CN2657302Y - Volume amplifier for telephone receiver - Google Patents
Volume amplifier for telephone receiverInfo
- Publication number
- CN2657302Y CN2657302Y CN 200320117877 CN200320117877U CN2657302Y CN 2657302 Y CN2657302 Y CN 2657302Y CN 200320117877 CN200320117877 CN 200320117877 CN 200320117877 U CN200320117877 U CN 200320117877U CN 2657302 Y CN2657302 Y CN 2657302Y
- Authority
- CN
- China
- Prior art keywords
- shell
- volume
- telephone receiver
- amplifier
- signal
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
The utility model relates to a portable volume amplifier of telephone handset with a simple structure which can amplify volumes of the telephone handset and is easy to use. The volume amplifier comprises a housing and an audio amplifier circuit board which is characterized in that the audio amplifier circuit board is provided in the housing, and the housing is provided with a volume adjusting key, a plug connector for signal input and a socket for signal output.
Description
Technical field
The utility model relates to a kind of volume amplifier, particularly a kind of telephone receiver volume amplifier.
Background technology
Existing telephone set comprises shell; receiver; hand-free loudspeaker; button; the phone wiring board; display screen; generally speaking in order to protect individual privacy; domestic consumer can be by receiver and the other side's conversation; its problem is personage hard of hearing because hearing former thereby can not use common receiver; can only enlarge by hand-free loudspeaker or external loudspeaker and answer volume; the shortcoming of this mode is to reveal individual privacy easily; and existing sound volume concerning personage hard of hearing is arranged of sending by telephone set adjusting volume is still big inadequately; be not suitable for all personages hard of hearing and use, also be not suitable for using in the noisy environment.
Summary of the invention
The purpose of this utility model is in order to solve the problem that being not suitable for of existing in existing telephone machine personage hard of hearing uses, and provide a kind of and be easy to carry, the telephone receiver volume can be enlarged, telephone receiver volume amplifier simple in structure, easy to use.
Technical scheme:
The purpose of this utility model is achieved in that a kind of telephone receiver volume amplifier, comprises shell, audio amplifier circuit plate, it is characterized in that the audio amplifier circuit plate places in the shell; Be respectively equipped with volume on the shell and regulate button, input plug signal and signal accessory power outlet.
Described telephone receiver volume amplifier is characterized in that the lid that is provided with battery case in the shell and matches with this battery case.
Described telephone receiver volume amplifier is characterized in that shell is provided with the external charge socket.
Described telephone receiver volume amplifier is characterized in that the front of shell is provided with electric quantity of power supply indicator light and charging indicator light.
During use, will have the phone phone plug now and extract, the input plug signal on the telephone receiver volume amplifier will be inserted on the telephone socket, again phone plug be inserted on the signal accessory power outlet of telephone receiver volume amplifier from telephone socket; The audio signal of phone is sent into through input plug signal and is delivered to the signal accessory power outlet after the audio amplifier circuit plate amplifies, deliver to the earphone of receiver again, its volume is regulated button by volume and is regulated, and the microphone signal on the receiver is directly delivered to phone through the telephone receiver volume amplifier, and its process is not treated.The electric weight indicator light pilot cell electric weight of telephone receiver volume amplifier is crossed when low when electric weight, and the telephone receiver volume amplifier automatically switches to common operating state, and prompting user charging is till electric weight recovers.
Beneficial effect:
Owing to adopted technical scheme described in the utility model, telephone receiver volume amplifier of the present utility model is owing to adopt independent amplifying circuit, power supply independently is provided, telephone wire is input to the independent of receiver signal to be amplified, volume can be improved greatly, the user can be regulated as required for set volume by-pass cock simultaneously, the power supply that is provided with can be with dry cell or external charge power supply, and electric quantity of power supply indicator light display power supply electric weight situation, make the user know power status, charging in time or replacing battery, because this kind volume amplifier all has telephone line interface, can insert on the common telephone set, be easy to carry, easy to use, simple in structure, this kind telephone receiver volume amplifier can be regulated because of volume, and is not only very suitable concerning personage hard of hearing is arranged, and make common normal personage also be fit to use, also be applicable in the noisy environment.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the external view of an embodiment of telephone receiver volume amplifier described in the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the circuit theory diagrams of Fig. 1 embodiment.
