CN105554670A - Hearing aid - Google Patents
Hearing aid Download PDFInfo
- Publication number
- CN105554670A CN105554670A CN201510997967.6A CN201510997967A CN105554670A CN 105554670 A CN105554670 A CN 105554670A CN 201510997967 A CN201510997967 A CN 201510997967A CN 105554670 A CN105554670 A CN 105554670A
- Authority
- CN
- China
- Prior art keywords
- terminal
- input
- resistor
- former limit
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/77—Design aspects, e.g. CAD, of hearing aid tips, moulds or housings
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electronic Switches (AREA)
Abstract
The invention provides a hearing aid. The hearing aid comprises a microphone, a first capacitor and a second capacitor, wherein the positive end of the microphone is connected to a first resistor; the negative end of the microphone is connected to the cathode of a power supply; the first resistor is connected to an earphone jack; the earphone jack is connected to the anode of the power supply; the first capacitor is connected to the common end of the microphone and the first resistor; the second end of the first capacitor is connected to a second resistor; the second resistor is connected to the first end of an adjustable resistor; the second end of the adjustable resistor is connected to the input end of a COMS amplifier; the output end of the COMS amplifier is connected to the sliding end of the adjustable resistor through a third resistor; the first end of the second capacitor is connected to the output end of the COMS amplifier; the second end of the second capacitor is connected to the base of a PNP transistor; the collector of the PNP transistor is connected to the anode of the power supply; and the emitter of the PNP transistor is connected to the cathode of the power supply and connected to the base of the power supply through a fourth resistor.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of hearing aids.
Background technology
Existing hearing aids price is high, and volume is large, and power consumption, and the elderly needs the used time to open switch ability hearing aid, very inconvenient.
The volume of hearing aids is large, mainly determined by power supply, the electric energy conversion efficiency of power supply is low, must be made up by battery capacity, how to improve the electric energy conversion efficiency of power supply, reduce battery volume, and then reduce the overall volume of hearing aids, what strengthen user wears experience, is current problem demanding prompt solution.
Summary of the invention
The present invention proposes a kind of hearing aids, solves existing hearing aids price high, and volume is large, and the problem of power consumption.
Technical scheme of the present invention is achieved in that
A kind of hearing aids, comprising: microphone, its positive terminal is connected to the first end of the first resistor, and its negative pole end is connected to the negative pole of power supply; Second end of described first resistor is connected to the first end of receiver J-Horner, and the second end of earphone jack is connected to the positive pole of described power supply; First capacitor, its first end is connected to the common port of described microphone and the first resistor, its the second end is connected to the first end of the second resistor, second end of the second resistor is connected to the first end of adjustable resistor, second end of adjustable resistor is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of described adjustable resistor by the 3rd resistor, wherein, COMS amplifier comprises three not gates be connected in series; Second capacitor, its first end is connected to the output of described COMS amplifier, its the second end is connected to the base stage of PNP transistor, the collector electrode of PNP transistor is connected to the positive pole of described power supply, and the emitter of PNP transistor is connected to the negative pole of described power supply and is connected to its base stage by the 4th resistor;
Described power supply comprises:
Input port, receives input voltage;
Output port, provides output voltage;
Transformer, comprise former limit winding, vice-side winding and auxiliary winding, its limit, Central Plains winding, vice-side winding and auxiliary winding respectively have the first terminal and the second terminal, the first terminal of former limit winding is coupled to input port and receives input voltage, second terminal of vice-side winding connects secondary side reference ground, and the first terminal of auxiliary winding connects former limit with reference to ground;
Former limit power switch, is coupled between the second terminal of former limit winding and reference ground, former limit;
Secondary side diode, is coupled between the first terminal of vice-side winding and output port;
Output capacitance, is coupled between output port and secondary side reference ground;
Former limit comparator, have first input end, the second input terminal and lead-out terminal, its first input end is coupled to former limit power switch, to receive the electric current characterizing and flow through former limit power switch, its second input terminal receives the first reference signal, and its lead-out terminal exports reset signal;
Zero-crossing detector, the second terminal reception being coupled to auxiliary winding assists the voltage at winding two ends, and provides asserts signal based on the voltage at auxiliary winding two ends;
Logical circuit, there is first input end, the second input terminal and lead-out terminal, the lead-out terminal that its first input end is coupled to former limit comparator receives reset signal, and the second input terminal is coupled to zero-crossing detector and receives asserts signal, and its lead-out terminal provides control signal;
Drive circuit, is coupled to the lead-out terminal reception control signal of logical circuit, and provides drive singal based on control signal, to control the break-make of former limit power switch;
Described former limit power switch comprises mos field effect transistor;
Described logical circuit comprises rest-set flip-flop, and described rest-set flip-flop has set end, reset terminal and output, wherein
Reset terminal is as first input end of logical circuit;
Set end is as the second input terminal of logical circuit;
Output is as the lead-out terminal of logical circuit;
Described zero-crossing detector comprises zero-crossing comparator, described zero-crossing comparator has in-phase input end, inverting input and output, the second terminal reception that its inverting input is coupled to auxiliary winding assists the voltage at winding two ends, its in-phase input end receives the second reference signal, and its lead-out terminal exports asserts signal;
Described second reference signal is 0.1V.
