CN2753088Y - Radio remote control megaphone - Google Patents
Radio remote control megaphone Download PDFInfo
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- CN2753088Y CN2753088Y CN 200420052299 CN200420052299U CN2753088Y CN 2753088 Y CN2753088 Y CN 2753088Y CN 200420052299 CN200420052299 CN 200420052299 CN 200420052299 U CN200420052299 U CN 200420052299U CN 2753088 Y CN2753088 Y CN 2753088Y
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Abstract
The utility model discloses a radio remote megaphone which belongs to the technical field of public address sets. The device aims to solve the defects that the existing megaphone can be used only by stringing, has fixed operating places, etc. The structure of the utility model is composed of a power circuit A, a power amplification circuit B and an interphone receiver C, each two of which are connected. The utility model has the characteristics that the radio remote megaphone can be used without stringing, speakers can utilize interphones to carry out operation everywhere in any moment, etc., and the utility model is widely suitable for broadcasting enterprises in rural regions, factories and mines, enterprises and institutions.
Description
Technical field
The utility model relates to a kind of public address set, especially a kind of wireless remote control sound amplifier that can use by wireless signal transmitting device remote controls such as intercoms.
Background technology
Sound amplifier of the prior art is wired sound amplifier, and sound amplifier must be placed on the studio with voice-input device (as microphone etc.), and with electric wire sound amplifier is joined with audio amplifier that is placed on places such as square or loudspeaker and just can use.So just need long electric wire in outdoor introducing studio, both increase the difficulty when installing, and bury hidden danger for again the use under the thunder and lightning weather.In addition, because between sound amplifier and the voice-input device also is wired connection, and be placed in the studio simultaneously, so, the broadcasting personnel want by broadcast distribution message, and no matter at that time where it is in, just can carry out after all must getting back to the studio, both be unfavorable for the timely issue of message, and brought many inconvenience for again the broadcasting personnel.
Summary of the invention
In order to overcome the deficiency of existing sound amplifier, the utility model provides a kind of wireless remote control sound amplifier, and having of this wireless remote control sound amplifier be simple in structure, can utilize wireless speech sender units such as intercom to carry out characteristics such as radio broadcasting control.
The technical scheme that its technical problem that solves the utility model adopts is: the wireless remote control sound amplifier, constitute by power circuit A, power amplifier B, intercom receiver C, and power circuit A, power amplifier B, intercom receiver C join in twos, wherein,
Power circuit A is by capacitor C 8-C10, relay J, relay switch JK, transformer B1, diode D1, D2, rectifier ZL1, integrated regulator U3 constitutes, the external 220V power supply of first polar curve circle L3 of transformer B1, secondary coil L1, diode D2, D1 is connected in series successively and forms the loop, the intermediate contact of diode D1 and D2 joins by capacitor C 10 and ground wire, the intermediate contact of diode D1 and D2 also joins by 5 pin of the integrated amplifier U2 among relay switch JK and the power amplifier B, relay J is serially connected between ground wire and the intercom receiver C, the two ends of the secondary coil L2 of transformer B1 join with 1 pin and 3 pin of rectifier ZL1 respectively, 2 pin and the ground wire of rectifier ZL1 join, 1 pin of 4 pin and integrated regulator U3 joins, 2 pin of integrated regulator U3 and intercom receiver C+the 8V power input joins, 3 pin and ground wire join, capacitor C 8 is serially connected between 2 pin and 3 pin of integrated regulator U3, and capacitor C 9 is serially connected between 1 pin and 3 pin of integrated regulator U3;
Power amplifier B is by resistance R 1-R12, capacitor C 1-C7, integrated amplifier U1, U2 constitutes, resistance R 1 is serially connected between the signal input part IN1 and IN2 of power amplifier, signal input part IN2 and ground wire join, resistance R 2, R4 is serially connected between 5 pin of ground wire and integrated amplifier U1,1 pin of integrated amplifier U1 joins with signal input part IN1 by capacitor C 1,2 pin are by capacitor C 2, resistance R 6 is joined with ground wire, 3 pin directly and ground wire join, 4 pin and loudspeaker output Uot1 join, 5 pin of 5 pin and integrated amplifier U2 join, capacitor C 3, C4 is attempted by between 5 pin and ground wire of integrated amplifier U1, resistance R 7 is serially connected between 4 pin of capacitor C 2 and integrated amplifier U1, resistance R 3, R5 is serially connected between 1 pin of 1 pin of integrated amplifier U1 and integrated amplifier U2, resistance R 2, the intermediate contact of R4 and resistance R 3, the intermediate contact of R5 joins, capacitor C 5, resistance R 8 is serially connected between 4 pin and ground wire of integrated amplifier U1, the 2 pin serial connection capacitor C 7 of integrated amplifier U2, resistance R 10 backs join with 4 pin of integrated amplifier U2,4 pin also join with loudspeaker output Uot2,3 pin and ground wire join, one end of resistance R 11 and 4 pin of integrated amplifier U1 join, the intermediate contact of the other end and capacitor C 7 and resistance R 10 joins, resistance R 12 is serially connected between capacitor C 7 and the ground wire, capacitor C 6, resistance R 9 is serially connected between 4 pin and ground wire of integrated amplifier U2;
Signal output part Uot3, the Uot4 of intercom receiver C joins with signal input part IN1 and the IN2 of power amplifier B respectively, and power supply input negative pole and ground wire join.