Among the figure 1, the electric weight indicator light, 2, shell, 3, charging indicator light, 4, volume is regulated button, 5, input plug signal, 6, charging plug, 7, charging socket, 8, the signal accessory power outlet, 9, phone plug, 10, the audio amplifier circuit plate, 11, lid, 12, battery case, 21, the signal accessory power outlet, 22, input plug signal, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, resistance, C1, C2, C3, C4, C5, C6, C8, electric capacity, Q1, Q2, triode, D1, diode, N, relay, KS1, the interlock contact switches, IC1, model is the integrated package of KA2209, RW1, potentiometer, SW1, switch, DMC, 6.5 volt direct-flow external power source socket, I, 4.8V/100mA rechargeable battery, DW1, the 2V voltage stabilizing didoe, DW2, the 1V voltage stabilizing didoe, LED1, LED2, LED3, LED4, light-emitting diode.
Embodiment:
Fig. 1 is the external view of an embodiment of telephone receiver volume amplifier described in the utility model.As seen, described telephone receiver volume amplifier comprises shell 2, audio amplifier circuit plate 10 from Fig. 1 and Fig. 2, and audio amplifier circuit plate 10 places in the shell 2; Be respectively equipped with volume on the shell 2 and regulate button 4, input plug signal 5 and signal accessory power outlet 8; The lid 11 that is provided with battery case 12 in the shell 2 and matches with it; Also be provided with external charge socket 7 on the shell; The front of shell 2 is provided with electric quantity of power supply indicator light 1 and charging indicator light 3.
A partly is the signal accessory power outlet among Fig. 3, and B partly is a power amplification circuit, and C partly is a volume control circuit, D partly is power charging circuit and switching circuit, E partly is the electric weight indicating circuit, and F partly is relay and control circuit thereof, and G partly is an input plug signal; Wherein between input plug signal 22 and the signal accessory power outlet 21 in straight-through two circuits and the receiver microphone join, the signal of microphone input phone is not treated, and be provided with interlock contact switches KS1 in addition two circuits between input plug signal 22 and the signal accessory power outlet 21 by relay N control, when battery electric quantity is crossed when low, the power supply of IC1 block system relay N also leads directly to (state of interlock contact switches KS1 as shown in Figure 3) two circuits in addition between input plug signal 22 and the signal accessory power outlet 21, and receiver is as using at ordinary times; If battery electric quantity is normal, then IC1 control relay N action with shifting another group contact on the interlock contact switches KS1 onto, is delivered to signal accessory power outlet 21 through the audio signal that input plug signal 22 enters again after IC1 amplifies, realize the volume amplification.
Claims (5)
1, a kind of telephone receiver volume amplifier comprises shell, audio amplifier circuit plate, it is characterized in that the audio amplifier circuit plate places in the shell; Be respectively equipped with volume on the shell and regulate button, input plug signal and signal accessory power outlet.
2, according to the described telephone receiver volume amplifier of claim 1, it is characterized in that the lid that is provided with battery case in the shell and matches with this battery case.
3, according to claim 1 or 2 described telephone receiver volume amplifiers, it is characterized in that shell is provided with the external charge socket.
4, according to claim 1 or 2 described telephone receiver volume amplifiers, it is characterized in that the front of shell is provided with electric quantity of power supply indicator light and charging indicator light.
5,, it is characterized in that the front of shell is provided with electric quantity of power supply indicator light and charging indicator light according to the described telephone receiver volume amplifier of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117877 CN2657302Y (en) | 2003-11-10 | 2003-11-10 | Volume amplifier for telephone receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320117877 CN2657302Y (en) | 2003-11-10 | 2003-11-10 | Volume amplifier for telephone receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657302Y true CN2657302Y (en) | 2004-11-17 |
Family
ID=34347004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320117877 Expired - Fee Related CN2657302Y (en) | 2003-11-10 | 2003-11-10 | Volume amplifier for telephone receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657302Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822110A (en) * | 2015-04-20 | 2015-08-05 | 青岛歌尔声学科技有限公司 | Multi-audio-channel switching control circuit and audio equipment |
-
2003
- 2003-11-10 CN CN 200320117877 patent/CN2657302Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822110A (en) * | 2015-04-20 | 2015-08-05 | 青岛歌尔声学科技有限公司 | Multi-audio-channel switching control circuit and audio equipment |
| CN104822110B (en) * | 2015-04-20 | 2018-09-04 | 青岛歌尔声学科技有限公司 | A kind of Multi-audio-frequency channel control switching circuit and audio frequency apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |