CN205265665U - Radio signal send system - Google Patents
Radio signal send system Download PDFInfo
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- CN205265665U CN205265665U CN201521108383.0U CN201521108383U CN205265665U CN 205265665 U CN205265665 U CN 205265665U CN 201521108383 U CN201521108383 U CN 201521108383U CN 205265665 U CN205265665 U CN 205265665U
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- resistance
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- triode
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- electric capacity
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Abstract
The utility model discloses a radio signal send system, including resistance R1, electric capacity C1, triode V1 and adapter B, potentiometre RP1's a stiff end is connected to adapter B's one end, and electric capacity C2, electric capacity C3, electric capacity C5, electric capacity C7, electric capacity C8, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, triode V3's collecting electrode, adapter B's the other end and transformer W's winding N2 are connected to another stiff end of potentiometre RP1. The utility model discloses radio signal send system adopts a plurality of triodes to constitute tripolar amplifier circuit and handles the audio signal who gathers, and the circuit has the high -frequency loss of compensateing and improves amplifier frequency characteristic's function simultaneously, therefore has simple structure, stable performance and convenient to use's advantage.
Description
Technical field
The utility model relates to a kind of signal transmission circuit, specifically a kind of wireless signal transmission system.
Background technology
Transmitting set is the abbreviation of frequency-modulated broadcast transmitter, be mainly used in by the voice of f-m broadcast station and music program withWireless mode is launched, any one f-m broadcast station, no matter its scale (state radio, provincial radio station, cityLevel radio station, radio station at county level, township level radio station, at village level radio station, radio station, campus, enterprises and institutions radio station, army's barracks radio station,Etc.), all will be formed by frequency/audio-frequency broadcasting control equipment, transmission equipment, frequency modulation transmitter and transmitting antenna feeder. On present marketThe most complex structure of transmitting set, volume is large, and in the process of conversion, there is larger decay and interference in less stable,Affect the quality of signal transmission.
Utility model content
The purpose of this utility model is to provide a kind of wireless signal transmission system, to solve asking of proposing in above-mentioned background technologyTopic.
For achieving the above object, the utility model provides following technical scheme:
A kind of wireless signal transmission system, comprises resistance R 1, capacitor C 1, triode V1 and sound pick-up B, described sound pick-upOne end of B connects a stiff end of potentiometer RP1, another stiff end of potentiometer RP1 connect capacitor C 2, capacitor C 3,Capacitor C 5, capacitor C 7, capacitor C 8, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10, resistance R 11,The winding N2 of the colelctor electrode of triode V3, the other end of sound pick-up B and transformer W, the sliding end of potentiometer RP1 connectsThe other end of capacitor C 1 and capacitor C 2, the other end of the other end contact resistance R1 of capacitor C 1, resistance R 12, resistance R 6With the base stage of triode V1, the other end contact resistance R2 of resistance R 1, resistance R 3, resistance R 4, resistance R 5, power supply VCCWith the other end of the winding N1 of transformer W, the other end and the capacitor C 4, three of the colelctor electrode contact resistance R2 of triode V1The other end of emitter stage contact resistance R7 of utmost point pipe V1 and the other end of capacitor C 3, the other end contact resistance R3 of capacitor C 4The other end, the other end of resistance R 8 and the base stage of triode V2, another of the colelctor electrode contact resistance R4 of triode V2End and capacitor C 6, the other end of emitter stage contact resistance R9 of triode V2 and the other end of capacitor C 5, capacitor C 6 separatelyThe base stage of the other end of one end contact resistance R5, the other end of resistance R 10 and triode V3, the emitter stage of triode V3The other end of the other end of contact resistance R11 and capacitor C 7, the other end of the winding N2 of transformer W connects antenna A and electricityHold the other end of C8.
As preferred version of the present utility model: described power supply VCC is 9V direct current.
Compared with prior art, the beneficial effects of the utility model are: the utility model wireless signal transmission system adopts multipleTriode forms three utmost point amplifying circuits to be processed the audio signal collecting, and circuit has the high-frequency loss of making up and changes simultaneouslyThe function of kind amplifier frequency characteristic, therefore has advantages of simple in structure, stable performance and easy to use.
Brief description of the drawings
Fig. 1 is the circuit diagram of wireless signal transmission system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearlyChu, intactly description, obviously, described embodiment is only the utility model part embodiment, instead of wholeEmbodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisiteThe every other embodiment obtaining, belongs to the scope that the utility model is protected.
