CN205864372U - A kind of wireless device electronics frequency modulation device - Google Patents
A kind of wireless device electronics frequency modulation device Download PDFInfo
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- CN205864372U CN205864372U CN201620705088.1U CN201620705088U CN205864372U CN 205864372 U CN205864372 U CN 205864372U CN 201620705088 U CN201620705088 U CN 201620705088U CN 205864372 U CN205864372 U CN 205864372U
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- electric capacity
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- diode
- frequency modulation
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Abstract
The utility model discloses a kind of wireless device electronics frequency modulation device, including power supply, the first resistance to the 3rd resistance, the first electric capacity to the 9th electric capacity, the first inductance to the 4th inductance, variable inductance, the first diode, the second diode and audion, compared with prior art, variable inductance of the present utility model is a part for oscillator tank, change with modulated signal, loop total capacitance the most just changes with modulated signal, and frequency of oscillation also will change with modulated signal.As long as suitably choosing characteristic and the duty of variable inductance, can make change and the approximately linear relation of modulated signal of frequency of oscillation, thus realizing frequency modulation, using electronic devices and components few, with low cost, modulation effect is good, has the value of popularization and application.
Description
Technical field
This utility model relates to a kind of wireless electron frequency modulation device, particularly relates to a kind of wireless device electronics frequency modulation dress
Put.
Background technology
Frequency modulation, full name " frequency modulation(PFM) ".The instantaneous frequency making carrier wave changes according to the Changing Pattern of required transmission signal
Modulator approach.It is a kind of modulator approach making and being become with modulated signal by harmonic instantaneous frequency.Realize this modulator approach
Circuit claim frequency modulator, be widely used in the aspects such as frequency modulation broadcasting, television field frame, microwave communication, phase lock circuitry and sweep generator.Exchange
Frequently the basic demand of device is that frequency modulation frequency displacement is big, frequency modulation characteristic good, parastic modulation is little.The radio wave produced by frequency modulation method is adjusting
Frequently ripple, its basic feature is that the oscillation amplitude of carrier wave keeps constant, and frequency of oscillation becomes with modulated signal.Frequency modulation (FM), it is simply that
The frequency of high frequency carrier is not a constant, is the modulation system changed within the specific limits with modulated signal, and its amplitude is then
It it is a constant.Corresponding, amplitude modulation be exactly the frequency of carrier frequency be constant, its amplitude becomes with modulated signal.Existing skill
In art, the good equipment of effect of frequency modulation device, equipment is the highest, is unfavorable for popularizing, and is not suitable with what ordinary consumer can bear
Product, but, general product, frequency modulation poor effect, affect whole equipment, accordingly, it would be desirable to the high frequency modulation of a kind of cost performance sets
Standby.
Utility model content
The purpose of this utility model is that provides a kind of wireless device electronics frequency modulation dress to solve the problems referred to above
Put.
