CN206042343U - Audio switching ware control circuit - Google Patents

Abstract

The utility model discloses an audio switching ware control circuit, including triode Q1, resistance R7, electric capacity C10, emitting diode LED, inductance L1 and antenna Y, resistance R7 one end connect respectively VCC, inductance L1, electric capacity C9, electric capacity C6, electric capacity C10 and resistance R10, the electric capacity C10 other end connect electric capacity C11, the inductance L1 other end, electric capacity C8 and triode Q1 collecting electrode respectively, and inductance L4 is connected to the electric capacity C11 other end, and antenna Y is connected to the inductance L4 other end, the electric capacity C8 other end is connecting resistance R6, electric capacity C4 and triode Q1 projecting pole respectively, and triode Q1 base is the connecting resistance R10 other end, electric capacity C5 and electric capacity C2 respectively. Adopt the utility model discloses control circuit's audio switching ware, the audio output that can connect in the audio & video equipment realizes the wireless of audio frequency and forwards, receives through the receiver, can obtain voice output, prevents that direct sound reproduction from probably disturbing or influencing other people study or have a rest.

Description

A kind of audio frequency adaptor control circuit

Technical field

This utility model is related to a kind of adapter, specifically a kind of audio frequency adaptor control circuit.

Background technology

, in campus, often there are some room-mate's murder cases in modern society, and these tragedies are the reason for occur All it is because caused by the trival matters got along at ordinary times, such as, in night playing audio-video amusement work etc., being likely to become lance The fuse cord of shield；In addition, in house is lived, double the sending out of man and wife may be different to the hobby of music, if will be these music direct Play in the family, it is also possible to cause family's contradiction.So, the audio frequency adaptor with radio function, just becomes people's One selection, existing many such audio frequency adaptors, is substantially based on Bluetooth function, needs using special bluetooth core Piece, cost are at a relatively high, cause price high, and the market competitiveness is weak.

Utility model content

The purpose of this utility model is to provide a kind of audio frequency adaptor control circuit, to solve to carry in above-mentioned background technology The problem for going out.

For achieving the above object, this utility model provides following technical scheme：

A kind of audio frequency adaptor control circuit, including audion Q1, resistance R7, electric capacity C10, LED, inductance L1 and antenna Y, described resistance R7 one end connect power supply VCC, inductance L1, electric capacity C9, electric capacity C6, electric capacity C10 and resistance respectively R10, the electric capacity C10 other end connects electric capacity C11, the inductance L1 other ends, electric capacity C8 and audion Q1 colelctor electrodes, electric capacity C11 respectively The other end connects inductance L4, and inductance L4 other ends connection antenna Y, the electric capacity C8 other ends connect resistance R6, electric capacity C4 respectively With audion Q1 emitter stages, audion Q1 base stages connect the resistance R10 other ends, electric capacity C5 and electric capacity C2 respectively, and electric capacity C2 is another End connection resistance R5, resistance R5 other ends connection inductance L3, the inductance L3 other ends connect electric capacity C1, resistance R4 and resistance respectively R2, the resistance R2 other end connects audio frequency apparatus L channel outfan V1, and it is another that the resistance R4 other ends connect electric capacity C1 respectively End, inductance L2 and audio frequency apparatus R channel outfan V2, it is another that the inductance L2 other ends connect the electric capacity C5 other ends, electric capacity C4 respectively End, the resistance R6 other ends, the electric capacity C6 other ends, the electric capacity C9 other ends and LED negative pole, LED is just Pole connects the resistance R7 other ends.

As further program of the utility model：The power supply VCC adopts 3V button cells.

As this utility model further scheme：The audio frequency apparatus can be television set, computer, panel computer.

Compared with prior art, the beneficial effects of the utility model are：Using the audio conversion of this utility model control circuit Device is connect, the audio output of audio ＆ video equipment can be connected on, realize the wireless forwarding of audio frequency, received by receptor, you can To voice output, prevent direct playback from may interfere with or affect other people and learn or rest, and circuit structure is simple, cost compared with Low, the market competitiveness is strong.

Description of the drawings

Circuit diagrams of the Fig. 1 for audio frequency adaptor control circuit.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of this utility model protection.

Fig. 1 is referred to, in this utility model embodiment, a kind of audio frequency adaptor control circuit, including audion Q1, resistance R7, electric capacity C10, LED, inductance L1 and antenna Y, described resistance R7 one end connect respectively power supply VCC, inductance L1, Electric capacity C9, electric capacity C6, electric capacity C10 and resistance R10, the electric capacity C10 other ends connect electric capacity C11, the inductance L1 other ends, electric capacity respectively C8 and audion Q1 colelctor electrodes, electric capacity C11 other ends connection inductance L4, inductance L4 other ends connection antenna Y, the electric capacity C8 are another One end connects resistance R6, electric capacity C4 and audion Q1 emitter stages respectively, audion Q1 base stages connect respectively the resistance R10 other ends, Electric capacity C5 and electric capacity C2, the electric capacity C2 other end connects resistance R5, resistance R5 other ends connection inductance L3, inductance L3 other ends difference Connection electric capacity C1, resistance R4 and resistance R2, resistance R2 other ends connection audio frequency apparatus L channel outfan V1, the resistance R4 are another One end connects the electric capacity C1 other ends, inductance L2 and audio frequency apparatus R channel outfan V2 respectively, and the inductance L2 other ends connect respectively The electric capacity C5 other ends, the electric capacity C4 other ends, the resistance R6 other ends, the electric capacity C6 other ends, the electric capacity C9 other ends and light emitting diode LED negative poles, the LED positive pole connection resistance R7 other ends；The power supply VCC adopts 3V button cells；The audio frequency Equipment can be television set, computer, panel computer.

