CN209184590U - A kind of low-frequency electronic communication system - Google Patents
A kind of low-frequency electronic communication system Download PDFInfo
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- CN209184590U CN209184590U CN201920231916.6U CN201920231916U CN209184590U CN 209184590 U CN209184590 U CN 209184590U CN 201920231916 U CN201920231916 U CN 201920231916U CN 209184590 U CN209184590 U CN 209184590U
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Abstract
The utility model discloses a kind of low-frequency electronic communication systems, including server and signal projector, low-frequency signal processing module is set between server and signal projector, low-frequency signal processing module includes filter circuit, quick amplifying circuit and power amplifier, the signal that filter circuit exports server is handled, the output signal of server is subjected to LC filtering using pi type filter principle, sufficiently reduce the interference that extraneous high frequency spurs transmit signal, transport and placing device A1 in quick amplifying circuit, A2 constitutes composite operation amplifier, metal-oxide-semiconductor Q1 carries out the improvement in temperature characterisitic to the output signal of transport and placing device A1, further prevent external interference, capacitor C4, C5 plays the role of eliminating High-frequency Interference in the amplification process of composite operation amplifier, both the transmission efficiency of signal had been improved, it avoids well again The interference of internal system greatly improves the accuracy of low-frequency electronic communication system.
Description
Technical field
The utility model relates to electronic communication technology fields, more particularly to a kind of low-frequency electronic communication system.
Background technique
With the continuous development of low-frequency electronic mechanics of communication, the life of the appearance of more and more low-frequency electronic equipment to people
Living to bring very big convenience, low-frequency electronic communication also plays the role of critically important in telecommunication and subsurface communication.Low frequency
Electrical communication system is mainly made of communication server and signal projector, server by by pre-set instruction or
Data information is sent into signal projector after being handled, and is launched by signal projector, to reach telecommunication
Purpose.Since there are many influence factor in low frequency signal communication process, such as the high frequency components of extraneous noise jamming, internal system
Deng can all be affected to the accuracy of low-frequency electronic communication system.
So the utility model provides the new scheme of one kind to solve the problems, such as this.
Utility model content
For above situation, for the defect for overcoming the prior art, the utility model is designed to provide a kind of low-frequency electrical
Sub- communication system.
Its technical solution solved is: a kind of low-frequency electronic communication system, including server and signal projector, the clothes
It is engaged in that low-frequency signal processing module is arranged between device and signal projector, the low-frequency signal processing module includes filter circuit, fast
Fast amplifying circuit and power amplifier, the filter circuit input terminal connection server signal output end, filter circuit it is defeated
Outlet connects the input terminal of quick amplifying circuit, the input terminal of the output end connection power amplifier of quick amplifying circuit, power amplifier electricity
The output end connection signal transmitter on road；The quick amplifying circuit includes transport and placing device A1, A2, the output end connection of transport and placing device A1
The grid of metal-oxide-semiconductor Q1, and pass through the non-inverting input terminal of capacitor C3 connection transport and placing device A1, the drain electrode connection+12V power supply of metal-oxide-semiconductor Q1,
The source electrode of metal-oxide-semiconductor Q1 connects one end of resistance R2, capacitor C4, the other end ground connection of resistance R2, capacitor C4, the reverse phase of transport and placing device A2
Input terminal passes through the non-inverting input terminal of resistance R3 connection transport and placing device A1, and is grounded by capacitor C5, the homophase input of transport and placing device A2
End passes through the output end of resistance R4 connection transport and placing device A2 and one end of resistance R5.
Preferably, the filter circuit includes resistance R1, the signal output end and electricity of one end connection server of resistance R1
Hold one end of C1, inductance L1, the other end ground connection of resistance R1, one end of the other end connection capacitor C2 of inductance L1 and transport and placing device A1
Inverting input terminal, capacitor C1, C2 the other end ground connection.
Preferably, the power amplifier includes triode VT1, VT2, and the emitter of triode VT2 connects the one of capacitor C4
End, the collector of triode VT2 connect the other end of resistance R5, the collector connection of triode VT1 with the base stage of triode VT1
One end of resistance R6, the emitter of triode VT1 connect the cathode and capacitor of zener diode DZ1 with the base stage of triode VT2
One end of C6, the other end of resistance R6 and the anode earth of zener diode DZ1, the other end connection signal hair of capacitor C6
Emitter.
By above technical scheme, the utility model has the following beneficial effects:
1. the utility model circuit design is simply ingenious, it can effectively eliminate extraneous noise jamming, avoid internal system
High frequency components improve the accuracy of low-frequency electronic communication system well, have good Development volue and use value；
2.MOS pipe Q1 carries out the improvement in temperature characterisitic to the output signal of transport and placing device A1, further prevents external interference,
Capacitor C4, C5 play the role of eliminating High-frequency Interference in the amplification process of composite operation amplifier, have both improved the biography of signal
Efficiency is passed, and avoids the interference of internal system well；
3. the signal that filter circuit exports server is handled, using pi type filter principle by the output of server
Signal carries out LC filtering, sufficiently reduces the interference that extraneous high frequency spurs transmit signal.
Detailed description of the invention
Fig. 1 is the low-frequency signal processing module map of the utility model.
Fig. 2 is the circuit diagram of the utility model.
Specific embodiment
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
A kind of low-frequency electronic communication system, including server and signal projector E1, server and signal projector E1 it
Between low-frequency signal processing module is set, low-frequency signal processing module includes filter circuit, quick amplifying circuit and power amplifier, filter
The signal output end of the input terminal connection server of wave circuit, the output end of filter circuit connect the input of quick amplifying circuit
End, the input terminal of the output end connection power amplifier of quick amplifying circuit, the output end connection signal transmitter E1 of power amplifier.
The signal that filter circuit exports server first is handled, and filter circuit includes resistance R1, and the one of resistance R1
The signal output end of end connection server and one end of capacitor C1, inductance L1, the other end ground connection of resistance R1, inductance L1's is another
One end of end connection capacitor C2 and the inverting input terminal of transport and placing device A1, the other end ground connection of capacitor C1, C2.Wherein inductance L1, electricity
Hold C1, C2 and form pi type filter, the output signal of server is subjected to LC filtering, sufficiently reduces extraneous high frequency spurs to signal
The interference of transmission.
It may be subjected to the height of internal system generation during transferring signals to signal projector E1 due to server
Frequency disturbance designs quick amplifying circuit handled in amplification process signal.Quick amplifying circuit includes amplifier
Device A1, A2, the grid of the output end connection metal-oxide-semiconductor Q1 of transport and placing device A1, and pass through the homophase input of capacitor C3 connection transport and placing device A1
End, the drain electrode connection+12V power supply of metal-oxide-semiconductor Q1, the source electrode of metal-oxide-semiconductor Q1 connect one end of resistance R2, capacitor C4, resistance R2, capacitor
The other end of C4 is grounded, and the inverting input terminal of transport and placing device A2 passes through the non-inverting input terminal of resistance R3 connection transport and placing device A1, and passes through
The non-inverting input terminal of capacitor C5 ground connection, transport and placing device A2 passes through the output end of resistance R4 connection transport and placing device A2 and one end of resistance R5.
Wherein transport and placing device A1, A2 constitutes composite operation amplifier, quickly puts accordingly for decaying progress of the signal in transmission process
Greatly, capacitor C3 guarantees the stability in signal amplification process, and metal-oxide-semiconductor Q1 carries out in temperature characterisitic the output signal of transport and placing device A1
Improvement, further prevent external interference, capacitor C4, C5 play that eliminate high frequency dry in the amplification process of composite operation amplifier
The effect disturbed not only had improved the transmission efficiency of signal, but also avoided the interference of internal system well, greatly improved low-frequency electrical
The accuracy of sub- communication system.
Triode VT1, VT2 forms combination power tube and carries out power to the output signal of quick amplifying circuit in power amplifier
Amplification, to reach the transmission power of signal projector E1.One end of the emitter connection capacitor C4 of triode VT2, triode VT2
Collector connect the other end of resistance R5 with the base stage of triode VT1, the one of the collector connection resistance R6 of triode VT1
End, the emitter of triode VT1 connect the cathode of zener diode DZ1 and one end of capacitor C6 with the base stage of triode VT2, electricity
Hinder the other end of R6 and the anode earth of zener diode DZ1, the other end connection signal transmitter E1 of capacitor C6.Wherein
Zener diode DZ1 carries out pressure stabilizing to the signal after power amplifier, guarantees the stability of signal transmitting.