The invention has the beneficial effects as follows: hearing aid design is simple and reliable, easy to use, reduce machine volume.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of a kind of hearing aids of the present invention;
Fig. 2 is the circuit diagram of power supply of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of hearing aids of the present invention, comprising: microphone 10, and its positive terminal is connected to the first end of the first resistor 21, and its negative pole end is connected to the negative pole of power supply 60; Second end of the first resistor 21 is connected to the first end of receiver J-Horner 50, and the second end of earphone jack 50 is connected to the positive pole of power supply 60; First capacitor 31, its first end is connected to the common port of microphone 10 and the first resistor 21, its second end is connected to the first end of the second resistor 22, second end of the second resistor 22 is connected to the first end of adjustable resistor 25, second end of adjustable resistor 25 is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of adjustable resistor 25 by the 3rd resistor 23, wherein, COMS amplifier comprises three not gates be connected in series 71, not gate 72 and not gate 73; Second capacitor 32, its first end is connected to the output of COMS amplifier, its the second end is connected to the base stage of PNP transistor 40, the collector electrode of PNP transistor 40 is connected to the positive pole of power supply 60, and the emitter of PNP transistor 40 is connected to the negative pole of power supply 60 and is connected to its base stage by the 4th resistor 24.
Fig. 2 is the electrical block diagram of power supply 100 according to an embodiment of the invention.As shown in Figure 2, power supply 100 of the present invention comprises: input port 101, receives input voltage vin; Output port 102, provides output voltage Vo; Transformer, comprise former limit winding 103-1, vice-side winding 103-2 and auxiliary winding 103-3, its limit, Central Plains winding 103-1, vice-side winding 103-2 and auxiliary winding 103-3 respectively have the first terminal and the second terminal, the first terminal of former limit winding 103-1 is coupled to input port 101 and receives input voltage vin, second terminal of vice-side winding 103-2 connects secondary side reference ground, and the first terminal of auxiliary winding 103-3 connects former limit with reference to ground; Former limit power switch 105, is coupled between second terminal of former limit winding 103-1 and reference ground, former limit; Secondary side diode 106, is coupled between the first terminal of vice-side winding 103-2 and output port 102; Output capacitance 107, is coupled between output port 102 and secondary side reference ground; Former limit comparator 108, there is first input end, the second input terminal and lead-out terminal, its first input end is coupled to former limit power switch 105, to receive the electric current I sen characterizing and flow through former limit power switch 105, its second input terminal receives the first reference signal Vref1, and its lead-out terminal exports reset signal; Zero-crossing detector 104, the second terminal reception being coupled to auxiliary winding 103-3 assists the voltage at winding 103-3 two ends, and provides asserts signal based on the voltage at auxiliary winding 103-3 two ends; Logical circuit 109, there is first input end, the second input terminal and lead-out terminal, the lead-out terminal that its first input end is coupled to former limit comparator 108 receives reset signal, and the second input terminal is coupled to zero-crossing detector 104 and receives asserts signal, and its lead-out terminal provides control signal; Drive circuit 110, is coupled to the lead-out terminal reception control signal of logical circuit 109, and provides drive singal based on control signal, to control the break-make of former limit power switch 105.
Preferably, described former limit power switch comprises mos field effect transistor (MOSFET).
Preferably, described logical circuit 109 comprises rest-set flip-flop, described rest-set flip-flop has set end S, reset terminal R and output Q, wherein reset terminal R is as first input end of logical circuit 109, set end S is as the second input terminal of logical circuit 109, and output Q is as the lead-out terminal of logical circuit 109.
Preferably, described zero-crossing detector 104 comprises zero-crossing comparator, described zero-crossing comparator has in-phase input end, inverting input and output, the second terminal reception that its inverting input is coupled to auxiliary winding 103-3 assists the voltage at winding 103-3 two ends, its in-phase input end receives the second reference signal Vref2, and its lead-out terminal exports asserts signal.
