CN203504753U - Simple hearing aid - Google Patents
Simple hearing aid Download PDFInfo
- Publication number
- CN203504753U CN203504753U CN201320649182.6U CN201320649182U CN203504753U CN 203504753 U CN203504753 U CN 203504753U CN 201320649182 U CN201320649182 U CN 201320649182U CN 203504753 U CN203504753 U CN 203504753U
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- triode
- resistance
- electric capacity
- capacitor
- hearing aid
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Abstract
The utility model discloses a simple hearing aid comprising a pickup, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a slide rheostat, a first triode, a second triode, a third triode, an earphone, and a power supply. The second capacitor is a polar capacitor. The simple hearing aid is advantageous in that by adopting the simple circuit structure and less electronic elements, the production costs can be reduced to the greatest extent, but the hearing aid effect is obvious; the output sound is clear and soft, and no static noise is generated; the simple hearing aid is portable and smart, the operation is simple, and the cost performance is high, and in addition, the popularization and the execution can be facilitated.
Description
Technical field
The utility model relates to a kind of healthy subsidiary products, relates in particular to a kind of simple and easy hearing aids.
Background technology
When people steps into old age, a lot of old man's hearing can decline, had a strong impact on the old men's usual interchange, in life, also exist many friends that suffer from dysaudia simultaneously, they can not exchange with people normally, some children just suffer from dysaudia from birth and suffer from, and dysaudia affects their future.The people that suffer from dysaudia generally use hearing aids to help them and exchange with people; general hearing aids is divided into two kinds, and a kind of is digital deaf-aid, and a kind of is simulation hearing aids; existing digital deaf-aid price general charged is more expensive; but its compensation to sound is meticulousr, and sound is softer, beneficial to hearing protection; and general simulation hearing aids; its low price but tonequality is fixed and sound intensity is large, can produce static noise, and long periods of wear is easily damaged patient's hearing.
Utility model content
The purpose of this utility model provides a kind of simple and easy hearing aids with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises pick-up, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, slide rheostat, the first triode, the second triode, the 3rd triode, earphone and power supply, described the second electric capacity is for there being polar capacitor, the first end of described pick-up simultaneously with the negative pole of described the second electric capacity, the emitter of described the first triode, the emitter of described the second triode, described the 3rd emitter of triode and the negative pole of described power supply are connected, the second end of described pick-up is connected with the first end of described the first resistance with the first end of described the first electric capacity simultaneously, the second end of described the first electric capacity is connected with the first end of described the second resistance with the base stage of described the first triode simultaneously, the second end while of described the first resistance and the positive pole of described the second electric capacity, the second end of described slide rheostat is connected with the first end of described the 3rd resistance, the second end of described the second resistance is connected with the collector electrode of described the first triode with the first end of described slide rheostat simultaneously, the glissile segment of described slide rheostat is connected with the first end of described the 3rd electric capacity, the second end of described the 3rd electric capacity is connected with the first end of described the 4th resistance with the base stage of described the second triode simultaneously, the second end while of described the 4th resistance and the collector electrode of described the second triode, the base stage of described the 3rd triode is connected with the first end of described the 5th resistance, the second end while of described the 5th resistance and the second end of described the 3rd resistance, the second end of described earphone and the positive pole of described power supply are connected, and the first end of described earphone is connected with the collector electrode of described the 3rd triode.
Particularly, described the first triode and described the second triode are the silicon NPN transistor of model S9014, and described the 3rd triode is the silicon NPN transistor of model S8050.
The beneficial effects of the utility model are:
The utlity model has small and exquisite, easy to carry, simple operation and other advantages, although in the fine and smooth degree of sound less than digital deaf-aid, but clear sound is soft, the size of adjustable sound, can not produce static noise, electronic devices and components are few, circuit structure is simple, with low cost, but effect has surpassed common simulation hearing aids, cost performance is high, is conducive to promote.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises pick-up BM, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, slide rheostat RP, the first triode VT1, the second triode VT2, the 3rd triode VT3, earphone HP and power supply E, the second capacitor C 2 is for there being polar capacitor, the first end of pick-up BM simultaneously with the negative pole of the second capacitor C 2, the emitter of the first triode VT1, the emitter of the second triode VT2, the emitter of the 3rd triode VT3 is connected with the negative pole of power supply E, the second end of pick-up BM is connected with the first end of the first resistance R 1 with the first end of the first capacitor C 1 simultaneously, the second end of the first capacitor C 1 is connected with the first end of the second resistance R 2 with the base stage of the first triode VT1 simultaneously, the second end while of the first resistance R 1 and the positive pole of the second capacitor C 2, the second end of slide rheostat RP is connected with the first end of the 3rd resistance R 3, the second end of the second resistance R 2 is connected with the collector electrode of the first triode VT1 with the first end of slide rheostat RP simultaneously, the glissile segment of slide rheostat RP is connected with the first end of the 3rd capacitor C 3, the second end of the 3rd capacitor C 3 is connected with the first end of the 4th resistance R 4 with the base stage of the second triode VT2 simultaneously, the second end while of the 4th resistance R 4 and the collector electrode of the second triode VT2, the base stage of the 3rd triode VT3 is connected with the first end of the 5th resistance R 5, the second end while of the 5th resistance R 5 and the second end of the 3rd resistance R 3, the second end of earphone HP is connected with the positive pole of power supply E, and the first end of earphone HP is connected with the collector electrode of the 3rd triode VT3, power supply E selects battery No. seven, and the first triode VT1 and the second triode VT2 are the silicon NPN transistor of model S9014, and the 3rd triode VT3 is the silicon NPN transistor of model S8050.
As shown in Figure 1: sound is transformed into the signal of telecommunication by pick-up BM, through the first capacitor C 1 filtering, importing the first triode VT1 into amplifies, add the second resistance R 2 as negative feedback stabilization signal, wherein slide rheostat RP is used for regulating sound size, last signal is exported by earphone HP after the 3rd triode VT3, restores voice signal.
Claims (2)
1. a simple and easy hearing aids, is characterized in that: comprise pick-up, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, slide rheostat, the first triode, the second triode, the 3rd triode, earphone and power supply, described the second electric capacity is for there being polar capacitor, the first end of described pick-up simultaneously with the negative pole of described the second electric capacity, the emitter of described the first triode, the emitter of described the second triode, described the 3rd emitter of triode and the negative pole of described power supply are connected, the second end of described pick-up is connected with the first end of described the first resistance with the first end of described the first electric capacity simultaneously, the second end of described the first electric capacity is connected with the first end of described the second resistance with the base stage of described the first triode simultaneously, the second end while of described the first resistance and the positive pole of described the second electric capacity, the second end of described slide rheostat is connected with the first end of described the 3rd resistance, the second end of described the second resistance is connected with the collector electrode of described the first triode with the first end of described slide rheostat simultaneously, the glissile segment of described slide rheostat is connected with the first end of described the 3rd electric capacity, the second end of described the 3rd electric capacity is connected with the first end of described the 4th resistance with the base stage of described the second triode simultaneously, the second end while of described the 4th resistance and the collector electrode of described the second triode, the base stage of described the 3rd triode is connected with the first end of described the 5th resistance, the second end while of described the 5th resistance and the second end of described the 3rd resistance, the second end of described earphone and the positive pole of described power supply are connected, and the first end of described earphone is connected with the collector electrode of described the 3rd triode.
2. a kind of simple and easy hearing aids according to claim 1, is characterized in that: described the first triode and described the second triode are the silicon NPN transistor of model S9014, and described the 3rd triode is the silicon NPN transistor of model S8050.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649182.6U CN203504753U (en) | 2013-10-21 | 2013-10-21 | Simple hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649182.6U CN203504753U (en) | 2013-10-21 | 2013-10-21 | Simple hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203504753U true CN203504753U (en) | 2014-03-26 |
Family
ID=50335690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320649182.6U Expired - Fee Related CN203504753U (en) | 2013-10-21 | 2013-10-21 | Simple hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203504753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980847A (en) * | 2015-06-30 | 2015-10-14 | 傅明尧 | Earphone circuit assembled by discrete components |
-
2013
- 2013-10-21 CN CN201320649182.6U patent/CN203504753U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980847A (en) * | 2015-06-30 | 2015-10-14 | 傅明尧 | Earphone circuit assembled by discrete components |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |