CN2274395Y

CN2274395Y - Radio receiver for stereo television set

Info

Publication number: CN2274395Y
Application number: CN96228593U
Authority: CN
Inventors: 徐金堂
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-16
Filing date: 1996-08-16
Publication date: 1998-02-11
Anticipated expiration: 2006-08-16

Abstract

The utility model provides a radio receiver for a stereo television, which is composed of frequency modulation receivers and frequency modulation emitters, wherein each frequency modulation emitter is composed of an emitting circuit A; each frequency modulation receiver is composed of a receiving circuit B and a power amplifying circuit C. The frequency modulation emitters are connected with an earplug socket of the television, and are arranged in stereo earphones. The radio receiver for a stereo television has the characteristics of reasonable design, simple structure, convenient use, etc., and can be used for people to watch television in families, or hotels, or office occasions without influencing the work, the rest and the study of other people.

Description

The wireless listener of stereophonic TV

The utility model relates to the stereo set in a kind of household electrical appliance, specifically a kind of wireless listener of stereophonic TV of listening to TV programme.

Television receiver is to popularize very much and the highest household electrical appliance of utilance, no matter be in still in the hotel, restaurant or office, people will be as long as will watch TV programme if having time, to obtain spiritual enjoyment, but the sound-producing device of existing TV is mounted in the television set, utilize the loudspeaker in the television set in TV reception, to listen to the sound of televising, its deficiency is when having two people above in same room, someone wants to see TV, someone wants to have a rest or has the people to think study, the sound of television set will influence other people rest so, study, especially in the hotel, because the people who stays is from from all directions, have first, back the arriving that has, the thing that first this done is finished, the idle later just hope of having a rest is watched TV to kill time, but the late comer then wishes to have a good rest because of journey fatigue, be not in the mood for together seeing TV with other people, for this reason, the broadcast sound of TV programme can influence late comer's rest undoubtedly, this thing is very general in people's life, personnel's deepest feelings of especially often going out, but good solution is not also arranged at present.

The purpose of this utility model provide a kind of can not only be for wishing that listen to the people who televiews listens to TV reception, other people have a rest, the wireless listener of stereophonic TV of study but also can avoid influencing.

The purpose of this utility model realizes in the following manner, utilize frequency-modulated transmitter to join by the earplug socket on the television set and the horn wire of television set, become FM signal to launch the tv audio conversion of signals, the FM signal of TV is received convert audio signal again to by being installed in FM receiver in the stereophone, amplify through power amplifier, by earphone sound is sent, for earphone wearer personal reception, because what frequency-modulated transmitter sent is same FM signal, so a plurality of stereophones can receive same FM signal simultaneously, want that like this people who sees TV programme can listen to TV reception by wearing stereophone, and avoid influencing other people rest and study.

Accompanying drawing 1 is the structural representation of the modulating emission circuit of the wireless listener of stereophonic TV;

Accompanying drawing 2 is the structural representation of the FM reception circuit of the wireless listener of stereophonic TV.

Radio receiver for stereo television set of the present utility model is done in detail following with reference to Figure of description The ground explanation.

Radio receiver for stereo television set of the present utility model, its structure is to be made of fremodyne and frequency-modulated transmitter, frequency-modulated transmitter is to be made of radiating circuit A, fremodyne is to be made of receiving circuit B and power amplifier C, and the radiating circuit A in the transmitter is by resistance R₁Capacitor C₁’ -C′ ₅, triode T, inductance L₁、L ₂, battery E, K switch and antenna TX consist of inductance L₁, capacitor C '₅, inductance L₂, K switch is connected in series with the both positive and negative polarity of battery E and consists of the loop, capacitor C '₁Colelctor electrode, emitter stage and the capacitor C of serial connection triode T '₄Join with positive pole and the ground wire of battery E, the base stage of resistance R serial connection triode T and capacitor C '₃Between the positive pole and ground wire of battery E, the base stage of triode T serial connection capacitor C '₂Join with the horn wire of ground wire as signal input part a, b and television set, the collector and emitter of triode T and capacitor C '₅Two ends and connect antenna TX and triode The colelctor electrode of T joins, the minus earth of battery E.

