CN203225738U - Small-power high-frequency transmitting circuit used for acoustic wave transmitter - Google Patents
Small-power high-frequency transmitting circuit used for acoustic wave transmitter Download PDFInfo
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- CN203225738U CN203225738U CN 201320199289 CN201320199289U CN203225738U CN 203225738 U CN203225738 U CN 203225738U CN 201320199289 CN201320199289 CN 201320199289 CN 201320199289 U CN201320199289 U CN 201320199289U CN 203225738 U CN203225738 U CN 203225738U
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Abstract
The utility model discloses a small-power high-frequency transmitting circuit used for an acoustic wave transmitter. The small-power high-frequency transmitting circuit includes a microphone, a first inductor, a second inductor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first triode, a second triode, and an antenna; a power source input end is connected with a first end of the first capacitor, a first end of the first resistor, the first end of the second resistor, a first end of the third resistor and a first end of the first inductor respectively. According to shortcomings in the prior art, the mall-power high-frequency transmitting circuit is designed; and the mall-power high-frequency transmitting circuit is advantageous in large modulation depth, small distortion, long transmission distance, stable working, simplicity, easiness in manufacture and great value in popularization.
Description
Technical field
The utility model relates to a kind of pinger, relates in particular to a kind of small-power high frequency transmission circuit for pinger.
Background technology
Sonic generator is commonly referred to sound wave electronic box, sound source, sound wave power supply.Its effect is that the civil power (220V or 380V, 50 or 60Hz) us converts the high-frequency ac signal of telecommunication that is complementary with acoustic wave transducer to.From the amplifying circuit form, can adopt linear amplifier circuit and switching power circuit, high-power sound wave power supply is considered the general circuit form that adopts Switching Power Supply from the conversion efficiency aspect.Linear power supply also has its distinctive range of application, and its advantage is not to be strict with the circuit coupling, allows operating frequency to change fast continuously.
There is the problem of transmitting range weak point and job insecurity mostly in pinger now.
The utility model content
The purpose of this utility model with regard to be to provide in order to address the above problem a kind of simple in structure, transmitting range far away and the small-power high frequency transmission circuit that is used for pinger of working stability.
In order to achieve the above object, the utility model has adopted following technical scheme:
The small-power high frequency transmission circuit that is used for pinger, comprise microphone, first inductance, second inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, first triode, second triode and antenna, described power input respectively with first end of described first electric capacity, first end of described first resistance, first end of described second resistance, first end of described the 3rd resistance is connected with first end of described first inductance, second end of described first resistance is connected with first end of described microphone and first end of described second electric capacity respectively, second end of described second electric capacity is connected with second end of described second resistance and the base stage of described first triode respectively, second end of described microphone, the emitter of described first triode, second end of described the 5th resistance, the positive pole of described diode, second end of described the 3rd electric capacity, second end of the emitter of described second triode and described the 6th electric capacity is connected back ground connection, the collector electrode of described first triode is connected with second end of described the 3rd resistance and first end of described the 4th resistance respectively, second end of described the 4th resistance respectively with first end of described the 5th resistance, first end of the negative pole of described diode and described the 7th electric capacity is connected, second end of described the 7th electric capacity respectively with second end of described the 4th electric capacity, first end of described the 3rd electric capacity, second end of described the 6th resistance is connected with the base stage of described second triode, described antenna respectively with second end of described first inductance, first end of described the 4th electric capacity, first end of described the 5th electric capacity is connected with first end of described second inductance, first end of described the 6th electric capacity respectively with second end of described the 5th electric capacity, first end of described the 6th resistance, second end of described second inductance is connected with the collector electrode of described second triode.
The beneficial effects of the utility model are:
The utility model is used for the small-power high frequency transmission circuit of pinger, at the shortcoming of prior art, has designed a kind of small-power high frequency transmission circuit, the advantage that have that modulation degree is dark, distortion is little, transmission range is far away, working stability, circuit is simple and easy to make.
Description of drawings
Fig. 1 is circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the small-power high frequency transmission circuit of the utility model pinger, comprise microphone BM, first inductance L 1, second inductance L 2, first capacitor C 1, second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the 6th capacitor C 6, the 7th capacitor C 7, first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the first triode VT1, second triode VT2 and the antenna, power input respectively with first end of first capacitor C 1, first end of first resistance R 1, first end of second resistance R 2, first end of the 3rd resistance R 3 is connected with first end of first inductance L 1, second end of first resistance R 1 is connected with first end of microphone BM and first end of second capacitor C 2 respectively, second end of second capacitor C 2 is connected with second end of second resistance R 2 and the base stage of the first triode VT1 respectively, second end of microphone BM, the emitter of the first triode VT1, second end of the 5th resistance R 5, the positive pole of diode D, second end of the 3rd capacitor C 3, second end of the emitter of the second triode VT2 and the 6th capacitor C 6 is connected back ground connection, the collector electrode of the first triode VT1 is connected with second end of the 3rd resistance R 3 and first end of the 4th resistance R 4 respectively, second end of the 4th resistance R 4 respectively with first end of the 5th resistance R 5, the negative pole of diode D is connected with first end of the 7th capacitor C 7, second end of the 7th capacitor C 7 respectively with second end of the 4th capacitor C 4, first end of the 3rd capacitor C 3, second end of the 6th resistance R 6 is connected with the base stage of the second triode VT2, antenna respectively with second end of first inductance L 1, first end of the 4th capacitor C 4, first end of the 5th capacitor C 5 is connected with first end of second inductance L 2, first end of the 6th capacitor C 6 respectively with second end of the 5th capacitor C 5, first end of the 6th resistance R 6, second end of second inductance L 2 is connected with the collector electrode of the second triode VT2.
Use the utility model as follows for the operation principle of the small-power high frequency transmission circuit of pinger:
The first triode VT1 and the second triode VT2 adopt special-purpose radio-frequency transmitting tube T2, circuit also has its outer assembly to form, frequency is at 88-108MHZ, the high-frequency generator in the scope, and the picked up audio signals low frequency signal after T1 amplifies is earlier modulated high frequency carrier again.
Radio-frequency transmissions pipe T2, its model FF501 adopts the T0-92 encapsulation of standard.The advantage of dedicated pipe is exactly high conformity, radio frequency power output is bigger, circuit is adjusted easily, FF501 can be operated in higher frequency range fully, the enamelled wire of second inductance L, 2 usefulness φ 1.0mm in the circuit elongates to 0.8cm around 5 circle tread flakings on the drill bit of φ 5.1mm, the 3rd capacitor C 3 to the 7th capacitor C 7 can be used the high frequency Leaded Ceramic Disc Capacitor, power on after antenna holder is good again.Not in the 88-108MHZ scope, can suitably adjust the length of second inductance L 2 as tranmitting frequency, after circuit is debug, effectively transmit radius and can reach 500 meters.
Claims (1)
1. small-power high frequency transmission circuit that is used for pinger, it is characterized in that: comprise microphone, first inductance, second inductance, first electric capacity, second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, first resistance, second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, first triode, second triode and antenna, described power input respectively with first end of described first electric capacity, first end of described first resistance, first end of described second resistance, first end of described the 3rd resistance is connected with first end of described first inductance, second end of described first resistance is connected with first end of described microphone and first end of described second electric capacity respectively, second end of described second electric capacity is connected with second end of described second resistance and the base stage of described first triode respectively, second end of described microphone, the emitter of described first triode, second end of described the 5th resistance, the positive pole of described diode, second end of described the 3rd electric capacity, second end of the emitter of described second triode and described the 6th electric capacity is connected back ground connection, the collector electrode of described first triode is connected with second end of described the 3rd resistance and first end of described the 4th resistance respectively, second end of described the 4th resistance respectively with first end of described the 5th resistance, first end of the negative pole of described diode and described the 7th electric capacity is connected, second end of described the 7th electric capacity respectively with second end of described the 4th electric capacity, first end of described the 3rd electric capacity, second end of described the 6th resistance is connected with the base stage of described second triode, described antenna respectively with second end of described first inductance, first end of described the 4th electric capacity, first end of described the 5th electric capacity is connected with first end of described second inductance, first end of described the 6th electric capacity respectively with second end of described the 5th electric capacity, first end of described the 6th resistance, second end of described second inductance is connected with the collector electrode of described second triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199289 CN203225738U (en) | 2013-04-19 | 2013-04-19 | Small-power high-frequency transmitting circuit used for acoustic wave transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199289 CN203225738U (en) | 2013-04-19 | 2013-04-19 | Small-power high-frequency transmitting circuit used for acoustic wave transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203225738U true CN203225738U (en) | 2013-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320199289 Expired - Fee Related CN203225738U (en) | 2013-04-19 | 2013-04-19 | Small-power high-frequency transmitting circuit used for acoustic wave transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203225738U (en) |
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2013
- 2013-04-19 CN CN 201320199289 patent/CN203225738U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20140419 |