This utility model is achieved through the following technical solutions above-mentioned purpose:
This utility model includes that power supply, the first resistance are to the 3rd resistance, the first electric capacity to the 9th electric capacity, the first inductance to
Four inductance, variable inductance, the first diode, the second diode and audion, described power supply is 12V, the first resistance is 100 Ω,
Second resistance is 400 Ω, the 3rd resistance is 500 Ω, the first electric capacity is 300uf, the second electric capacity is 470uf, the 3rd electric capacity is
100uf, the 4th electric capacity are 1000uf, the 5th electric capacity is 10uf, the 6th electric capacity is 120uf, the 7th electric capacity is 720uf, the 8th electricity
Hold and the 9th electric capacity is 47uf, the first diode and described second diode model and is IN4001, the positive pole of described power supply
Simultaneously with the first end of described 3rd inductance, the first end of described 7th electric capacity, the first end of described 9th electric capacity and described the
First end of four inductance connects, the negative pole of described power supply simultaneously with the second end of described 9th electric capacity, described second diode
Positive pole, the first end of described 8th electric capacity, the second end of described 7th electric capacity, the first end of described 5th electric capacity, the described 3rd
First end of electric capacity, the first end of described 3rd resistance, the first end of described first electric capacity and the first end of described second resistance
Connecting, the second end of described 3rd inductance is connected with the first end of described first resistance, and the second end of described first resistance is simultaneously
It is connected with the base stage of the second end of described second resistance, the second end of described first electric capacity and described audion, described audion
Emitter stage be connected with the first end of the first end of described first inductance and described 4th electric capacity simultaneously, the of described 4th electric capacity
Two ends are the outfan of described electronics frequency modulation device, and the second end of described first inductance connects with the second end of described 3rd resistance
Connect, the colelctor electrode of described audion simultaneously with the first end of described second electric capacity, the first end of described variable inductance and described the
Six electric capacity first end connect, the second end of described second electric capacity is connected with the second end of described 3rd electric capacity, described can power transformation
Sense the second end be connected with the second end of described 5th electric capacity, described 6th electric capacity second end while with described second inductance
The positive pole of the first end and described first diode connects, and the second end of described second inductance connects with the second end of described 8th electric capacity
Connecing, the negative pole of described first diode is connected with the second end of the negative pole of described second diode and described 4th inductance simultaneously.
The beneficial effects of the utility model are:
This utility model is a kind of wireless device electronics frequency modulation device, compared with prior art, of the present utility model can
Power transformation sense is a part for oscillator tank, changes with modulated signal, and loop total capacitance the most just changes with modulated signal, shakes
Swing frequency also to change with modulated signal.As long as suitably choosing characteristic and the duty of variable inductance, frequency of oscillation can be made
Change and the approximately linear relation of modulated signal, thus realize frequency modulation, use electronic devices and components few, with low cost, modulation effect
Good, there is the value of popularization and application.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1: this utility model includes power supply SC, the first resistance R1 to the 3rd resistance R3, the first electric capacity C1 to
Nine electric capacity C9, the first inductance L1 to the 4th inductance L4, variable inductance RL, the first diode D1, the second diode D2 and audion
VT, power supply DC are 12V, the first resistance R1 is 100 Ω, the second resistance R2 is 400 Ω, the 3rd resistance R3 is 500 Ω, the first electric capacity
C1 is 300uf, the second electric capacity C2 is 470uf, the 3rd electric capacity C3 is 100uf, the 4th electric capacity C4 is 1000uf, the 5th electric capacity C5 is
10uf, the 6th electric capacity C6 are 120uf, the 7th electric capacity C7 is 720uf, the 8th electric capacity C8 and the 9th electric capacity C9 is 47uf, first
Diode D1 and the second diode D2 model be the positive pole of IN4001, power supply DC simultaneously with first end of the 3rd inductance L3, the
First end of first end of seven electric capacity C7, first end of the 9th electric capacity C9 and the 4th inductance L4 connects, and the negative pole of power supply DC is simultaneously
With second end of the 9th electric capacity C9, the positive pole of the second diode D2, first end of the 8th electric capacity C8, the second of the 7th electric capacity C7
End, first end of the 5th electric capacity C5, first end of the 3rd electric capacity C3, first end of the 3rd resistance R3, the first of the first electric capacity C1
First end of end and the second resistance R2 connects, and second end of the 3rd inductance L3 and first end of the first resistance R1 connect, the first electricity
Second end of resistance R1 is connected with the base stage of the second end, second end of the first electric capacity C1 and the audion VT of the second resistance R2 simultaneously,
The emitter stage of audion VT is connected with first end of the first inductance L1 and first end of the 4th electric capacity C4 simultaneously, the 4th electric capacity C4's
Second end is the outfan OUT of electronics frequency modulation device, and second end of the first inductance L1 and second end of the 3rd resistance R3 connect, three
The colelctor electrode of pole pipe VT even with first end of the second electricity first end of C2, first end of variable inductance RL and the 6th electric capacity C6 simultaneously
Connecing, second end of the second electric capacity C2 and second end of the 3rd electric capacity C3 connect, second end of variable inductance RL and the 5th electric capacity C5
The second end connect, second end of the 6th electric capacity C6 is simultaneously with the positive pole of first end of the second inductance L2 and the first diode D1 even
Connecing, second end of the second inductance L2 and second end of the 8th electric capacity C8 connect, and the negative pole of the first diode D1 is simultaneously with the two or two
The negative pole of pole pipe D2 and second end of the 4th inductance L4 connect.