The receiving circuit B of fremodyne is by FM reception integrated circuit (model is TDA7010T) IC ₁, capacitor C ₁-C ₁₂, inductance L ₃And antenna TX constitutes capacitor C ₁-C ₉Respectively successively with FM reception integrated circuit (model is TDA7010T)

IC

₁16,15,13,10,9,7,5,3,1 pin and battery E anodal mutually and connect inductance L ₃And capacitor C ₇And meet antenna TX and FM reception integrated circuit (model is TDA7010T) IC ₁11 pin join FM reception integrated circuit (model is TDA7010T) IC ₁4 pin and the anodal line of battery E join FM reception integrated circuit (model is TDA7010T) IC ₁14 pin and ground wire join capacitor C ₁₀, C ₁₁Be connected on FM reception integrated circuit (model is TDA7010T) IC respectively ₁12 pin, 2 pin and ground wire on, capacitor C 12 and FM reception integrated circuit (model is TDA7010T) IC ₁6,8 pin and connect.

The power amplifier C of fremodyne is by frequency power amplifying IC (model is TDA2009) IC ₂, capacitor C ₁₃-C ₂₄, resistance R ₁-R ₈, loudspeaker Y ₁, Y ₂, battery E and K switch constitute capacitor C ₁₃Be serially connected in FM reception integrated circuit (model is TDA7010T) IC ₁1 pin and frequency power amplifying IC (model is TDA2009) IC ₂5 pin between, resistance R ₁A termination capacitor C ₁₃Positive level, other end ground connection, capacitor C ₁₆With frequency power amplifying IC (model is TDA2009) IC ₂3 pin and ground wire and connect resistance R ₂And capacitor C ₁₄Negative pole and ground wire and meet frequency power amplifying IC (model is TDA2009) IC ₂9 pin connect the positive pole of battery E, 6 pin ground connection, frequency power amplifying IC (model is TDA2009) IC ₂4 pin serial connections capacitor C ₁₅And resistance R ₇Back ground connection, capacitor C ₁₈And C ₂₃And connect between the positive pole and ground wire of battery E resistance R ₃An end and frequency power amplifying IC (model is TDA2009) IC ₂8 pin join the other end and capacitor C ₁₅Negative pole join loudspeaker Y ₁, capacitor C ₁₉, resistance R ₇, capacitor C ₂₀Be serially connected in frequency power amplifying IC (model is TDA2009) IC respectively ₂8 pin and ground wire between.

Capacitor C in the power amplifier ₂₄, C ₁₄Be serially connected in frequency power amplifying IC (model is TDA2009) IC ₂1 pin and FM reception integrated circuit (model is TDA7010T) IC ₁2 pin between, resistance R ₄, resistance R ₅, capacitor C ₂₂, resistance R ₆, capacitor C ₂₁, loudspeaker Y ₂Be serially connected with frequency power amplifying IC (model is TA2009) IC respectively ₂10 pin and ground wire between, capacitor C ₁₇One ending connecting audio power amplification circuit (model is TDA2009) IC ₂2 pin, the other end and resistance R ₄, R ₅Join, mains switch K is connected between the negative pole and ground wire of battery E.

Embodiment:

Its processing and fabricating of the wireless listener of stereophonic TV of the present utility model is very simple and convenient, installs shown in the by specification accompanying drawing to make to get final product integrated circuit (IC) ₁, IC ₂Reach other electric elements and be common commercially available prod, as long as wiring is errorless all can be successful, IC ₁What adopt is the FM receiver integrated circuit, and model is TDA7010T, the IC in the power amplifier ₂What adopt is TDA2009 good quality audio integrated power amplifier, IC ₁, IC ₂And peripheral cell all can be welded on the circuit board and be fixed among the earphone, and a loud speaker and battery only are installed in another earphone.

Radio receiver for stereo television set of the present utility model is compared with existing technology, and has design and closes Reason, simple in structure, be easy to processing, the characteristics such as volume is little, easy to use, can be used for family, trip TV under shop or the office watches and listen and avoids affecting other people work, rest and study, Thereby, have good value for applications.

