CN105554671A - Hearing-aid - Google Patents
Hearing-aid Download PDFInfo
- Publication number
- CN105554671A CN105554671A CN201511002324.XA CN201511002324A CN105554671A CN 105554671 A CN105554671 A CN 105554671A CN 201511002324 A CN201511002324 A CN 201511002324A CN 105554671 A CN105554671 A CN 105554671A
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- Prior art keywords
- terminal
- resistor
- former limit
- winding
- input
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
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- 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)
- Amplifiers (AREA)
Abstract
The invention provides a hearing-aid, which comprises a microphone, a first capacitor and a second capacitor, wherein the anode end of the microphone is connected to a first resistor and the cathode end of the microphone is connected to the cathode of a power supply; the first resistor is connected to an earphone jack, and the earphone jack is connected to the anode of the power supply; the first capacitor is connected to the common port 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 (Complementary Metal Oxide Semiconductor) amplifier, and the output end of the COMS amplifier is connected to the sliding end of the adjustable 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 a base electrode of a PNP transistor, a collector of the PNP transistor is connected to the anode of the power supply, and an emitter of the PNP transistor is connected to the cathode of the power supply and is connected to the base electrode thereof 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.
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.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002324.XA CN105554671A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002324.XA CN105554671A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105554671A true CN105554671A (en) | 2016-05-04 |
Family
ID=55833563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002324.XA Pending CN105554671A (en) | 2015-12-25 | 2015-12-25 | Hearing-aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105554671A (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 CN201511002324.XA patent/CN105554671A/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 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |
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| WD01 | Invention patent application deemed withdrawn after publication |