CN2165576Y - Wireless frequency modulating transmitter-receiver - Google Patents
Wireless frequency modulating transmitter-receiver Download PDFInfo
- Publication number
- CN2165576Y CN2165576Y CN 93229054 CN93229054U CN2165576Y CN 2165576 Y CN2165576 Y CN 2165576Y CN 93229054 CN93229054 CN 93229054 CN 93229054 U CN93229054 U CN 93229054U CN 2165576 Y CN2165576 Y CN 2165576Y
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- China
- Prior art keywords
- circuit
- capacitor
- transponder
- receiver
- constitutes
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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 relates to a wireless frequency modulating transceiver, belonging to a domestic appliance. The wireless frequency modulating transceiver of the utility model is designed aiming at the defect that when listening a recorder or washing a color television, the sound can disturb the other people. The utility model is composed of a wireless translator and a receiver, wherein, the translator is composed of an attenuation circuit, an audio modulating circuit, a radio frequency amplifying circuit, and a microphone; the receiver is composed of a single frequency modulating receiving circuit, a local oscillating circuit, a frequency amplifying circuit, and an earphone. The utility model is characterized in that the inner part of the translator is provided with a microphone which can be used as a transmitter or a microphone. The receiver circuit adopts an integrated package with the function of high noise reduction. The utility model has the advantages of small size, good sound quality, and multifunction.
Description
The utility model multifunction wireless frequency modulation transceiver belongs to a kind of daily household electrical appliance.
To listen to recording, TV programme and do not influence other people in order to make, generally adopt the wired earphone receive mode at present, earphone lead frangibility, limited length, the scope of application is very limited; Miniature pocket semiconductor, though body and receiver have integral structure, function singleness, lower tone.
The purpose of this utility model is at above-mentioned defective, has designed a kind of multifunction wireless frequency modulation transceiver.The user utilizes transponder and receiver can listen to recorder sound equipment, rating TV programme, and does not disturb other people to have a rest, work, learn; Utilize transponder to cooperate with the fm band radio-cassette player, transponder can be used as microphone and gives a lecture, sings; Can listen to the radio station FM broadcasting with receiver separately; The double cover wireless transceiver of respectively holding, transponder can send microphone, and receiver can receive the other side's speech, realizes wireless talkback, is daily home-use a kind of multiduty electrical installation.
The utility model is by wireless frequency modulation transponder and wireless frequency modulation receiver, two electrical installations that monomer device combination accessory is formed, and the wireless frequency modulation transponder is by casing (16), function switch K
1(10), power supply E microphone M(14),
1(11) with by attenuator circuit, the printed substrate (12) that modulation circuit and radio frequency amplifying circuit constitute is formed; Receiver is by left earphone case (3), power supply E
2(2), loud speaker EJ potentiometer RP(8),
1(9) and terminal block (7) and right earphone housing (3 '), variable capacitance C
13(5), loud speaker EJ
2And local-oscillator circuit, dull receiving integrate circuit IC frequently, the printed substrate (6) that audio amplifier circuit constitutes constitutes, and it is characterized in that:
Transponder is provided with function switch K
1, when its position is in a, being in off-mode, throw when b its position, by the audio signal of inputs such as television set, recorder, behind local-oscillator circuit, frequency modulation circuit and radio frequency amplifying circuit, through the outside spatial emission of antenna; Be provided with Electret condenser microphone M(14 in the transponder), through frequency modulation circuit, radio frequency amplifying circuit, by the outside spatial emission of antenna; The input socket CZ of transponder and change over switch K
1Between, be provided with by resistance R
1, R
2, R
3And capacitor C
1The attenuator circuit that constitutes; Through the audio signal of attenuator circuit, by coupling capacitance C
2Be input to by triode BG
1, coil L
1And capacitor C
5, and resistance R
5, R
6, capacitor C
3, C
4, C
6The frequency modulation circuit that constitutes, pass through coupling capacitance C again
7Be input to by triode BG
2, coil L
2And capacitor C
8, and resistance R
7The radio frequency amplifying circuit that constitutes is by antenna spatial emission towards periphery; By the radiofrequency signal of repeater antennae emission, after being received by the receiver, through the ic chip pin
12The dull receiving circuit IC frequently of input and by coil L
3, capacitor C
14, variable capacitance C
13Behind the local-oscillator circuit that constitutes, again by the dull pin of receiving integrate circuit IC frequently
14Output audio signal is through variable potentiometer RP, coupling capacitance C
23, be input to by main element triode BG
3, capacitor C
24, C
25, C
26The audio amplifier circuit that constitutes, the audio signal after the amplification is through retardation coil L
4, send into loud speaker EJ
1And EJ
2The input socket CZ of transponder is furnished with the connecting conducting wire that two ends have plug, and antenna socket hole (15) are furnished with the plain conductor that an end has plug; The earphone on line of receiver is made receiver antenna.
The utility model has the advantages that the body miniaturization, in light weight, function is many, and transponder and TV are connected, and utilizes the receiver both can the uppick sound equipment, picture that again can the rating TV, and other people have a rest, study and work at all and do not influence; Utilize transponder to cooperate the fm band radio-cassette player to use, can give a lecture, sing; The double cover wireless frequency modulation transceiver of respectively holding can be made intercom again and use; Use receiver can also receive the FM broadcasting in radio station separately.
Description of drawings:
Fig. 1, wireless frequency modulation transceiver circuit functional-block diagram;
Fig. 2, wireless frequency modulation receiver assembling in kind schematic diagram, wherein: (1) knob, (2) power supply E
2Box, (3) left ear casing, (3 ') auris dextra casing, (4) knob, (5) variable capacitor C
13, (6) printed substrate, (7) wiring board, (8) potentiometer RP, (9) loud speaker EJ
1
Fig. 3, transponder assembling in kind schematic diagram, wherein (10) change over switch K
1, (11) power supply E
1, (12) printed substrate, (13) input socket CZ, (14) microphone M, (15) antenna socket hole, (16) casing;
Fig. 4, repeater circuit schematic diagram;
Fig. 5, acceptor circuit schematic diagram.
In conjunction with the accompanying drawings wireless frequency modulation transceiver operation principle is described:
During wireless frequency modulation transceiver rating TV signal, at first, the input connecting conducting wire one end plug of transponder is inserted the input socket (13) of transponder, connecting conducting wire other end plug inserts the earphone jack of television set, with change over switch K
1(10) throwing in position b is energized E
1, TV signal is by connecting conducting wire, via resistance R
1, R
2, R
3, capacitor C
1The attenuator circuit that constitutes is by coupling capacitance C
2, enter by triode BG
1, coil L
1And C
5And resistance R
5, R
6, capacitor C
3, C
4, C
5The frequency modulation circuit that constitutes, the radiofrequency signal after ovennodulation is through coupling capacitance C
7Be added to by triode BG
2, coil L
2And capacitor C
8, resistance R
7The radio frequency amplifying circuit that constitutes, the radiofrequency signal after the amplification through antenna continuously to spatial emission; This moment, the knob (1) of receiver is opened, i.e. energized E
2, after being received by the radiofrequency signal of repeater antennae emission, through coupling capacitance C
19By the integrated circuit (IC) pin
12, be input to dull receiving integrate circuit IC frequently after, amplify and by coil L through internal radio frequency
3And capacitor C
14, variable capacitance C
13(5) local-oscillator circuit of Gou Chenging, after the radiofrequency signal process amplification by the antenna reception, with oscillation signals according, IC carries out mixing at dullness frequency receiving circuit, puts in the warp again, behind the frequency discrimination, by pin
14Output, the audio signal after the output is through potentiometer RP, coupling capacitance C
23, enter by triode BG
3, retardation coil L
4, capacitor C
24, C
25, C
26, resistance R
8The audio amplifier circuit that constitutes, input to loud speaker EJ again
1And EJ
2Be worn over the earphone of head, the knob (4) with hand rotation right earphone makes variable capacitance C
13(5) change frequency, can make observer choose the frequency consistent, rotate the knob (1) of left earphone again with hand, make potentiometer RP(8 with transponder) rotate, can make that observer obtains that tonequality is good, volume is moderate listen to, view reception effect.
Open the fm band radio-cassette player, perform the every preparation before singing after, transponder can be used as to be sung microphone and uses, at first, with the change over switch K of transponder
1(10) throw in the d position, after singer's song receives by the Electret condenser microphone in the transponder, by coupling capacitance C
2Import again by main element triode BG
1, coil L
1And capacitor C
5Behind the frequency modulation circuit that constitutes, again through coupling capacitance C
7Be input to by main element triode BG
2, coil L
2And capacitor C
8Deng the radio frequency amplifying circuit that constitutes, and through antenna spatial emission towards periphery, after radio-cassette player received the radiofrequency signal of singer by the repeater antennae emission, through handling, singer's song was sent in the space towards periphery again.
Use earphone separately, open knob (1), energized E
2, the fm broadcast signal in radio station is after the reception of earphone tie, by coupling capacitance C
19By dullness frequency receiving circuit IC pin
12Enter dull receiving circuit IC frequently and by coil L
3And capacitor C
14, variable capacitance C
13The oscillating circuit that constitutes, radiofrequency signal through mixing, in put, behind the frequency discrimination, by dullness frequently receiving circuit IC be input to coupling capacitance C
23Enter by triode BG
3, capacitor C
24, C
25, C
26And resistance R
8Behind the audio amplifier circuit that constitutes, through retardation coil L
4Be input to loud speaker EJ
1And EJ
2, the user can receive the FM broadcasting in radio station by earphone, and turning knob (1) can make volume moderate, and knob (4) can change the program of radio station that the frequency selection is liked; Close knob (1) potentiometer RP and make power supply E
2Outage, earphone promptly is in the state of quitting work.
The double cover wireless frequency modulation transceiver of respectively holding can be used as the intercom use.The available transponder of first is opened change over switch K as sending microphone
1To the d place, can energized E
1, rotate receiver knob (1) again, can energized E
2After the Person B got ready by the same manner of first, first was aimed at transponder and is given orders or instructions to the Person B, after the speech of first is received by the Electret condenser microphone in the transponder of first, through coupling capacitance C
2Be input to by main components and parts triode BG
1, capacitor C
5With coil L
1, capacitor C
4, C
5, resistance R
6, R
5Behind the modulation circuit that constitutes, pass through coupling capacitance C again
7Be input to by triode BG
2, coil L
2And capacitor C
8, resistance R
7The radio frequency amplifying circuit that constitutes, the signal after amplifying are again through antenna spatial emission towards periphery; After the radiofrequency signal by the emission of first repeater antennae of Person B's earphone through the reception of left and right sides earphone tie, through the coupling capacitance C of Person B's receiver
19By pin
12Send into dull receiving circuit IC and capacitor C frequently
14, C
13With coil L
3The local-oscillator circuit that constitutes, through mixing, in put, the audio signal of frequency discrimination is by pin
14Output to coupling capacitance C
23, through capacitor C
23Coupling, audio signal is input to by main element triode BG
3, capacitor C
24, C
26, C
25And resistance R
8Behind the audio amplifier circuit that constitutes, by retardation coil L
4Be input to loud speaker EJ
1And EJ
2, regulating left earphone knob (1) or right earphone rotation (4), the Person B just can clearly receive the speech of first in the earphone; Equally, the Person B aims at Person B's transponder first is given orders or instructions, after the Electret condenser microphone in the transponder receives Person B's voice signal, through coupling capacitance C
2, be input to by main element triode BG
1, coil L
1And capacitor C
6, C
5, C
3Resistance R
6, R
5, R
4The modulation circuit that constitutes passes through coupling capacitance C again
7Be input to by triode BG
2, coil L
2And capacitor C
8, resistance R
7The radio frequency amplifying circuit that constitutes is transmitted into surrounding space through antenna, and the radiofrequency signal of Person B's repeater antennae emission is after the left and right sides earphone connecting conducting wire reception of first, through the coupling capacitance C of first receiver
19Through pin
12Enter dull receiving circuit IC frequently and by coil L
3And capacitor C
14, variable capacitance C
13The modulation circuit that constitutes, through mixing, in put, behind the frequency discrimination, by pin
14Be input to coupling capacitance C
23After, send into again by triode BG
3Capacitor C
26, C
24, C
25, resistance R
8The audio amplifier circuit that constitutes, and be input to loud speaker EJ
1And EJ
2, regulate left earphone knob (1) and right earphone knob (4), first can receive Person B's the sound of giving orders or instructions in the earphone, reaches the purpose of the first and second two people's intercommunications.
R in the accompanying drawing all represents resistance, and C all represents electric capacity.The dull pin of receiving circuit IC frequently among the figure
1Connect capacitor C
10, pin
2Connect capacitor C
11, pin
3Connect capacitor C
12, pin
4Connect output end of oscillating circuit, pin
5Connect oscillating circuit input, pin
6Connect capacitor C
15, pin
7Connect capacitor C
16, pin
8Connect capacitor C
17, pin
9Be empty pin, pin
10And pin
11Connect capacitor C
18, pin
13Connect capacitor C
20, pin
15Connect capacitor C
21, pin
16Connect capacitor C
22
Claims (4)
1, the electrical installation be made up of wireless frequency modulation transponder and two monomer devices of wireless frequency modulation receiver combination accessory of the utility model wireless frequency modulation transceiver, the wireless frequency modulation transponder is by casing (16), function switch K
1(10), microphone M (14), power supply E
1(11) with by attenuator circuit, the printed substrate (12) that modulation circuit and radio frequency amplifying circuit constitute is formed, and receiver is by left earphone case (3), power supply E
2(2), potentiometer RP (8), loud speaker EJ
1(9) and wiring board (7) and right earphone housing (3 '), variable capacitance C
13(5) loud speaker EJ
2Form with the printed substrate (6) that constitutes by dullness frequency receiving integrate circuit IC, local-oscillator circuit, audio amplifier circuit, it is characterized in that:
A. transponder is provided with function switch K
1, when its position is in a off-mode, throw when b its position, can listen to the sound equipment of inputs such as television set, recorder,
B. transponder is provided with Electret condenser microphone M (14), change over switch K
1Throw when the d position, external sound can behind the radio frequency amplifying circuit, outwards be launched by antenna by microphone through frequency modulation circuit,
C. the input socket CZ of transponder and change over switch K
1Between, be provided with by resistance R
1R
2R
3And capacitor C
1The attenuator circuit that constitutes,
D. the attenuator circuit of transponder is by coupling capacitance C
2With by triode BG
1, coil L
1And capacitor C
5And resistance R
5, R
6, capacitor C
3, C
4, C
6The frequency modulation circuit that constitutes passes through coupling capacitance C again with the audio signal of input
7Be input to by triode BG
2, coil L
2And capacitor C
8And resistance R
7The radio frequency amplifying circuit that constitutes is transmitted into surrounding space by antenna,
E. after receiver receives the radiofrequency signal of being launched by repeater antennae, through coupling capacitance C
19, by the integrated circuit (IC) pin
12Input dull receiving circuit IC and coil L frequently
3, capacitor C
14With variable capacitance C
18Behind the local-oscillator circuit that constitutes, again by the dull pin of receiving circuit IC frequently
14Output audio signal is through variable potentiometer RP, coupling capacitance C
28Be input to by main element triode BG
8, capacitor C
24, C
25The audio amplifier circuit that constitutes, the audio signal after the amplification is input to retardation coil L again
4Send into loud speaker EJ
1And EJ
2
2, wireless receiver according to claim 1 is characterized in that the input socket CZ of transponder being furnished with the connecting conducting wire that two ends have plug;
3,, it is characterized in that repeater antennae socket aperture (15) is furnished with the metal wire that an end has plug according to claim 1,2 described wireless receivers;
4, wireless receiver according to claim 1 is characterized in that the earphone tie is as the receiver reception antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229054 CN2165576Y (en) | 1993-08-20 | 1993-08-20 | Wireless frequency modulating transmitter-receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229054 CN2165576Y (en) | 1993-08-20 | 1993-08-20 | Wireless frequency modulating transmitter-receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2165576Y true CN2165576Y (en) | 1994-05-18 |
Family
ID=33805990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93229054 Expired - Fee Related CN2165576Y (en) | 1993-08-20 | 1993-08-20 | Wireless frequency modulating transmitter-receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2165576Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504978A (en) * | 2019-09-06 | 2019-11-26 | 黄勇 | Distant signal frequency modulation repeater-transmitter |
-
1993
- 1993-08-20 CN CN 93229054 patent/CN2165576Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504978A (en) * | 2019-09-06 | 2019-11-26 | 黄勇 | Distant signal frequency modulation repeater-transmitter |
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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 |