Except the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims

1. the wireless listener of stereophonic TV comprises fremodyne and frequency-modulated transmitter, it is characterized in that frequency-modulated transmitter is to be made of radiating circuit A, and fremodyne is to be made of receiving circuit B and power amplifier C, and the radiating circuit B in the frequency-modulated transmitter is by resistance R ₁Capacitor C ₁'-C ' ₅, triode T, inductance L ₁, L ₂, battery E, K switch and antenna TX constitute inductance L ₁, capacitor C ' ₅, L ₂K switch is connected in series with the both positive and negative polarity of battery E and constitutes the loop, capacitor C ' ₁Collector electrode, emitter and the capacitor C of serial connection triode T ' ₄Join with positive pole and the ground wire of battery E, the base stage of resistance R serial connection triode T and capacitor C ' ₃Between the positive pole and ground wire of battery E, the base stage of triode T serial connection capacitor C ' ₂Join with the horn wire of ground wire as signal input part a, b and television set, the collector and emitter of triode T and capacitor C ' ₅Two ends and connect, the collector electrode of antenna TX and triode T joins, the minus earth of battery E.

2. the wireless listener of stereophonic TV according to claim 1, the receiving circuit B that it is characterized in that fremodyne are by FM reception integrated circuit (model is TDA7010T) IC ₁, capacitor C ₁-C ₁₂, inductance L ₃And antenna TX constitutes capacitor C ₁-C ₉Respectively successively with FM reception integrated circuit (model is TDA7010T) IC ₁16,15,13,10,9,7,5,3,1 pin and battery E anodal mutually and connect inductance L ₃And capacitor C ₇And meet antenna TX and FM reception integrated circuit (model is TDA7010T) IC ₁11 pin join FM reception integrated circuit (model is TDA7010T) IC ₁4 pin and the anodal line of battery E join FM reception integrated circuit (model is TDA7010T) IC ₁14 pin and ground wire join capacitor C ₁₀, C ₁₁Be connected on FM reception integrated circuit (model is TDA7010T) IC respectively ₁12 pin, 2 pin and ground wire on, capacitor C ₁₂With FM reception integrated circuit (model is TDA7010T) IC ₁6,8 pin and connect.

3. the wireless listener of stereophonic TV according to claim 1, the power amplifier C that it is characterized in that fremodyne are by frequency power amplifying IC (model is TDA2009) IC ₂, capacitor C ₁₃-C ₂₄, resistance R ₁-R ₈, loudspeaker Y ₁, Y ₂, battery E and K switch constitute capacitor C ₁₃Be serially connected in FM reception integrated circuit (model is TDA7010T) IC ₁1 pin and frequency power amplifying IC (model is TDA2009) IC ₂5 pin between, resistance R ₁A termination capacitor C ₁₃Positive level, other end ground connection, capacitor C ₁₆With frequency power amplifying IC (model is TDA2009) IC ₂3 pin and ground wire and connect resistance R ₂And capacitor C ₁₄Negative pole and ground wire and meet frequency power amplifying IC (model is TDA2009) IC ₂9 pin connect the positive pole of battery E, 6 pin ground connection, frequency power amplifying IC (model is TDA2009) IC ₂4 pin serial connections capacitor C ₁₅And resistance R ₇Back ground connection, capacitor C ₁₈And C ₂₃And connect between the positive pole and ground wire of battery E resistance R ₃An end and frequency power amplifying IC (model is TDA2009) IC ₂8 pin join the other end and capacitor C ₁₅Negative pole join loudspeaker Y ₁, capacitor C ₁₉, resistance R ₇, capacitor C ₂₀Be serially connected in frequency power amplifying IC (model is TDA2009) IC respectively ₂8 pin and ground wire between.

4. the wireless listener of stereophonic TV according to claim 3 is characterized in that the capacitor C in the power amplifier ₂₄, C ₁₄Be serially connected in frequency power amplifying IC (model is TDA2009) IC ₂1 pin and FM reception integrated circuit (model is TDA7010T) IC ₁2 pin between, resistance R ₄, resistance R ₅, capacitor C ₂₂, resistance R ₆, capacitor C ₂₁, loudspeaker Y ₂Be serially connected with frequency power amplifying IC (model is TDA2009) IC respectively ₂10 pin and ground wire between, capacitor C ₁₇One ending connecting audio power amplification circuit (model is TDA2009) IC ₂2 pin, the other end and resistance R ₄, R ₅Join, mains switch K is connected between the negative pole and ground wire of battery E.