Preferably, described second reference signal Vref2 is 0.1V.
In one embodiment, described power supply 100 also comprises: contact resistance 113, is coupled between the secondary part 114-2 of coupled apparatus and the common connecting point of secondary side diode 106 and secondary sampler resistance 109.
When power supply 100 normally runs, when former limit power switch 105 is switched on, input voltage vin via former limit winding 103-1 and former limit power switch 105 to former limit with reference to ground.Former limit winding 103-1 starts stored energy, and the electric current simultaneously flowing through former limit power switch 105 starts to increase.When its increase to be greater than the first reference signal Vref1 time, former limit comparator 108 export reset signal become high level.Accordingly, logical circuit 109 is reset, and the control signal that logical circuit 109 is exported becomes low level.Former limit power switch 105 disconnects via after drive circuit 110 by this low level logical signal.
After former limit power switch 105 is disconnected, secondary side diode 106 starts afterflow, and energy is transferred into output port 102 via vice-side winding 103-2, secondary side diode 106.The electric current flowing through secondary side diode 106 starts to reduce.When it drops to zero, the magnetizing inductance of former limit winding 103-1 and the parasitic capacitance (not shown) of former limit power switch 105 produce vibration.This vibration first time zero passage, when namely auxiliary winding 103-3 both end voltage first time is zero, zero-crossing detector 104 detects this zero passage phenomenon.Accordingly, asserts signal becomes high level.The control signal set high level that logical circuit 109 exports by the asserts signal of this high level, thus via after drive circuit 110 by power switch 105 conducting of former limit.Power supply enters a new switch periods.
By the co-ordination of former limit comparator 108, auxiliary winding 103-3, zero-crossing detector 104, logical circuit 109 and drive circuit 110, power supply 100 of the present invention can easily realize controlling the break-make of former limit power switch 105 without the need to oscillator, thus input voltage vin is converted into required output voltage Vo.
Transistor is connected into emitter follower form, amplifies the AC signal that cmos amplifier is exported by the second capacitor-coupled, and promote common headphones, wherein, the 4th resistor is biasing resistor.Complete machine adopts earphone jack to double as mains switch, and when headset plug inserts, power supply is connected, and when plug is extracted, power supply cuts off automatically, simplifies circuit structure, reduces machine volume.
Hearing aid design of the present invention is simple and reliable, easy to use, reduces machine volume.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a hearing aids, is characterized in that, comprising:
Microphone, its positive terminal is connected to the first end of the first resistor, and its negative pole end is connected to the negative pole of power supply; Second end of described first resistor is connected to the first end of receiver J-Horner, and the second end of earphone jack is connected to the positive pole of described power supply;
First capacitor, its first end is connected to the common port of described microphone and the first resistor, its the second end is connected to the first end of the second resistor, second end of the second resistor is connected to the first end of adjustable resistor, second end of adjustable resistor is connected to the input of COMS amplifier, the output of COMS amplifier is connected to the sliding end of described adjustable resistor by the 3rd resistor, wherein, COMS amplifier comprises three not gates be connected in series;
Second capacitor, its first end is connected to the output of described COMS amplifier, its the second end is connected to the base stage of PNP transistor, the collector electrode of PNP transistor is connected to the positive pole of described power supply, and the emitter of PNP transistor is connected to the negative pole of described power supply and is connected to its base stage by the 4th resistor
Described power supply comprises:
Input port, receives input voltage;
Output port, provides output voltage;
Transformer, comprise former limit winding, vice-side winding and auxiliary winding, its limit, Central Plains winding, vice-side winding and auxiliary winding respectively have the first terminal and the second terminal, the first terminal of former limit winding is coupled to input port and receives input voltage, second terminal of vice-side winding connects secondary side reference ground, and the first terminal of auxiliary winding connects former limit with reference to ground;
Former limit power switch, is coupled between the second terminal of former limit winding and reference ground, former limit;
Secondary side diode, is coupled between the first terminal of vice-side winding and output port;
Output capacitance, is coupled between output port and secondary side reference ground;
