CN2241949Y - Transmitter - Google Patents
Transmitter Download PDFInfo
- Publication number
- CN2241949Y CN2241949Y CN 95219449 CN95219449U CN2241949Y CN 2241949 Y CN2241949 Y CN 2241949Y CN 95219449 CN95219449 CN 95219449 CN 95219449 U CN95219449 U CN 95219449U CN 2241949 Y CN2241949 Y CN 2241949Y
- Authority
- CN
- China
- Prior art keywords
- capacitor
- triode
- resistance
- mains switch
- utility
- Prior art date
- 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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- Transmitters (AREA)
Abstract
The utility model relates to a radio transmitter, which can be arranged on an audition device, and can transmit the signal received by a receiver, such as a frequency modulation radio. The utility model comprises two triodes and a plurality of resistor capacitor units. The tapping of an induction coil is used to connect a capacitor in series to an antenna to transmit the signal. The utility model has the advantages of simplicity, and reliability. Under the precondition of not affecting the other people, the utility model can meet the personal audio-visual requirement.
Description
A kind of transmitter, especially a kind of transmitting set that is installed on the audio-visual equipment are established and arrived to the utility model.
In general, the earphone that the sound-producing device of television set, recorder, sound equipment etc. adopts loud speaker or wears, when these audio-visual equipment are used in individual demand alone, when being reluctant maybe can not disturb others, unique method just is to use earphone, but earphone is subjected to the restriction of line, brings many inconvenience, short as line, see that TV affects one's power of vision or the like.
The purpose of this utility model just provides a kind of transmitting set, and it can be launched can be for the signal of broadcast receiver reception.
For finishing above purpose, the utility model comprises first capacitor.One end is connected to the negative pole of power supply, the other end is connected to an end of mains switch, one end of first resistance is connected to an end of mains switch, the other end connects an end of the input and second capacitor, the other end of second capacitor is connected to an end of second resistance and the base stage of triode, the other end of second resistance is connected to an end of the 3rd resistance, one end of the collector electrode of triode and the 3rd capacitor, the other end of the 3rd resistance is connected to an end of mains switch, the emitter of triode is connected to power cathode, the other end of the 3rd capacitor is connected to an end of the 4th resistance, one end of the 4th electric capacity and the base stage of another triode, the emitter of this triode is connected to the 5th resistance and connects power cathode, the 6th electric capacity is connected across between the emitter and collector of this triode, the 5th capacitor and an inductance coil parallel connection, their end is connected to the collector electrode of above-mentioned triode, the other end is connected to an end of mains switch, the tap of inductance coil the 9th capacitor of connecting is connected to antenna, the the 7th and the 8th capacitor is attempted by on the power supply, and the positive pole of power supply is connected to the other end of mains switch.
The utlity model has on the structure simply, cost is low, and practical characteristics are utilized transmitting set of the present utility model, can satisfy an individual human needs, leave others again alone.
Description of drawings is as follows:
Accompanying drawing is the circuit theory diagrams of the utility model one most preferred embodiment.
Now with reference to the accompanying drawings, further specify the utility model.
Capacitor C
1One end is connected to power cathode, and the other end is connected on the end 1 of mains switch SA, resistance R
1With capacitor C
2Link to each other and as the input of transmitting set, signal is through capacitor C
2Enter triode VT
1Base stage, resistance R
2Be connected across triode VT
1Collector electrode and base stage between, triode VT
1Grounded emitter, triode VT
1Collector electrode through resistance R
3Receive an end of mains switch, simultaneously through capacitor C
3Be connected to another triode VT
2Base stage, triode VT
2Base stage through capacitor C
4Connect power cathode, through resistance R
4Connect an end 1 of mains switch, triode VT
2Emitter through resistance R
5Connect power cathode, capacitor C
6Be connected across above-mentioned triode VT
2Collector and emitter between, capacitor C
5Be connected in triode VT in parallel with inductance coil L
2Collector electrode and the end 1 of mains switch SA between, the centre tap of inductance coil L connects antennas, capacitor C through electric capacity 9
7, C
8Power supply G is connected in parallel.
Can adjust capacitor C
5, R
4, R
5Value constitute different tranmitting frequencies, capacitor C
5Also can adopt variable capacitor, but must debug in advance, satisfy the condition of acceptance of receiver, receiver can be any general receiver, as a kind of FM receiver.
Owing to do not have line between receiver and the transmitter, can use small and exquisite broadcast receiver to receive and transmit away from this machine, reach the purpose of this utility model.This transmitter can be directly installed on the audio-visual equipment, also can use as annex.
Claims (1)
1, a kind of transmitting set, its feature is comprising the first capacitor (C
1), its end be connected to power supply negative pole, the other end is connected to an end (1) of mains switch (SA), the first resistance (R
1) end end (1), the other end that are connected to mains switch (SA) connect the input (A) and the second capacitor (C
2) an end, the second capacitor (C
2) the other end be connected to the second resistance (R
2) an end and triode (VT
1) base stage, the second resistance (R
2) the other end be connected to the 3rd resistance (R
3) an end, triode (VT
1) collector electrode and the 3rd capacitor (C
3) an end, the 3rd resistance (R
3) the other end be connected to the end (1) of mains switch (SA), triode (VT
1) emitter be connected to power cathode, the 3rd capacitor (C
3) the other end be connected to the 4th resistance (R
4) an end, the 4th electric capacity (C
4) an end and another triode (VT
2) base stage, triode (VT
2) emitter through the 5th resistance (R
5) the connection power cathode, the 6th electric capacity (C
6) be connected across triode (VT
2) emitter and collector between, the 5th electric capacity (C
5) and inductance coil (L) parallel connection, an end is connected to triode (VT
2) collector electrode, the other end is connected to an end (1) of mains switch, the tap of inductance coil is connected to antenna through the 9th capacitor, the 7th and the 8th capacitor is attempted by on the power supply, the positive pole of power supply is connected to the other end (2) of mains switch (SA).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219449 CN2241949Y (en) | 1995-08-16 | 1995-08-16 | Transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95219449 CN2241949Y (en) | 1995-08-16 | 1995-08-16 | Transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2241949Y true CN2241949Y (en) | 1996-12-04 |
Family
ID=33867650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95219449 Expired - Fee Related CN2241949Y (en) | 1995-08-16 | 1995-08-16 | Transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2241949Y (en) |
-
1995
- 1995-08-16 CN CN 95219449 patent/CN2241949Y/en not_active Expired - Fee Related
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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 |