Variable inductance RL is a part for oscillator tank, changes with modulated signal, and loop total capacitance is the most just with tune
Signal intensity processed, frequency of oscillation also will change with modulated signal.As long as suitably choosing characteristic and the duty of variable inductance RL,
Change and the approximately linear relation of modulated signal of frequency of oscillation can be made, thus realize frequency modulation.The wink of variable inductance RL frequency modulator
Time frequency and modulation voltage relation determined by oscillation circuit.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (1)
1. a wireless device electronics frequency modulation device, it is characterised in that: include power supply, the first resistance to the 3rd resistance, first
Electric capacity is to the 9th electric capacity, the first inductance to the 4th inductance, variable inductance, the first diode, the second diode and audion, described
Power supply is 12V, the first resistance is 100 Ω, the second resistance is 400 Ω, the 3rd resistance is 500 Ω, the first electric capacity is 300uf,
Two electric capacity are 470uf, the 3rd electric capacity is 100uf, the 4th electric capacity is 1000uf, the 5th electric capacity is 10uf, the 6th electric capacity is
120uf, the 7th electric capacity are 720uf, the 8th electric capacity and the 9th electric capacity are 47uf, the first diode and described second diode-type
Number be IN4001, the positive pole of described power supply simultaneously with the first end of described 3rd inductance, the first end of described 7th electric capacity, institute
The first end stating the first end of the 9th electric capacity and described 4th inductance connects, the negative pole of described power supply simultaneously with described 9th electric capacity
The second end, the positive pole of described second diode, the first end of described 8th electric capacity, the second end of described 7th electric capacity, described
First end of the 5th electric capacity, the first end of described 3rd electric capacity, the first end of described 3rd resistance, the first of described first electric capacity
First end of end and described second resistance connects, and the second end of described 3rd inductance is connected with the first end of described first resistance,
Second end of described first resistance simultaneously with the second end of described second resistance, the second end of described first electric capacity and described three poles
The base stage of pipe connects, the emitter stage of described audion simultaneously with the first end of described first inductance and the first of described 4th electric capacity
End connect, the outfan that the second end is described electronics frequency modulation device of described 4th electric capacity, the second end of described first inductance with
Second end of described 3rd resistance connects, the colelctor electrode of described audion simultaneously with the first end of described second electric capacity, described can
First end of power transformation sense and the first end of described 6th electric capacity connect, the second end of described second electric capacity and described 3rd electric capacity
Second end connects, and the second end of described variable inductance is connected with the second end of described 5th electric capacity, the second of described 6th electric capacity
End is connected with the positive pole of the first end of described second inductance and described first diode simultaneously, the second end of described second inductance and
Second end of described 8th electric capacity connects, the negative pole of described first diode simultaneously with the negative pole of described second diode and described
Second end of the 4th inductance connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705088.1U CN205864372U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless device electronics frequency modulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620705088.1U CN205864372U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless device electronics frequency modulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205864372U true CN205864372U (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620705088.1U Expired - Fee Related CN205864372U (en) | 2016-07-05 | 2016-07-05 | A kind of wireless device electronics frequency modulation device |
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| CN (1) | CN205864372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347496A (en) * | 2018-10-11 | 2019-02-15 | 黄河水利职业技术学院 | A kind of data transfer of computer anti-interference process device |
-
2016
- 2016-07-05 CN CN201620705088.1U patent/CN205864372U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109347496A (en) * | 2018-10-11 | 2019-02-15 | 黄河水利职业技术学院 | A kind of data transfer of computer anti-interference process device |
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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: 20170104 Termination date: 20170705 |