Circuit is built according to Fig. 1 parameters, audio frequency apparatus L channel outfan V1, R channel outfan V2 can be integrated in general 3.5mm headset plugs in, so go for the audio ＆ video equipment of various main flows on Vehicles Collected from Market.

Below the operation principle of this utility model circuit is illustrated, makes those skilled in the art understand that its work Mode：Fig. 1 is referred to, audio signal is exported by audio frequency apparatus L channel outfan V1, R channel outfan V2, subsequent signal Match into R2, R4 suitably decay with partial pressure, the signal on R4 is transported to Q1 etc. by C1, L3, R5, C2, L2 link again and constitutes High-frequency oscillating circuitss be modulated, the effect of the element such as C1, L3, R5, C2, L2 is that high-frequency signal is isolated, in case Q1 Partial high-frequency signal is thus outer to alter.Q1 HFSs are common base capacitance three-point type high-frequency oscillating circuitss, this circuit starting of oscillation appearance Easily, frequency height, wave distortion are little, by Q1 pipe c-e interpolar C8 electric capacity and Q1 pipes junction capacity itself and with reference to elements such as C4 electric capacity, Positive feedback network is formed, persistent oscillation is produced, and in oscillatory work, tranmitting frequency can be made stably to fall within by C10, L1 surely frequently In 88MHz～108MHz frequency ranges on certain frequency, and. oscillating tube Q1 b-e extremely on have audio signal to add, so, audio-frequency electric Pressure will to Q1 vibration be modulated, finally can the c of agitator Q1 extremely on form stronger carrier signal radiation voltage, this Afterwards, it is that the signal is radiated to into space, then the extremely coupled electric capacity C11 of c in Q1 pass through low sense coil L4, complete by collapsible mast Y Into radio-frequency transmissions.This utility model takes radiation pattern after the loading of antenna elder generation, is first that the equivalent rearrangement of L4 energy is radiated in day The distribution of radio frequency field energy electric current on line, so that shorten antenna Len req；Antenna loading in addition can also reduce antenna pair high frequency vibrating The adverse effect of device reflection is swung, so that high-frequency oscillating circuitss job stability is enhanced.

The outward appearance frame for movement of this utility model product, here are not limited, as long as can be by this utility model circuit system Into PCB be integrated in, you can.

In sum, using the audio frequency adaptor of this utility model control circuit, the audio frequency of audio ＆ video equipment can be connected on Outfan, realizes the wireless forwarding of audio frequency, is received by receptor, you can obtain voice output, prevents direct playback competent Disturb or affect other people to learn or rest.

It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms Type.

Claims (3)

1. a kind of audio frequency adaptor control circuit, including audion Q1, resistance R7, electric capacity C10, LED, inductance L1 With antenna Y, it is characterised in that described resistance R7 one end connects power supply VCC, inductance L1, electric capacity C9, electric capacity C6, electric capacity C10 respectively With resistance R10, the electric capacity C10 other ends connect electric capacity C11, the inductance L1 other ends, electric capacity C8 and audion Q1 colelctor electrodes respectively, electric Hold C11 other ends connection inductance L4, inductance L4 other ends connection antenna Y, the electric capacity C8 other ends connect resistance R6, electricity respectively Hold C4 and audion Q1 emitter stages, audion Q1 base stages connect the resistance R10 other ends, electric capacity C5 and electric capacity C2, electric capacity C2 respectively The other end connects resistance R5, and resistance R5 other ends connection inductance L3, the inductance L3 other ends connect electric capacity C1, resistance R4 and electricity respectively Resistance R2, resistance R2 other ends connection audio frequency apparatus L channel outfan V1, it is another that the resistance R4 other ends connect electric capacity C1 respectively One end, inductance L2 and audio frequency apparatus R channel outfan V2, it is another that the inductance L2 other ends connect the electric capacity C5 other ends, electric capacity C4 respectively One end, the resistance R6 other ends, the electric capacity C6 other ends, the electric capacity C9 other ends and LED negative pole, LED Positive pole connects the resistance R7 other ends.

2. audio frequency adaptor control circuit according to claim 1, it is characterised in that the power supply VCC adopts 3V buttons Battery.

3. audio frequency adaptor control circuit according to claim 1, it is characterised in that the audio frequency apparatus can be TV Mechanical, electrical brain, panel computer.