Utilize intercom receiver C to receive the voice signal that intercom etc. is launched, and this signal is converted into electrical signal transfer gives power amplifier B, power amplifier B handles signal and amplifies and output.Power circuit A is converted into 30V and the output of 8V voltage with the 220V voltage of input, and 30V is output as power amplifier B power supply, and 8V is output as intercom receiver C power supply.
During use in the process, the control signal of utilizing intercom receiver C to send is controlled the relay among the power circuit A: when intercom receiver C does not receive voice signal at ordinary times, relay switch among the power circuit A is in normally open, power amplifier B is not powered; When intercom receiver C receives voice signal, can send control signal, the relay coil conducting, the relay switch closure, power amplifier B starts working.
In addition, in use, carry out the voice transmission, can also go up at other audio playing apparatus (as: recorder, CD player) and add audio emitting device, so just can utilize sound amplifier to play news or music except utilizing intercom.
Wireless remote control sound amplifier of the present utility model is compared with prior art has following outstanding beneficial effect:
(1) can be connected ground such as also together being arranged on outdoor square with audio amplifier or loudspeaker, need not stringing, stop the potential safety hazard that thunder and lightning weather uses down;
(2) utilize wireless that sound amplifier is carried out voice transfer and control, provide convenience, also make announcer's operation become more convenient for the timely issue of message;
(3) one intercoms or other wireless speech sender unit can especially be fit to Da Zhuan and organize village user use more with the wireless remote control sound amplifier of number playscript with stage directions utility model.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing 1 is the schematic block circuit diagram of wireless remote control sound amplifier;
Accompanying drawing 2 is the electrical block diagram of wireless remote control sound amplifier.
Embodiment
Explain below with reference to Figure of description wireless remote control sound amplifier of the present utility model being done:
As shown in Figure 1, wireless remote control sound amplifier of the present utility model, its structure is to be made of power circuit A, power amplifier B, intercom receiver C, power circuit A, power amplifier B, intercom receiver C join in twos.
As shown in Figure 2, power circuit A is by capacitor C 8-C10, relay J, relay switch JK, transformer B1, diode D1, D2, rectifier ZL1, integrated regulator U3 constitutes, the external 220V power supply of first polar curve circle L3 of transformer B1, secondary coil L1, diode D2, D1 is connected in series successively and forms the loop, the intermediate contact of diode D1 and D2 joins by capacitor C 10 and ground wire, the intermediate contact of diode D1 and D2 also joins by 5 pin of the integrated amplifier U2 among relay switch JK and the power amplifier B, relay J is serially connected between ground wire and the intercom receiver C, the two ends of the secondary coil L2 of transformer B1 join with 1 pin and 3 pin of rectifier ZL1 respectively, 2 pin and the ground wire of rectifier ZL1 join, 1 pin of 4 pin and integrated regulator U3 joins, 2 pin of integrated regulator U3 and intercom receiver C+the 8V power input joins, 3 pin and ground wire join, capacitor C 8 is serially connected between 2 pin and 3 pin of integrated regulator U3, and capacitor C 9 is serially connected between 1 pin and 3 pin of integrated regulator U3.Wherein, the model of integrated regulator U3 is LM7808.
Power amplifier B is by resistance R 1-R12, capacitor C 1-C7, integrated amplifier U1, U2 constitutes, resistance R 1 is serially connected between the signal input part IN1 and IN2 of power amplifier, signal input part IN2 and ground wire join, resistance R 2, R4 is serially connected between 5 pin of ground wire and integrated amplifier U1,1 pin of integrated amplifier U1 joins with signal input part IN1 by capacitor C 1,2 pin are by capacitor C 2, resistance R 6 is joined with ground wire, 3 pin directly and ground wire join, 4 pin and loudspeaker output Uot1 join, 5 pin of 5 pin and integrated amplifier U2 join, capacitor C 3, C4 is attempted by between 5 pin and ground wire of integrated amplifier U1, resistance R 7 is serially connected between 4 pin of capacitor C 2 and integrated amplifier U1, resistance R 3, R5 is serially connected between 1 pin of 1 pin of integrated amplifier U1 and integrated amplifier U2, resistance R 2, the intermediate contact of R4 and resistance R 3, the intermediate contact of R5 joins, capacitor C 5, resistance R 8 is serially connected between 4 pin and ground wire of integrated amplifier U1, the 2 pin serial connection capacitor C 7 of integrated amplifier U2, resistance R 10 backs join with 4 pin of integrated amplifier U2,4 pin also join with loudspeaker output Uot2,3 pin and ground wire join, one end of resistance R 11 and 4 pin of integrated amplifier U1 join, the intermediate contact of the other end and capacitor C 7 and resistance R 10 joins, resistance R 12 is serially connected between capacitor C 7 and the ground wire, capacitor C 6, resistance R 9 is serially connected between 4 pin and ground wire of integrated amplifier U2.Wherein, the model of integrated amplifier U1, U2 is LM1875.