Former limit comparator, have first input end, the second input terminal and lead-out terminal, its first input end is coupled to former limit power switch, to receive the electric current characterizing and flow through former limit power switch, its second input terminal receives the first reference signal, and its lead-out terminal exports reset signal;
Zero-crossing detector, the second terminal reception being coupled to auxiliary winding assists the voltage at winding two ends, and provides asserts signal based on the voltage at auxiliary winding two ends;
Logical circuit, there is first input end, the second input terminal and lead-out terminal, the lead-out terminal that its first input end is coupled to former limit comparator receives reset signal, and the second input terminal is coupled to zero-crossing detector and receives asserts signal, and its lead-out terminal provides control signal;
Drive circuit, is coupled to the lead-out terminal reception control signal of logical circuit, and provides drive singal based on control signal, to control the break-make of former limit power switch;
Described former limit power switch comprises mos field effect transistor;
Described logical circuit comprises rest-set flip-flop, and described rest-set flip-flop has set end, reset terminal and output, wherein
Reset terminal is as first input end of logical circuit;
Set end is as the second input terminal of logical circuit;
Output is as the lead-out terminal of logical circuit;
Described zero-crossing detector comprises zero-crossing comparator, described zero-crossing comparator has in-phase input end, inverting input and output, the second terminal reception that its inverting input is coupled to auxiliary winding assists the voltage at winding two ends, its in-phase input end receives the second reference signal, and its lead-out terminal exports asserts signal;
Described second reference signal is 0.1V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997967.6A CN105554670A (en) | 2015-12-25 | 2015-12-25 | Hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997967.6A CN105554670A (en) | 2015-12-25 | 2015-12-25 | Hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105554670A true CN105554670A (en) | 2016-05-04 |
Family
ID=55833562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510997967.6A Pending CN105554670A (en) | 2015-12-25 | 2015-12-25 | Hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105554670A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781240A (en) * | 2004-02-26 | 2006-05-31 | 半导体元件工业有限责任公司 | Power supply controller and structure |
| CN102916595A (en) * | 2012-10-25 | 2013-02-06 | 深圳市明微电子股份有限公司 | Switching power supply and multi-threshold switching circuit thereof |
| CN203340285U (en) * | 2013-06-21 | 2013-12-11 | 青岛滨海学院 | Electronic hearing aid |
| CN203352442U (en) * | 2013-07-02 | 2013-12-18 | 西南交通大学 | Fixed-frequency constant on-off time controlling apparatus of dynamic adjusting switch converter |
-
2015
- 2015-12-25 CN CN201510997967.6A patent/CN105554670A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781240A (en) * | 2004-02-26 | 2006-05-31 | 半导体元件工业有限责任公司 | Power supply controller and structure |
| CN102916595A (en) * | 2012-10-25 | 2013-02-06 | 深圳市明微电子股份有限公司 | Switching power supply and multi-threshold switching circuit thereof |
| CN203340285U (en) * | 2013-06-21 | 2013-12-11 | 青岛滨海学院 | Electronic hearing aid |
| CN203352442U (en) * | 2013-07-02 | 2013-12-18 | 西南交通大学 | Fixed-frequency constant on-off time controlling apparatus of dynamic adjusting switch converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203340285U (en) | Electronic hearing aid | |
| CN103051192A (en) | Flyback switching circuit controlled in double-peak current mode | |
| CN103607016A (en) | Non-polarity automatic judgment charging circuit and charger | |
| CN205610297U (en) | Energy -conservation automatic control circuit that charges | |
| CN203278349U (en) | Wirelessly-changeable Bluetooth headset, wirelessly-changeable Bluetooth sound box and wirelessly-changeable electronic apparatus | |
| CN103051191A (en) | Flyback type switching circuit with auxiliary winding | |
| CN205544520U (en) | Automatic energy -conserving charging circuit of pressure regulating | |
| CN105554670A (en) | Hearing aid | |
| CN105554668A (en) | Hearing impairment assist device | |
| CN105554672A (en) | Electronic hearing aid device for the old aged | |
| CN105491497A (en) | Hearing-aid instrument for hearing impairment | |
| CN105472521A (en) | Ear barrier electronic auxiliary device | |
| CN209184279U (en) | A kind of USB-PD and USBA mouthfuls of universal circuits | |
| CN105554671A (en) | Hearing-aid | |
| CN105635923A (en) | Electronic hearing aid | |
| CN204559106U (en) | A kind of convertible frequency air-conditioner and electrolytic capacitor overvoltage crowbar thereof | |
| CN105491500A (en) | Hearing impairment electronic auxiliary device | |
| CN105472518A (en) | Hearing aid device | |
| CN105472517A (en) | Hearing-aid device | |
| CN105554667A (en) | Portable hearing aid | |
| CN105554666A (en) | Hearing aid for old people | |
| CN105407441A (en) | Hearing aid device | |
| CN105554665A (en) | Hearing assist instrument | |
| CN105554669A (en) | Electronic hearing aid | |
| CN105491484A (en) | Hearing assistance device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |