benchmark adjustment module is exported corresponding reference voltage to comparison module, comparison module is according to the reference voltage difference that receives, comparison module allows the minimum value respective change of the audio signal of (namely guaranteeing has pulse signal output) input, the reference voltage that receives is more little, allows the minimum audio signal of input just more little; Comparison module has pulse signal output, Opportunity awaiting control for linear module operate as normal then, power amplifier module operate as normal; So the input by key-press module is regulated, can be so that when the audio signal of audio-frequence player device input is very little, also can make the power amplifier module steady operation; And can regulate the reference voltage size of control benchmark adjustment module output by key-press module, can regulate control module to whether having audio signal to import the accuracy of judgement, solved power amplifying device when small-signal is imported, erroneous judgement has improved user's experience for the no signal input makes power amplifying device enter the problem of standby.
Description of drawings
Fig. 1 is the module diagram of adjustable stand-by circuit one embodiment of the utility model and signal amplification module and power amplifier module formation;
Fig. 2 is the circuit diagram of another embodiment of the adjustable stand-by circuit of the utility model and signal amplification module and power amplifier module formation;
Fig. 3 is just the powering circuit diagram of submodule of power amplifier among Fig. 2;
Fig. 4 is the circuit diagram of the negative power supply of power amplifier submodule among Fig. 2.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, Fig. 1 be adjustable stand-by circuit one embodiment of the utility model and signal amplification module and power amplifier module constitute module diagram, the adjustable stand-by circuit that this embodiment proposes, be connected between the signal amplification module 10 and power amplifier module 30 of power amplifying device, comprise the Opportunity awaiting control for linear module 20, control module 40, benchmark adjustment module 50, comparison module 60 and the key-press module 70 that are connected with power amplifier module 30, wherein:
The first input end of comparison module 60 connects the signal output part of signal amplification module 10, receives the audio signal of signal amplification module 10 outputs; Second input of comparison module 60 connects the benchmark output of benchmark adjustment module 50, receives the reference voltage of benchmark adjustment module 50 outputs; The signal controlling input of the comparison output link control module 40 of comparison module 60, comparison module 60 are used for the signal that its first input end and second input receive is compared, and the output comparison signal is to control module 40;
The button control input end of control module 40 connects key-press module 70, the button control output end of control module 40 connects the selection control end of benchmark adjustment module 50, control module 40 is used for the signal input according to key-press module 70, by the corresponding reference voltage of described selection control end control benchmark adjustment module 50 outputs; The signal controlling output of control module 40 connects Opportunity awaiting control for linear module 20, and control module 40 also is used for according to comparison signal control Opportunity awaiting control for linear module 20 work that receive or disconnects.
Concrete, the operation principle of the adjustable stand-by circuit of present embodiment is as follows:
Audio-frequence player device connects signal amplification module 10 input audio signals and gives signal amplification module 10, the signal output part of described signal amplification module 10 also is connected with the input of power amplifier module 30, and the audio signal after the signal output part of signal amplification module 10 will amplify outputs to power amplifier module 30 respectively and carries out power amplification output and output to comparison module 60; Benchmark adjustment module 50 output reference voltages are given comparison module 60, comparison module 60 compares output pulse waveform to control module 40 with audio signal and the reference voltage that receives, control module 40 according to be connected to/the corresponding signal of input and output of no pulse waveform is to Opportunity awaiting control for linear module 20, with the work/disconnection of control Opportunity awaiting control for linear module 20, and then 30 work or the standbies of control power amplifier module; Key-press module 70 input push button signallings are to control module 40, make the corresponding control signal of control module 40 outputs to benchmark adjustment module 50, benchmark adjustment module 50 is according to the control signal that receives, regulate the corresponding reference voltage value of output, reaching control comparison module 60 has/output of no pulse waveform, realizes that the operating state of power amplifier module 30 can be controlled.The reference voltage of reference voltage module 50 outputs is more little, guaranteeing that comparison module 60 has under the situation of pulse signal output (namely guaranteeing power amplifier module 30 energy steady operations), the lower limit of audio signal that allows to be input to comparison module 60 is littler, and the accuracy whether 40 pairs of control modules have the audio signal input to judge is more high.
The adjustable stand-by circuit of present embodiment, the operating state that can regulate control power amplifier modules 30 by key-press module 70 input when making audio signal in the audio-frequence player device input very little, also can make the output of power amplifier module 30 steady operations; And can regulate the reference voltage size of control benchmark adjustment module 50 outputs by key-press module 70, regulate the accuracy whether 40 pairs of control modules have the audio signal input to judge, solved power amplifying device when little audio signal is imported, erroneous judgement has improved user's experience for the no signal input makes power amplifying device enter the problem of standby.
Concrete, with reference to Fig. 2, benchmark adjustment module 50 comprises multiway analog switch chip 51, multiway analog switch chip 51 comprises a plurality of for the benchmark input pin (X0 that receives different reference voltage inputs, X1, X2 and X3 are the benchmark input pin, below in the declaratives, do not specify the not label of which benchmark input pin), (A and B select the control pin for the benchmark output pin X of output reference voltage and selection control pin, below in the declaratives, which does not specify select not label of control pin), benchmark output pin X connects the benchmark output, selects the control pin to connect and selects control end; Multiway analog switch chip 51 is controlled its benchmark output pin X output from the reference voltage of corresponding benchmark input pin input according to its control signal of selecting the control pin to receive.
In the present embodiment, the benchmark input pin is four, and four benchmark input pins are respectively: the first benchmark input pin X0, the second benchmark input pin X1, the 3rd benchmark input pin X2 and the 4th benchmark input pin X3; Selecting the control pin is two, and the signal controlling output pin is two, is two by the key control output pin, selects control pin and two to connect one to one by the key control output pin for two; Selection is controlled pin A correspondence and is connected by key control output pin D2, and selection is controlled pin B correspondence and is connected by key control output pin D1.Need to prove that present embodiment only is with four of benchmark input pins, selects two of pins of control, two of signal controlling output pins and be example by two of key control output pins, carefully states, and does not limit protection range of the present utility model.
Further, benchmark adjustment module 50 also comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7 and the 8th resistance R 8, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 connect successively, first resistance R 1 differs from an end that is connected with second resistance R 2 and connects power supply, and the 5th resistance R 5 differs from an end ground connection that is connected with the 4th resistance R 4; First resistance R 1 is connected the first benchmark input pin X0 with the end that second resistance R 2 links to each other, second resistance R 2 is connected the second benchmark input pin X1 with the end that the 3rd resistance R 3 links to each other, the 3rd resistance R 3 is connected the 3rd benchmark input pin X2 with the end that the 4th resistance R 4 links to each other, and the 4th resistance R 4 is connected the 4th benchmark input pin X3 with the end that the 5th resistance R 5 links to each other; Benchmark output pin X is connected with the benchmark output through the 6th resistance R 6; The 7th resistance R 7 one ends connect power supply, and the other end connects one and selects the control pin; The 8th resistance R 8 one ends connect power supply, and the other end connects another and selects the control pin.In the present embodiment, power supply is+the 5V voltage source.
The concrete operation principle of benchmark adjustment module 50 is in the present embodiment: first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4 and the 5th resistance R 5 are formed a bleeder circuit, right+5V voltage source dividing potential drop, four different reference voltage inputs of different dividing points acceptance that the benchmark input pin connects respectively.Two select the control pin control module 40 do not export control signal by the key control output pin time, be initial condition, because two are selected the control pin all to connect+the 5V voltage source through resistance, described initial condition all is high level, during initial condition, benchmark output pin X output be four the road from the reference voltage of four benchmark input pins inputs a road; When selecting the level state change of control pin, benchmark output pin X can export the accurate voltage of a corresponding roadbed.
Further, key-press module 70 comprises key switch S, the 9th resistance R 9 and the tenth resistance R 10; The 9th resistance R 9 one ends connect power supply, and the other end connects by key control input pin E with through key switch S ground connection through the tenth resistance R 10.The operation principle of key-press module 70 is: when key switch S pressed, power supply was low level through the 9th resistance R 9 and key switch S ground connection successively by key control input pin E; When key switch S upspring, power supply was connected with the tenth resistance R 10 by key control input pin E through the 9th resistance R 9 successively, is high level by key control input pin E; During default conditions, key switch S is the state of upspringing, and is high level by key control input pin E, whenever clicks key switch S, all can produce a low level by key control input pin E, namely forms a pulse.
Concrete, the control operation principle of MCU control chip 41 is: by pulse of the every input of key control input pin E, the current potential by key control input pin E of MCU control chip 41 changes once, thereby the corresponding current potential that changes the selection control pin of multiway analog switch chip 51 realizes changing the reference voltage that outputs to the comparator chip; The reference voltage of comparator chip reversed input pin 2 inputs changes, the comparison signal waveform of output also can correspondingly change, for example, before key-press module 70 is regulated, the reference voltage that is input to the comparator chip is bigger, comparator chip no pulse waveform outputs to the signal controlling input pin F of MCU control chip 41, and then MCU control chip 41 control Opportunity awaiting control for linear modules 20 disconnect power amplifier module 30 standbies; After key-press module 70 is regulated, the less reference voltage of benchmark adjustment module 50 outputs, the comparator chip has impulse waveform to output to MCU control chip 41,20 work of MCU control chip 41 control Opportunity awaiting control for linear modules, then power amplifier module 30 work.
Concrete, Opportunity awaiting control for linear module 20 comprises the power amplifier negative power supply of submodule 21 and the power amplifier submodule 22 of just powering, just the powering switch control end 6 of submodule 21 of power amplifier connects a signal controlling output pin G, and the switch control end 7 of the negative power supply of power amplifier submodule 22 connects another signal controlling output pin H; Just the powering output of submodule 21 of power amplifier connects the positive supply input 8 of power amplifier module 30, and the output of the negative power supply of power amplifier submodule 22 connects the negative supply input 9 of power amplifier module 30.
Concrete, with reference to Fig. 3, the power amplifier submodule 21 of just powering comprises a NPN type triode Q1, the first positive-negative-positive triode Q2, first capacitor C 1, second capacitor C 2, the 11 resistance R 11 and the 12 resistance R 12; The base stage of the one NPN type triode Q1 is connected with the switch control end of the submodule of just powering through the 11 resistance R 11, the one NPN type triode Q1 grounded emitter, a NPN type triode Q1 collector electrode connect the base stage of the first positive-negative-positive triode Q2 through the 12 resistance R 12; Positive supply input 8, the first positive-negative-positive triode Q2 emitters that the collector electrode of the first positive-negative-positive triode Q2 connects power amplifier module 30 connect the PWR positive voltage; First capacitor C, 1 one ends connect PWR positive voltage, other end ground connection; Second capacitor C, 2 one ends connect PWR positive voltage, other end ground connection.
Just the powering operation principle of submodule 21 of power amplifier is: when its switch control end 6 input low levels, and a not conducting of NPN type triode Q1, whole module is not worked; When its switch control end 6 input high levels, the one NPN type triode Q1 conducting, the base earth of the first positive-negative-positive triode Q2, the first positive-negative-positive triode Q2 conducting, the collector electrode output PWR positive electricity of the first positive-negative-positive triode Q2 is pressed onto the positive supply input 8 of power amplifier module 30.
Concrete, with reference to Fig. 4, the negative power supply of power amplifier submodule 22 comprises the 2nd NPN type triode Q4, the second positive-negative-positive triode Q3, the 3rd capacitor C 3, the 4th capacitor C 4, the 13 resistance R 13, the 14 resistance R 14 and the 15 resistance R 15; The base stage of the second positive-negative-positive triode Q3 is connected through the switch control end of described the 15 resistance R 15 with negative power supply submodule, the second positive-negative-positive triode Q3 emitter connects power supply, and the second positive-negative-positive triode Q3 collector electrode connects the base stage of the 2nd NPN type triode Q4 through the 13 resistance R 13; The emitter of the 2nd NPN type triode Q4 is connected with its base stage through the 14 resistance R 14, and the emitter of the 2nd NPN type triode Q4 also is connected with the PWR negative voltage, and the collector electrode of the 2nd NPN type triode Q4 is connected with the negative supply input 9 of power amplifier module 30; One end ground connection of the 3rd capacitor C 3, the other end connects the PWR negative voltage; One end ground connection of the 4th capacitor C 4, the other end connects the PWR negative voltage.
The operation principle of the negative power supply of power amplifier submodule 22 is: when its switch control end 7 input high levels, and the second not conducting of positive-negative-positive triode Q3, whole module work; When its switch control end 7 input low levels, the second positive-negative-positive triode Q3 conducting makes the 2nd NPN type triode Q4 conducting then, and the collector electrode output PWR negative electricity of the 2nd NPN type triode Q4 is pressed onto the negative supply input 9 of power amplifier module 30.
When power amplifier module 30 has the voltage input at its positive supply input 8 and negative supply input 9, work output; When its positive supply input 8 and the input of negative supply input 9 no-voltages, standby.
Concrete, the comparator chip can be the LM339 chip, and multiway analog switch chip 51 can be the 74HC4052 chip, and MCU control chip 41 can be the M054LAN chip.When MCU control chip 41 is the M054LAN chip, signal controlling input pin F is 19 pin of M054LAN chip, signal controlling output pin G is 27 pin of M054LAN chip, signal controlling output pin H is 48 pin of M054LAN chip, be 12 pin of M054LAN chip by key control input pin E, being 20 pin of M054LAN chip by key control output pin D1, is 21 pin of M054LAN chip by key control output pin D2.
The utility model also proposes a kind of power amplifying device, comprises adjustable stand-by circuit, all technical schemes in diagram 1 to the figure illustrated embodiment before this adjustable stand-by circuit can comprise, and its concrete structure can not given unnecessary details at this with reference to previous embodiment.Owing to adopted the scheme of aforementioned adjustable stand-by circuit, power amplifying device of the present utility model when the audio signal of audio-frequence player device input is very little, also can make the output of power amplifier module steady operation for existing; And can regulate the reference voltage size of control benchmark adjustment module output by key-press module, regulate the control module accuracy that input is judged to the absence of audio signal, solved power amplifying device when small-signal is imported, erroneous judgement has improved user's experience for the no signal input makes power amplifying device enter the problem of standby.
The above only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (10)
1. an adjustable stand-by circuit is connected between the signal amplification module and power amplifier module of power amplifying device, it is characterized in that, comprises the Opportunity awaiting control for linear module, control module, benchmark adjustment module, comparison module and the key-press module that are connected with power amplifier module, wherein:
The first input end of described comparison module connects the signal output part of described signal amplification module, receives the audio signal of described signal amplification module output; Second input of described comparison module connects the benchmark output of described benchmark adjustment module, receives the reference voltage of described benchmark adjustment module output; The comparison output of described comparison module connects the signal controlling input of described control module, and described comparison module is used for the signal that its first input end and second input receive is compared, and the output comparison signal is to described control module;
The button control input end of described control module connects described key-press module, the button control output end of described control module connects the selection control end of described benchmark adjustment module, described control module is used for the signal input according to described key-press module, controls described benchmark adjustment module by described selection control end and exports corresponding reference voltage; The signal controlling output of described control module connects described Opportunity awaiting control for linear module, and described control module also is used for controlling the work of described Opportunity awaiting control for linear module according to the comparison signal that receives.
2. adjustable stand-by circuit according to claim 1, it is characterized in that, described benchmark adjustment module comprises the multiway analog switch chip, described multiway analog switch chip comprises a plurality of benchmark output pins for the benchmark input pin that receives different reference voltage inputs, output reference voltage and selects the control pin, described benchmark output pin connects described benchmark output, and described selection control pin connects described selection control end;
Described comparison module is the comparator chip, the positive input pin of described comparator chip connects described first input end, the reversed input pin of described comparator chip connects described second input, and the output pin of described comparator chip connects described relatively output.
3. adjustable stand-by circuit according to claim 2, it is characterized in that, described control module comprises the MCU control chip, described MCU control chip comprises the signal controlling input pin, by key control input pin, signal controlling output pin with by the key control output pin, described signal controlling input pin connects described signal controlling input, describedly connect described button control input end by the key control input pin, described signal controlling output pin connects described signal controlling output, describedly connects described button control output end by the key control output pin.
4. adjustable stand-by circuit according to claim 3, it is characterized in that, described benchmark input pin is four, and four benchmark input pins are respectively: the first benchmark input pin, the second benchmark input pin, the 3rd benchmark input pin and the 4th benchmark input pin; Described selection control pin is two, and described signal controlling output pin is two, and described is two by the key control output pin, selects control pin and two to connect one to one by the key control output pin for two.
5. adjustable stand-by circuit according to claim 4, it is characterized in that, described benchmark adjustment module also comprises first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance and the 8th resistance, described first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance connect successively, described first resistance differs from an end that is connected with described second resistance and connects power supply, and described the 5th resistance differs from an end ground connection that is connected with described the 4th resistance; Described first resistance is connected the described first benchmark input pin with the end that second resistance links to each other, described second resistance is connected the described second benchmark input pin with the end that the 3rd resistance links to each other, described the 3rd resistance is connected described the 3rd benchmark input pin with the end that the 4th resistance links to each other, and described the 4th resistance is connected described the 4th benchmark input pin with the end that the 5th resistance links to each other; Described benchmark output pin is connected with described benchmark output through described the 6th resistance; Described the 7th resistance one end connects described power supply, and the other end connects one and selects the control pin; Described the 8th resistance one end connects described power supply, and the other end connects another and selects the control pin.
6. adjustable stand-by circuit according to claim 5 is characterized in that, described key-press module comprises key switch, the 9th resistance and the tenth resistance; Described the 9th resistance one end connects described power supply, and the other end connects described by the key control input pin with through described key switch ground connection through described the tenth resistance.
7. according to each described adjustable stand-by circuit among the claim 4-6, it is characterized in that, described Opportunity awaiting control for linear module comprises the power amplifier negative power supply of submodule and the power amplifier submodule of just powering, just the powering switch control end of submodule of described power amplifier connects a signal controlling output pin, and the switch control end of the negative power supply of described power amplifier submodule connects another signal controlling output pin; Just the powering output of submodule of described power amplifier connects the positive supply input of described power amplifier module, and the output of the negative power supply of described power amplifier submodule connects the negative supply input of described power amplifier module.
8. adjustable stand-by circuit according to claim 7 is characterized in that, the described power amplifier submodule of just powering comprises a NPN type triode, the first positive-negative-positive triode, first electric capacity, second electric capacity, the 11 resistance and the 12 resistance;
The base stage of a described NPN type triode is connected through the switch control end of described the 11 resistance with the described submodule of just powering, a described NPN type transistor emitter ground connection, a described NPN type transistor collector connects the base stage of the described first positive-negative-positive triode through described the 12 resistance; The collector electrode of the described first positive-negative-positive triode connects the positive supply input of described power amplifier module, and the described first positive-negative-positive transistor emitter connects the PWR positive voltage; Described first electric capacity, one end connects described PWR positive voltage, other end ground connection; Described second electric capacity, one end connects described PWR positive voltage, other end ground connection.
9. adjustable stand-by circuit according to claim 7 is characterized in that, the negative power supply of described power amplifier submodule comprises the 2nd NPN type triode, the second positive-negative-positive triode, the 3rd electric capacity, the 4th electric capacity, the 13 resistance, the 14 resistance and the 15 resistance;
The base stage of the described second positive-negative-positive triode is connected with the switch control end of described negative power supply submodule through described the 15 resistance, the described second positive-negative-positive transistor emitter connects described power supply, and the described second positive-negative-positive transistor collector connects the base stage of described the 2nd NPN type triode through described the 3rd resistance; The emitter of described the 2nd NPN type triode is connected with its base stage through described the 14 resistance, the emitter of described the 2nd NPN type triode also is connected with the PWR negative voltage, and the collector electrode of described the 2nd NPN type triode is connected with the negative supply input of described power amplifier module; One end ground connection of described the 3rd electric capacity, the other end connects described PWR negative voltage; One end ground connection of described the 4th electric capacity, the other end connects described PWR negative voltage.
10. a power amplifying device comprises signal amplification module and power amplifier module, it is characterized in that, also comprises as each described adjustable stand-by circuit among the claim 1-9.
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| CN 201320255689 CN203225731U (en) | 2013-05-10 | 2013-05-10 | Power amplifying device and adjustable standby circuit thereof |
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| CN 201320255689 CN203225731U (en) | 2013-05-10 | 2013-05-10 | Power amplifying device and adjustable standby circuit thereof |
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| CN203225731U true CN203225731U (en) | 2013-10-02 |
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| CN 201320255689 Expired - Fee Related CN203225731U (en) | 2013-05-10 | 2013-05-10 | Power amplifying device and adjustable standby circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162370A (en) * | 2021-04-26 | 2021-07-23 | 上海飞象健康科技有限公司 | Pressure increasing and reducing control system and method of portable equipment, medium and tooth flushing device |
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2013
- 2013-05-10 CN CN 201320255689 patent/CN203225731U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162370A (en) * | 2021-04-26 | 2021-07-23 | 上海飞象健康科技有限公司 | Pressure increasing and reducing control system and method of portable equipment, medium and tooth flushing device |
| CN113162370B (en) * | 2021-04-26 | 2023-06-16 | 上海飞象健康科技有限公司 | Lifting pressure control system, lifting pressure control method, lifting pressure control medium and tooth flushing device of portable equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20210510 |
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| CF01 | Termination of patent right due to non-payment of annual fee |