Intercom receiver C is a known technology, and signal output part Uot3, the Uot4 of intercom receiver C joins with signal input part IN1 and the IN2 of power amplifier B respectively, and power supply input negative pole and ground wire join.
Employed other resistance, electric capacity, rectifier, relay, transformer are the universal electric product in the circuit.
During use, only need loudspeaker output Uot1, Uot2 are joined and can use with audio amplifier or loudspeaker.In addition, can also be simultaneously in the circuit and connect two groups or more power amplifier, like this, a wireless remote control sound amplifier just can be with organize audio amplifiers or loudspeaker work more.
Except that the described technical characterictic of specification, be the known technology of those skilled in the art.
Claims (1)
1, wireless remote control sound amplifier is made of power circuit (A), power amplifier (B), intercom receiver (C), it is characterized in that power circuit (A), power amplifier (B), intercom receiver (C) join in twos, wherein,
Power circuit (A) is by capacitor C 8-C10, relay J, relay switch JK, transformer B1, diode D1, D2, rectifier ZL1, integrated regulator U3 constitutes, the external 220V power supply of first polar curve circle L3 of transformer B1, secondary coil L1, diode D2, D1 is connected in series successively and forms the loop, the intermediate contact of diode D1 and D2 joins by capacitor C 10 and ground wire, the intermediate contact of diode D1 and D2 also joins by 5 pin of the integrated amplifier U2 in relay switch JK and the power amplifier (B), relay J is serially connected between ground wire and the intercom receiver (C), the two ends of the secondary coil L2 of transformer B1 join with 1 pin and 3 pin of rectifier ZL1 respectively, 2 pin and the ground wire of rectifier ZL1 join, 1 pin of 4 pin and integrated regulator U3 joins, 2 pin of integrated regulator U3 and intercom receiver (C)+the 8V power input joins, 3 pin and ground wire join, capacitor C 8 is serially connected between 2 pin and 3 pin of integrated regulator U3, and capacitor C 9 is serially connected between 1 pin and 3 pin of integrated regulator U3;
Power amplifier (B) is by resistance R 1-R12, capacitor C 1-C7, integrated amplifier U1, U2 constitutes, resistance R 1 is serially connected between the signal input part IN1 and IN2 of power amplifier, signal input part IN2 and ground wire join, resistance R 2, R4 is serially connected between 5 pin of ground wire and integrated amplifier U1,1 pin of integrated amplifier U1 joins with signal input part IN1 by capacitor C 1,2 pin are by capacitor C 2, resistance R 6 is joined with ground wire, 3 pin directly and ground wire join, 4 pin and loudspeaker output Uot1 join, 5 pin of 5 pin and integrated amplifier U2 join, capacitor C 3, C4 is attempted by between 5 pin and ground wire of integrated amplifier U1, resistance R 7 is serially connected between 4 pin of capacitor C 2 and integrated amplifier U1, resistance R 3, R5 is serially connected between 1 pin of 1 pin of integrated amplifier U1 and integrated amplifier U2, resistance R 2, the intermediate contact of R4 and resistance R 3, the intermediate contact of R5 joins, capacitor C 5, resistance R 8 is serially connected between 4 pin and ground wire of integrated amplifier U1, the 2 pin serial connection capacitor C 7 of integrated amplifier U2, resistance R 10 backs join with 4 pin of integrated amplifier U2,4 pin also join with loudspeaker output Uot2, .3 pin and ground wire join, one end of resistance R 11 and 4 pin of integrated amplifier U1 join, the intermediate contact of the other end and capacitor C 7 and resistance R 10 joins, resistance R 12 is serially connected between capacitor C 7 and the ground wire, capacitor C 6, resistance R 9 is serially connected between 4 pin and ground wire of integrated amplifier U2;
Signal output part Uot3, the Uot4 of intercom receiver (C) joins with the signal input part IN1 and the IN2 of power amplifier (B) respectively, and power supply input negative pole and ground wire join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052299 CN2753088Y (en) | 2004-07-16 | 2004-07-16 | Radio remote control megaphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052299 CN2753088Y (en) | 2004-07-16 | 2004-07-16 | Radio remote control megaphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2753088Y true CN2753088Y (en) | 2006-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420052299 Expired - Fee Related CN2753088Y (en) | 2004-07-16 | 2004-07-16 | Radio remote control megaphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2753088Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104460A (en) * | 2013-04-09 | 2014-10-15 | 中国计量学院 | Wireless interphone intelligent control broadcasting system having fingerprint identification function |
-
2004
- 2004-07-16 CN CN 200420052299 patent/CN2753088Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104460A (en) * | 2013-04-09 | 2014-10-15 | 中国计量学院 | Wireless interphone intelligent control broadcasting system having fingerprint identification function |
| CN104104460B (en) * | 2013-04-09 | 2017-05-24 | 中国计量学院 | Wireless interphone intelligent control broadcasting system having fingerprint identification function |
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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 |