CN204465669U - Be applicable to the device of loud speaker Long-distance Control - Google Patents
Be applicable to the device of loud speaker Long-distance Control Download PDFInfo
- Publication number
- CN204465669U CN204465669U CN201520188239.6U CN201520188239U CN204465669U CN 204465669 U CN204465669 U CN 204465669U CN 201520188239 U CN201520188239 U CN 201520188239U CN 204465669 U CN204465669 U CN 204465669U
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- China
- Prior art keywords
- power amplifier
- audio signal
- connecting line
- loud speaker
- relay
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- Expired - Fee Related
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Abstract
The utility model relates to the device being applicable to loud speaker Long-distance Control, and it comprises answering cell phone, power amplifier, power amplification control circuit, loud speaker and earphone connecting line; One end of earphone connecting line is connected with the audio signal output end of answering cell phone, the other end of earphone connecting line is divided into two Zhi Duantou, wherein a Zhi Duantou is connected with the audio signal input end of power amplifier, and the audio signal output end of power amplifier is connected with loudspeaker audio signal input; Power amplification control circuit comprises amplifying circuit and relay, and the input of amplifying circuit is connected with another root Zhi Duantou of earphone connecting line, and the output of amplifying circuit is connected with the coil of relay, and the contact of relay is connected in the current supply circuit of power amplifier.This apparatus structure is simple, designs ingenious, produce and installation cost low.User only needs to dial automatic call answering, can send notice or broadcast, without the need to running to studio again, and more convenient and quicker.
Description
Technical field
The utility model relates to a kind of device being applicable to loud speaker Long-distance Control.
Background technology
The area of relatively concentrating personnel at present, such as school, company etc., often need to play broadcast or notice, but all need to be undertaken by Mike in studio, this mode is inconvenient on the one hand, if meet emergency or special circumstances on the other hand, easily cause broadcast or notice not in time.
Utility model content
For the problems referred to above that prior art exists, the purpose of this utility model is to provide a kind of device being applicable to loud speaker Long-distance Control.
For achieving the above object, the utility model adopts following technical scheme: the device being applicable to loud speaker Long-distance Control, comprises answering cell phone, power amplifier, power amplification control circuit, loud speaker and earphone connecting line; One end of described earphone connecting line is connected with the audio signal output end of answering cell phone, the other end of earphone connecting line is divided into two Zhi Duantou, wherein a Zhi Duantou is connected with the audio signal input end of power amplifier, and the audio signal output end of power amplifier is connected with loudspeaker audio signal input; Described power amplification control circuit comprises amplifying circuit and relay, the input of described amplifying circuit is connected with another root Zhi Duantou of described earphone connecting line, the output of amplifying circuit is connected with the coil of relay, and the contact of relay is connected in the current supply circuit of power amplifier.
As optimization, the multistage amplifier circuit that described amplifying circuit is made up of multiple triode.
Relative to prior art, the utility model tool has the following advantages: the apparatus structure of loud speaker Long-distance Control that what the utility model provided be applicable to is simple, designs ingenious, produce and installation cost low.User only needs to dial automatic call answering, can send notice or broadcast, without the need to running to studio again, and more convenient and quicker.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device being applicable to loud speaker Long-distance Control.
In figure, answering cell phone 10, power amplifier 20, power amplification control circuit 30, amplifying circuit 31, relay 32, loud speaker 40, regular handset 50.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, be applicable to the device of loud speaker Long-distance Control, comprise answering cell phone 10, power amplifier 20, power amplification control circuit 30, loud speaker 40 and earphone connecting line.
One end of earphone connecting line is connected with the audio signal output end of answering cell phone 10, the other end of earphone connecting line is divided into two Zhi Duantou, wherein a Zhi Duantou is connected with the audio signal input end of power amplifier 20, the audio signal output end of power amplifier 20 is connected with loud speaker 40 audio signal input end, and answering cell phone 10 is set to auto-pickup of sending a telegram here.
Power amplification control circuit 30 comprises amplifying circuit 31 and relay 32, the input of amplifying circuit 31 is connected with another root Zhi Duantou of described earphone connecting line, the output of amplifying circuit 31 is connected with the coil of relay 32, and the contact of relay 32 is connected in the current supply circuit of power amplifier 20.
Described amplifying circuit 31 can adopt disclosed amplifying circuit on the market, preferably adopts the multistage amplifier circuit be made up of multiple triode, and this amplification circuit structure is simple, convenient connection, and builds with maintenance cost low.Particularly, two or three triodes can be adopted, a triode is one-level amplifying circuit, and during connection, the output of upper level amplifying circuit (i.e. upper level triode) connects the input of next stage discharge circuit (i.e. next stage triode).
The use procedure of what the utility model provided the be applicable to device of loud speaker Long-distance Control is as follows:
User dials the number of answering cell phone 10 by regular handset 50, answering cell phone 10 is owing to being provided with auto-pickup function, meeting auto-pickup, now user's speech, while this audio signal passes to power amplifier 20 by earphone connecting line, also power amplification control circuit 30 has been passed to, after this signal repeatedly amplifies by the amplifying circuit 31 in power amplification control circuit 30, (reaching more than 8 volts of voltages) makes the coil electricity of relay 32, thus (power amplifier 20 is its power supply by power supply 33 to make the current supply circuit of the contacting power amplifier 20 of relay 32, power supply 33, power amplifier 20 and relay 32 are connected and are formed the current supply circuit of power amplifier 20), power amplifier 20 works, thus user what is said or talked about namely reaches loud speaker 40 by power amplifier 20, then broadcast out.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (2)
1. be applicable to the device of loud speaker Long-distance Control, it is characterized in that: comprise answering cell phone (10), power amplifier (20), power amplification control circuit (30), loud speaker (40) and earphone connecting line;
One end of described earphone connecting line is connected with the audio signal output end of answering cell phone (10), the other end of earphone connecting line is divided into two Zhi Duantou, wherein a Zhi Duantou is connected with the audio signal input end of power amplifier (20), and the audio signal output end of power amplifier (20) is connected with loud speaker (40) audio signal input end;
Described power amplification control circuit (30) comprises amplifying circuit (31) and relay (32), the input of described amplifying circuit (31) is connected with another root Zhi Duantou of described earphone connecting line, the output of amplifying circuit (31) is connected with the coil of relay (32), and the contact of relay (32) is connected in the current supply circuit of power amplifier (20).
2. be applicable to the device of loud speaker Long-distance Control as claimed in claim 1, it is characterized in that: the multistage amplifier circuit that described amplifying circuit (31) is made up of multiple triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188239.6U CN204465669U (en) | 2015-03-24 | 2015-03-24 | Be applicable to the device of loud speaker Long-distance Control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188239.6U CN204465669U (en) | 2015-03-24 | 2015-03-24 | Be applicable to the device of loud speaker Long-distance Control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204465669U true CN204465669U (en) | 2015-07-08 |
Family
ID=53672489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520188239.6U Expired - Fee Related CN204465669U (en) | 2015-03-24 | 2015-03-24 | Be applicable to the device of loud speaker Long-distance Control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204465669U (en) |
-
2015
- 2015-03-24 CN CN201520188239.6U patent/CN204465669U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20170324 |