CN2686267Y - Radio microphone language learning machine - Google Patents
Radio microphone language learning machine Download PDFInfo
- Publication number
- CN2686267Y CN2686267Y CN 200420015118 CN200420015118U CN2686267Y CN 2686267 Y CN2686267 Y CN 2686267Y CN 200420015118 CN200420015118 CN 200420015118 CN 200420015118 U CN200420015118 U CN 200420015118U CN 2686267 Y CN2686267 Y CN 2686267Y
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- CN
- China
- Prior art keywords
- circuit
- low
- language machine
- amplifies
- frequency
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- 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
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Abstract
The utility model discloses a radio sound amplifying language learning machine. The past sound amplifying device for classrooms is composed of an independent wireless microphone, a loud-speaker and a sound box, having large wasting assets, inconvenient use and poor sharing, and the general school can not bear. The utility model comprises a sound amplifying language learning machine shell, which is characterized in that a receiving antenna is arranged on the sound amplifying language learning machine shell or is embedded in the sound amplifying language learning machine shell. The sound amplifying language learning machine shell is provided with a power supply circuit, a high-frequency radio receiving circuit, a low-frequency amplification circuit, a volume control circuit, an audio frequency power amplification circuit and a horn, and the receiving antenna is electrically connected with the high-frequency radio receiving circuit, the low-frequency amplification circuit, the volume control circuit, the audio frequency power amplification circuit and the horn in sequence; because the radio sound amplifying language learning machine gathers receiving, sound amplifying and sound recovering into an integral body, the radio sound amplifying language learning machine has convenient use, small size, easy carrying and low cost, and is suitable for the activities of teaching, giving a lecture, etc.
Description
Technical field
The utility model relates to a kind of public address equipment, particularly a kind of wireless sound amplifier.
Background technology
The public address equipment that in the past was used for the classroom is by independently wireless microphone, sound amplifier and audio amplifier are formed, it needs the construction brigade of specialty to install, and also will add safety theftproof device, just causes costly, general school can not bear, and use is convenient inadequately, sharing is poor.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of wireless language machine that amplifies cheap, easy to use.
The technical scheme that its technical problem that solves the utility model adopts is:
The wireless language machine that amplifies, comprise the language machine shell that amplifies, it is characterized in that: the language machine shell that amplifies be provided with or the language machine shell that amplifies in be built-in with reception antenna, amplifying is provided with power circuit, high frequency wireless receiving circuit, low-frequency amplifier circuit, volume control circuit, audio power amplifying circuit and loudspeaker in the language machine shell, and reception antenna is electrically connected in proper order with high frequency wireless receiving circuit, low-frequency amplifier circuit, volume control circuit, audio power amplifying circuit and loudspeaker.
The beneficial effects of the utility model are: the wireless language machine that amplifies passes through reception antenna, receive the high-frequency signal that outside wireless launcher emits, demodulate audio signal through the high frequency wireless receiving circuit, amplify and the audio power amplification through audio frequency again, drive loudspeaker, restore sound, this wireless language machine that amplifies integrates reception, amplifies, goes back original sound, easy to use, volume is little, be easy to carry, and is with low cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a basic circuit theory diagram of the present utility model;
Fig. 2 is the schematic block circuit diagram that function of the present utility model further expands.
Embodiment
With reference to Fig. 1, the wireless language machine that amplifies, comprise the language machine shell that amplifies, the language machine shell that amplifies be provided with or the language machine shell that amplifies in be built-in with reception antenna L, amplify and be provided with power circuit 1, high frequency wireless receiving circuit 2, low-frequency amplifier circuit 5, volume control circuit 6, audio power amplifying circuit 7 and the loudspeaker 8 that connect electrical network in the language machine shell, reception antenna L is electrically connected in proper order with high frequency wireless receiving circuit 2, low-frequency amplifier circuit 5, volume control circuit 6, audio power amplifying circuit 7 and loudspeaker 8.This is wireless, and the language machine that amplifies passes through reception antenna, receive the high-frequency signal that the outside wireless launcher of being made up of pickup transmitter, low-frequency amplifier circuit, radio-frequency generator and transmitting antenna emits, demodulate audio signal through the high frequency wireless receiving circuit, amplify and the audio power amplification through audio frequency again, drive loudspeaker, can restore sound, each parts combines in the plastic casing, be easy to carry, easy to use, with low cost.
In order to make function of the present utility model more complete, result of use is better, can on above-mentioned architecture basics, expand, its expansion is as follows: with reference to Fig. 1, amplify and also be provided with wire microphone splicing ear N on the language machine shell, amplify and also be provided with low-frequency amplifier circuit 3 and low frequency mixer circuit 4 in the language machine shell, reception antenna L is by high frequency wireless receiving circuit 2, wire microphone splicing ear N is connected with an end of low frequency mixer circuit 4 by low-frequency amplifier circuit 3, the other end of low frequency mixer circuit 4 and low-frequency amplifier circuit 5, audio power amplifying circuit 7 and loudspeaker 8 orders are electrically connected, and can realize the dual-use function of wireless receiving and wired input.
The output that connects the high frequency wireless receiving circuit 2 of reception antenna L is connected with low-frequency amplifier circuit 9.
The BTL audio power amplifying circuit that described audio power amplifying circuit 7 is made up of OTL power amplifier or OCL power amplifier, loudspeaker 8 are connected between two groups of power amplifiers, can obtain the voltage and the power of amplitude peak.
Between the low-frequency amplifier circuit 9 that connects high frequency wireless receiving circuit 2 and the low frequency mixer circuit 4, be connected between the low-frequency amplifier circuit 3 of wire microphone splicing ear N and the low frequency mixer circuit 4 and be respectively equipped with independent volume control circuit 10,11, be convenient to volume separately.
Be connected with another low frequency mixer circuit 12 between the low-frequency amplifier circuit 3 of the high frequency wireless receiving circuit 2 of connection reception antenna L, connection wire microphone splicing ear N, the output connection line lead-out terminal W of low frequency mixer circuit 12 can be connected it with the stereo set of outside.
With reference to Fig. 2, be provided with reverberation effect circuit 13 between low-frequency amplifier circuit 5 and the audio power amplifying circuit 7, make it obtain reverberation effect preferably.
Power circuit 1 is connected with battery charging circuit 14 and storage battery X, uses when making things convenient for field or grid power blackout, and when meeting outage, the uninterrupted automatic power of storage battery uses, and need not to join in addition charger.In order to prevent owing to storage battery because the not enough and continuation use of voltage electric weight, influence the life-span of its storage battery, storage battery X is connected with low-voltage testing circuit 15, low-voltage testing circuit 15 be connected with low pressure indicator light LED with or be connected the low pressure alarming circuit 16 of audio power amplifying circuit 7, when the battery tension electric weight is not enough, low pressure indicator light LED bright and or the low pressure alarming circuit 16 control loudspeaker 8 caution sounds.
Power circuit 1 is connected with battery charger 17, can charge to being used for the employed rechargeable battery of external emitters, guarantees that wireless microphone uses required battery.
Claims (10)
1, the wireless language machine that amplifies, comprise the language machine shell that amplifies, it is characterized in that: the language machine shell that amplifies be provided with or the language machine shell that amplifies in be built-in with reception antenna (L), amplifying is provided with power circuit (1), high frequency wireless receiving circuit (2), low-frequency amplifier circuit (5), volume control circuit (6), audio power amplifying circuit (7) and loudspeaker (8) in the language machine shell, and reception antenna (L) is electrically connected with high frequency wireless receiving circuit (2), low-frequency amplifier circuit (5), volume control circuit (6), audio power amplifying circuit (7) and loudspeaker (8) order.
2, the wireless language machine that amplifies according to claim 1, it is characterized in that: also be provided with wire microphone splicing ear (N) on the language machine shell that amplifies, amplify and also be provided with low-frequency amplifier circuit (3) and low frequency mixer circuit (4) in the language machine shell, reception antenna (L) is by high frequency wireless receiving circuit (2), wire microphone splicing ear (N) is connected the other end of low frequency mixer circuit (4) and low-frequency amplifier circuit (5) by low-frequency amplifier circuit (3) with an end of low frequency mixer circuit (4), volume control circuit (6), audio power amplifying circuit (7) and loudspeaker (8) order are electrically connected.
3, the wireless language machine that amplifies according to claim 2 is characterized in that: the output that connects the high frequency wireless receiving circuit (2) of reception antenna (L) is connected with low-frequency amplifier circuit (9).
4, the wireless language machine that amplifies according to claim 1 and 2, it is characterized in that: the BTL audio power amplifying circuit that described audio power amplifying circuit (7) is made up of OTL power amplifier or OCL power amplifier, loudspeaker (8) are connected between two groups of power amplifiers.
5, the wireless language machine that amplifies according to claim 2 is characterized in that: between the low-frequency amplifier circuit (9) that connects high frequency wireless receiving circuit (2) and the low frequency mixer circuit (4), be connected between the low-frequency amplifier circuit (3) of wire microphone splicing ear (N) and the low frequency mixer circuit (4) and be respectively equipped with independent volume control circuit (10), (11).
6, the wireless language machine that amplifies according to claim 2, it is characterized in that: be connected with another low frequency mixer circuit (12), the output connection line lead-out terminal (W) of low frequency mixer circuit (12) between the low-frequency amplifier circuit (3) of the high frequency wireless receiving circuit (2) of connection reception antenna (L), connection wire microphone splicing ear (N).
7, the wireless language machine that amplifies according to claim 1 and 2 is characterized in that: be provided with reverberation effect circuit (13) between low-frequency amplifier circuit (5) and the audio power amplifying circuit (7).
8, the wireless language machine that amplifies according to claim 1 and 2 is characterized in that: power circuit (1) is connected with battery charging circuit (14) and storage battery (X).
9, the wireless language machine that amplifies according to claim 8, it is characterized in that: storage battery (X) is connected with low-voltage testing circuit (15), low-voltage testing circuit (15) be connected with low pressure indicator light (LED) with or be connected the low pressure alarming circuit (16) of audio power amplifying circuit (7).
10, the wireless language machine that amplifies according to claim 1 and 2, it is characterized in that: power circuit (1) is connected with battery charger (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015118 CN2686267Y (en) | 2004-01-19 | 2004-01-19 | Radio microphone language learning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015118 CN2686267Y (en) | 2004-01-19 | 2004-01-19 | Radio microphone language learning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2686267Y true CN2686267Y (en) | 2005-03-16 |
Family
ID=34668689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420015118 Expired - Fee Related CN2686267Y (en) | 2004-01-19 | 2004-01-19 | Radio microphone language learning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2686267Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103188588A (en) * | 2013-03-06 | 2013-07-03 | 黄桂芳 | Mobile phone sound-amplifying player with magnetic induction way |
| CN103428592A (en) * | 2012-05-21 | 2013-12-04 | 张伟斌 | Sound amplifying device |
| WO2017049501A1 (en) * | 2015-09-23 | 2017-03-30 | 深圳还是威健康科技有限公司 | Sound amplification method and smart wristband |
-
2004
- 2004-01-19 CN CN 200420015118 patent/CN2686267Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103428592A (en) * | 2012-05-21 | 2013-12-04 | 张伟斌 | Sound amplifying device |
| CN103188588A (en) * | 2013-03-06 | 2013-07-03 | 黄桂芳 | Mobile phone sound-amplifying player with magnetic induction way |
| WO2017049501A1 (en) * | 2015-09-23 | 2017-03-30 | 深圳还是威健康科技有限公司 | Sound amplification method and smart wristband |
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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 |