When specifically used, the signal that filter circuit exports server first is handled the utility model, utilizes π type
The output signal of server is carried out LC filtering by Filter Principle, sufficiently reduces the interference that extraneous high frequency spurs transmit signal.
Secondly, quickly transport and placing device A1, A2 constitute composite operation amplifier in amplifying circuit, for decaying of the signal in transmission process into
The corresponding quickly amplification of row, capacitor C3 guarantee the stability in signal amplification process, output signal of the metal-oxide-semiconductor Q1 to transport and placing device A1
The improvement in temperature characterisitic is carried out, further prevents external interference, capacitor C4, C5 are in the amplification process of composite operation amplifier
Play the role of eliminating High-frequency Interference, not only improved the transmission efficiency of signal, but also avoid the interference of internal system well, greatly
The accuracy for improving low-frequency electronic communication system.Finally, triode VT1, VT2 forms combination power tube pair in power amplifier
The output signal of quick amplifying circuit carries out power amplification, to reach the transmission power of signal projector E1.
In conclusion the utility model circuit design is simply ingenious, it can effectively eliminate extraneous noise jamming, avoid system
Internal high frequency components, improve the accuracy of low-frequency electronic communication system well, have good Development volue and use
Value.
The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in
Within scope of protection of the utility model.
Claims (3)
1. a kind of low-frequency electronic communication system, including server and signal projector, it is characterised in that: the server and signal
Low-frequency signal processing module is set between transmitter, and the low-frequency signal processing module includes filter circuit, quick amplifying circuit
And power amplifier, the signal output end of the input terminal connection server of the filter circuit, the output end connection of filter circuit are fast
The input terminal of fast amplifying circuit, the input terminal of the output end connection power amplifier of quick amplifying circuit, the output end of power amplifier
Connection signal transmitter；
The quick amplifying circuit includes transport and placing device A1, A2, and the output end of transport and placing device A1 connects the grid of metal-oxide-semiconductor Q1, and passes through
The source electrode of the non-inverting input terminal of capacitor C3 connection transport and placing device A1, the drain electrode connection+12V power supply of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q1 connects electricity
One end of R2, capacitor C4, the other end ground connection of resistance R2, capacitor C4 are hindered, the inverting input terminal of transport and placing device A2 is connected by resistance R3
The non-inverting input terminal of transport and placing device A1 is connect, and is grounded by capacitor C5, the non-inverting input terminal of transport and placing device A2 is transported by resistance R4 connection
Put the output end of device A2 and one end of resistance R5.
2. low-frequency electronic communication system according to claim 1, it is characterised in that: the filter circuit includes resistance R1,
The signal output end of one end connection server of resistance R1 and one end of capacitor C1, inductance L1, the other end ground connection of resistance R1, electricity
Feel one end of the other end connection capacitor C2 of L1 and the inverting input terminal of transport and placing device A1, the other end ground connection of capacitor C1, C2.
3. low-frequency electronic communication system according to claim 2, it is characterised in that: the power amplifier includes triode
VT1, VT2, one end of the emitter connection capacitor C4 of triode VT2, the collector of triode VT2 and the base stage of triode VT1
Connect the other end of resistance R5, one end of the collector connection resistance R6 of triode VT1, the emitter of triode VT1 and three poles
The cathode of the base stage connection zener diode DZ1 of pipe VT2 and one end of capacitor C6, the other end and zener diode of resistance R6
The anode earth of DZ1, the other end connection signal transmitter of capacitor C6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231916.6U CN209184590U (en) | 2019-02-25 | 2019-02-25 | A kind of low-frequency electronic communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231916.6U CN209184590U (en) | 2019-02-25 | 2019-02-25 | A kind of low-frequency electronic communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209184590U true CN209184590U (en) | 2019-07-30 |
Family
ID=67379301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920231916.6U Active CN209184590U (en) | 2019-02-25 | 2019-02-25 | A kind of low-frequency electronic communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209184590U (en) |
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2019
- 2019-02-25 CN CN201920231916.6U patent/CN209184590U/en active Active
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