CN2083374U - Multi-purpose electronic companion - Google Patents
Multi-purpose electronic companion Download PDFInfo
- Publication number
- CN2083374U CN2083374U CN 91215002 CN91215002U CN2083374U CN 2083374 U CN2083374 U CN 2083374U CN 91215002 CN91215002 CN 91215002 CN 91215002 U CN91215002 U CN 91215002U CN 2083374 U CN2083374 U CN 2083374U
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- circuit
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- line
- stereo
- plug
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Abstract
The utility model relates to a multi-purpose electronic companion, containing a hearing aid, a wireless microphone, an FM receiver, a wireless ear phone device, an anti-losing anti-theft device, a wireless intercom, and a karaoke singing exerciser, etc. The multi-purpose electronic companion comprises four unit circuits, necessary switches, socket connectors, and a power supply which are close arranged in a circuit construction and all focuses in a case whose size is a half cigarette package. The multi-purpose electronic companion can be used from children to old people in an ordinary family; the multi-purpose electronic companion is also suitable for a tour community to call memberships, and is suitable for loss protection and theft protection when individuals carry valuables on business; the utility model is suitable for teachers to have classes in a school, and is suitable for the wireless sound transmission of various occasions.
Description
The utility model relates to a kind of multifunctional electronic companion.The electronics companion has following multiple use, that is: hearing aids, wireless microphone, FM receiver, wireless earphone device, anti-anti-theft device, wireless interspeaker and the Karaoke white silk of losing sung or the like, and all above-mentioned various uses are all installed concentratedly in a small plastic box and finished.
Existing wireless interspeaker, all independent separately machines such as phonograph are practiced in hearing aids, anti-theft device, wireless earphone device, wireless microphone, FM receiver, Karaoke, the user needs several purposes need buy several machines respectively, this not only spends greatly, and goes out to carry and use also very inconvenient.
The purpose of this utility model is to provide a kind of above-mentioned various uses is combined in the very little body, price then only is equivalent to a common hearing aids, has saved many spendings to the user, and has offered the go out convenience of carrying and using of user.
The utility model is made of following part: the fm tuner circuit, power amplifier circuit, microphone and amplifier circuit thereof, the frequency modulation transmitter circuit, reception antenna, transmitting antenna, earphone, outer signal line, purposes selector switch, transmit-receive switch, output signal socket and input signal socket and the dc-battery that power supply is provided for the foregoing circuit operate as normal.Wherein, one pair of earphone on line plays a part reception antenna and transmitting antenna simultaneously, and an outer signal line is transmitting antenna simultaneously, and a socket uses for output signal socket and input signal socket simultaneously.These effective measures comprehensively be the key of the utility model success.
Below, the formation of the utility model various uses is described with reference to figure 1, Fig. 2 and Fig. 3:
Hearing aids: constitute by microphone and amplifier thereof and power amplifier, use the earphone listening.When K dials when multipurpose (opening), the ground wire of microphone and amplifier thereof and power amplifier is connected battery E negative pole by K, and the supply lines of microphone and amplifier thereof passes through K
2(2)Connect battery E positive pole, the supply lines of power amplifier is then directly connected battery E positive pole, therefore above-mentioned two circuit operate as normal.When connecting plug cord insertion stereo jack CZ with earphone shown in Figure 1, earphone just can be caught the ambient sound of being picked up by microphone, and this sound is exaggerated device and has amplified.
Wireless microphone: by microphone and amplifier and frequency modulation transmitter, transmitting antenna constitutes.K
1And K
2Be in the operating state of above-mentioned hearing aids.At this moment the ground wire of frequency modulation transmitter and supply lines pass through K respectively
1(1)And K
2(2)Connect negative pole and the positive pole of battery E, thus microphone and amplifier (shared power amplifier) thereof, each circuit operate as normal of frequency modulation transmitter.The speech that microphone picks up is delivered to frequency modulation transmitter input from the power amplifier output and is modulated (frequency modulation) after amplifying.High-frequency signal behind the frequency modulation by the transmitter output through GL
4Deliver to the 3. pin of stereo jack CZ.Referring to Fig. 1 headset plug tie as can be known, when earphone inserted C2, earphone on line (2) and (3) were exactly transmitting antenna.At this moment, earphone can be used as tin use of oneself's mirror.