Refer to Fig. 1, a kind of wireless signal transmission system, comprises resistance R 1, capacitor C 1, triode V1 and sound pick-up B,One end of described sound pick-up B connects a stiff end of potentiometer RP1, and another stiff end of potentiometer RP1 connects electric capacityC2, capacitor C 3, capacitor C 5, capacitor C 7, capacitor C 8, resistance R 6, resistance R 7, resistance R 8, resistance R 9, resistance R 10,The winding N2 of the colelctor electrode of resistance R 11, triode V3, the other end of sound pick-up B and transformer W, potentiometer RP1'sSliding end connects the other end of capacitor C 1 and capacitor C 2, the other end contact resistance R1 of capacitor C 1, resistance R 12, resistanceThe base stage of the other end of R6 and triode V1, the other end contact resistance R2 of resistance R 1, resistance R 3, resistance R 4, resistanceThe other end of the winding N1 of R5, power supply VCC and transformer W, the other end of the colelctor electrode contact resistance R2 of triode V1With capacitor C 4, the other end of emitter stage contact resistance R7 of triode V1 and the other end of capacitor C 3, another of capacitor C 4The other end, the other end of resistance R 8 and the base stage of triode V2 of end contact resistance R3, the colelctor electrode of triode V2 connectsThe other end of resistance R 4 and capacitor C 6, the other end of emitter stage contact resistance R9 of triode V2 and the other end of capacitor C 5,The other end, the other end of resistance R 10 and the base stage of triode V3 of the other end contact resistance R5 of capacitor C 6, triodeThe other end of emitter stage contact resistance R11 of V3 and the other end of capacitor C 7, the other end of the winding N2 of transformer W connectsThe other end of antenna A and capacitor C 8.
Power supply VCC is 9V direct current.
Operation principle of the present utility model is: microphone B picks up voice signal, and signal is added to crystalline substance after potentiometer RP1 adjustsBody pipe V1, it is a common-emitter amplifier, R4 is connected on the emitter stage of V1 as Current Negative Three-Point Capacitance resistor, for surelyDetermine dc point, C3 is decoupling capacitor, make V1 ac gain improve, triode V2 and triode V3 all form andThe amplifier that V1 is identical, thus carry out three grades of amplifications to audio signal, and audio signal is added to transformer T's after three grades of amplificationsOn armature winding N1. On antenna A, carry out wireless transmission through transformer coupled audio signal is delivered to. Transformer secondary output windingC8 is in parallel with capacitor, in order to promote high-frequency signal, makes up the high-frequency loss in Recording Process. The colelctor electrode output warp of V3R12, C9 feed back to the base stage of V1, for improving the frequency characteristic of amplifier. Increase the stability of circuit, this amplifierOutput adopts the mode of transformation can compensate high-frequency signal.
Claims (2)
1. a wireless signal transmission system, comprises resistance R 1, capacitor C 1, triode V1 and sound pick-up B, and its feature existsIn, one end of described sound pick-up B connects a stiff end of potentiometer RP1, and another stiff end of potentiometer RP1 connectsCapacitor C 2, capacitor C 3, capacitor C 5, capacitor C 7, capacitor C 8, resistance R 6, resistance R 7, resistance R 8, resistance R 9, electricityColelctor electrode, the other end of sound pick-up B and the winding N2 of transformer W of resistance R10, resistance R 11, triode V3, potentiometerThe sliding end of RP1 connects the other end of capacitor C 1 and capacitor C 2, the other end contact resistance R1 of capacitor C 1, resistance R 12,The base stage of the other end of resistance R 6 and triode V1, the other end contact resistance R2 of resistance R 1, resistance R 3, resistance R 4,The other end of the winding N1 of resistance R 5, power supply VCC and transformer W, the colelctor electrode contact resistance R2's of triode V1 is anotherOne end and capacitor C 4, the other end of emitter stage contact resistance R7 of triode V1 and the other end of capacitor C 3, capacitor C 4The base stage of the other end of other end contact resistance R3, the other end of resistance R 8 and triode V2, the colelctor electrode of triode V2The other end of contact resistance R4 and capacitor C 6, the other end of the emitter stage contact resistance R9 of triode V2 and capacitor C 5 anotherOne end, the other end, the other end of resistance R 10 and the base stage of triode V3 of the other end contact resistance R5 of capacitor C 6,The other end of emitter stage contact resistance R11 of triode V3 and the other end of capacitor C 7, the winding N2's of transformer W is anotherOne end connects the other end of antenna A and capacitor C 8.
2. according to a kind of wireless signal transmission system claimed in claim 1, it is characterized in that, described power supply VCC is that 9V is straightStream electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521108383.0U CN205265665U (en) | 2015-12-28 | 2015-12-28 | Radio signal send system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521108383.0U CN205265665U (en) | 2015-12-28 | 2015-12-28 | Radio signal send system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265665U true CN205265665U (en) | 2016-05-25 |
Family
ID=56007167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521108383.0U Expired - Fee Related CN205265665U (en) | 2015-12-28 | 2015-12-28 | Radio signal send system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205265665U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579742A (en) * | 2017-08-10 | 2018-01-12 | 江西吉斯电子科技有限公司 | A kind of new frequency modulation transmitter |
| CN109596111A (en) * | 2018-12-05 | 2019-04-09 | 柳州铁道职业技术学院 | A kind of total station for passing on a message |
| CN110161032A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of leather and fur products quality detecting system |
-
2015
- 2015-12-28 CN CN201521108383.0U patent/CN205265665U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107579742A (en) * | 2017-08-10 | 2018-01-12 | 江西吉斯电子科技有限公司 | A kind of new frequency modulation transmitter |
| CN110161032A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of leather and fur products quality detecting system |
| CN109596111A (en) * | 2018-12-05 | 2019-04-09 | 柳州铁道职业技术学院 | A kind of total station for passing on a message |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161228 |