FM receiver, by fm tuner, power amplifier circuit, earphone and reception antenna constitute.Work as K
1At way (opening), the K of doing more
2When receiving the position, as seen from Figure 3, has only the power supply connection of fm tuner and power amplifier circuit and operate as normal.When headset plug line shown in Figure 1 was inserted socket CZ, earphone on line (1) and (4) all were reception antennas, and wherein the signal of on line (4) reception is coupled to 1. foot of socket CZ by high frequency transformer, received next signal through C with on line (1)
RDeliver to the fm tuner input.The high-frequency signal that receives send power amplifier to amplify after the amplification of tuner high frequency, frequency conversion, intermediate frequency amplification, frequency discrimination, audio frequency amplify, the output signal of power amplifier deliver to socket CZ 2. pin for the earphone audition.
Wireless earphone device: constitute by outer signal source plug cord and frequency modulation transmitter circuit and transmitting antenna.K
1, K
2With the wireless microphone state.At this moment FM transmitter work.The plug 2 that outer signal shown in Figure 2 is connected plug cord inserts socket C2, and other end plug inserts the external signal source.If the outer signal source is stereosonic, then left and right two road signals are via two 51 Ω and become single channel to be sent to 2. pin of plug 2.Outer signal by socket CZ 2. pin through C, R, R
3C
3Add to the transmitter input and carry out the frequency modulation modulation.As seen from Figure 2, the on line of outer signal (1) is a transmitting antenna.This is to be in FM receiver work with another electronics companion just can listen to outer signal source program in 50 meters scopes around the transmitter.
The anti-anti-theft device that loses: constitute by a pair of electronics companion.One of electronics companion (first machine) puts into bag in above-mentioned wireless headset operating state together with external signal source (for example small-sized recording playback machine).Electronics companion's two (second machines) are in the FM receiver operating state.At this moment outside wireless headset is listened to, believe in the program, if have the people to attempt to steal object in bag or the bag, contain abnormal sound and pass into ear, because when the wireless headset operating state, microphone and amplifier thereof (power amplifier) are also worked simultaneously, and the abnormal sound that microphone picks up also sends simultaneously.
Wireless interspeaker: by the electronics companion is constituted.The two K
1At multipurpose (opening), K
2As the sending and receiving conversion.First speaker is with K
2Dial to sending out, the auditor is with K
2Dial to receipts.In the open space, the two can intercommunication conversation in 100 meters distances.If a pair of electronics companion's K
1All dial to transmitting-receiving position, K
2Send out the position, under noiseless situation, can carry out the intercommunication automatically of double frequency duplex; At this moment the electronics companion's four circuit are worked simultaneously.
Comprehensive above explanation, the utility model also can be expanded many purposes.
Fig. 4 is wiring and the circuit diagram of an embodiment of the present utility model.Wherein integrated circuit (1c) adopts monolithic fm tuner 1cTPA7021, constitutes the fm tuner circuit by it.MIc is an Electret condenser microphone.Crystal three utmost point affair BG
1And BG
2Constitute power amplifier and microphone amplifier circuit, transistor BG
3Constitute the frequency modulation transmitter circuit.
Referring to Fig. 4, the high-frequency signal that comes from reception antenna from socket CZ 1. pin through C
11(18PF) send into Ic high-frequency amplifier input 12 pin.The high-frequency signal untuned.C
4(variable capacitor), C
5, C
6And L
1Constitute oscillation circuit, frequency of oscillation is by C
4Regulate.High-frequency signal is after the inner frequency conversion of 1c, amplification, frequency discrimination, audio frequency amplify, and audio signal is delivered to power amplifier input (BG from the output of 14 pin
1Base stage).Microphone M1C also delivers to BG after converting the acoustical signal of picking up to the signal of telecommunication
1Base stage.Power amplifier amplifies the back from BG with microphone signal or radio receiver signal
2Collector electrode is from two tunnel outputs, that is: the one tunnel be sent to socket 2. pin give the earphone audition, another road is through R
7, C
20And C
21R
6Deliver to transmitter BG
3Base stage is modulated (frequency modulation).Note that when headset plug shown in Figure 1 inserts socket CZ BG
2The coil switch power E positive pole of collector electrode by headset earpiece; Perhaps when the plug 2 of outer signal source line shown in Figure 2 inserts socket CZ, BG
2Collector electrode by being connected across this plug 2 1. pin and 2. 100 Ω resistance energized E positive poles between pin; If socket CZ does not insert above-mentioned two kinds of plugs any, then BG
2All the time do not work, no signal is exported from collector electrode.Among Fig. 4, C
23, C
24, C
25And L
3Determine the transmission frequency of transmitter, used regulating winding L usually
3Degree of tightness change transmission frequency.Send signal and directly take from BG
3Collector electrode, through C
26With loading coil L
4The 3. pin that is sent to socket CZ sends to the space through transmitting antenna.
Among Fig. 4, two K switch
1And K
2And the circuit structure arrangement of stereo jack CZ is identical with Fig. 3.
Illustrate as seen that to sum up though the utility model purposes is a lot, circuit structure is very simple, used components and parts, raw material are and are easy to get and are convenient to process, and material cost is very low, and production technology is very easy, less investment, the income height, very suitable common factory produces in enormous quantities.
Claims (5)
1, a kind of multifunctional electronic companion, it is characterized in that described electronics companion is by a fm tuner circuit, a power amplifier circuit, microphone and amplifier circuit thereof, a frequency modulation transmitter circuit and two switches, a socket, one pair of earphone and on line thereof, an outer signal source connects plug cord, and the direct current supply battery that is contained in machine box inside is formed, through careful circuit structure arrangement, make described electronics companion include following multiple use, that is: hearing aids, wireless microphone, FM receiver, wireless earphone device, the anti-anti-theft device that loses, wireless interspeaker and Karaoke are practiced and are sung etc.
2, electronics companion according to claim 1 is characterized in that, described fm tuner circuit is made of an integrated circuit TDA7021; Described power amplifier circuit is made of two transistors; Described microphone and amplifier circuit thereof are made of an Electret condenser microphone and above-mentioned two transistors that are used as power amplifier; Described frequency modulation transmitter circuit is connected into capacitance three-point type hyperfrequency oscillating circuit by a hyperfrequency transistor and constitutes; Described two switches, wherein one is two cutter three-position switch (called after K
1) contacting conversion by making leaf spring with printed wire copper pool, another is two P cocks of common two cuttves (name K
2); A described socket is general 3.5mm stereo jack; Described one pair of earphone and on line thereof are the normal stereo earphone, comprise a 3.5mm stereo plug, the on line between headset earpiece and plug and the receiver; Described outer signal source connects plug cord, comprises two 3.5mm stereo plugs, three resistance and connect a single core audio frequency shielding conductor of two plugs; Described supplying cell is No. 7 batteries of two joints; Described machine box is the plastics machine box of half cigarette package box size.
3, electronics companion according to claim 2 is characterized in that, in the circuit structure of described stereo jack and earphone and on line thereof, and the 3. foot meridian capacitor Cr of stereo jack and loading coil L
4Connect described frequency modulation transmitter circuit, 1. pin 2. pin receive anode and power amplifier through high frequency transformer B respectively; Wherein, the earphone on line (1) of earphone and tie thereof connects 1. pin of stereo plug, and on line (4) connects 2. pin of stereo plug, and tie (3), (4) are received 3. pin of stereo plug simultaneously.
4, electronics companion according to claim 2, it is characterized in that, described outer signal source connects in the circuit structure of plug cord, 1. pin and the 2. pin that connects the stereo plug 1 of signal source connects behind one 51 Ω resistance respectively and the 2. pin use tie together and receive the stereo plug 2 of stereo jack links, external shield line two ends of tie then are connected to the 3. pin of stereo plug 1 and the 1. pin of stereo plug 2 respectively, stereo plug 2 1., 2. connect one 100 Ω resistance between the pin, 1., 2. meet a 10PF capacitor C c between the pin.
5, electronics companion according to claim 1 is characterized in that, described fm tuner circuit, power amplifier circuit, microphone and amplifier circuit thereof, frequency modulation transmitter circuit and two switch (K
1, K
2), socket, direct current supply battery, in the draw bail between them, heavy line is represented circuit ground and battery cathode line, fine line is represented anode line and the positive electric wire of circuit, dotted line representation signal tie, wherein, C
RFor the fm tuner input to the coupling capacitance between the reception antenna, C is that the frequency modulation transmitter is to the coupling capacitance between the transmitting antenna, R
1C
1, R
2C
2, R
3C
3All be the treble boost network, C is a partiting dc capacitor, and R prevents frequency modulation transmitter nonoscillatory resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215002 CN2083374U (en) | 1991-01-02 | 1991-01-02 | Multi-purpose electronic companion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215002 CN2083374U (en) | 1991-01-02 | 1991-01-02 | Multi-purpose electronic companion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2083374U true CN2083374U (en) | 1991-08-21 |
Family
ID=4923140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91215002 Pending CN2083374U (en) | 1991-01-02 | 1991-01-02 | Multi-purpose electronic companion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2083374U (en) |
-
1991
- 1991-01-02 CN CN 91215002 patent/CN2083374U/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Shengchang Document name: Notice of grant of patent |
|
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |