CN107064578A - A kind of constant high-precision frequency generator - Google Patents
A kind of constant high-precision frequency generator Download PDFInfo
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- CN107064578A CN107064578A CN201710288866.0A CN201710288866A CN107064578A CN 107064578 A CN107064578 A CN 107064578A CN 201710288866 A CN201710288866 A CN 201710288866A CN 107064578 A CN107064578 A CN 107064578A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/28—Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
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Abstract
The invention discloses the constant high-precision frequency generator of one kind, including waveform generator U1, power amplifier U2, active crystal oscillator X1, the first relay K1, the second relay K2, the first signal connector J1, secondary signal connector J2, the 3rd signal connector JP3.Under the present invention is by the use of active fixed frequency crystal oscillator X1 as entry condition, pass through a low-power consumption, programmable waveform generator U1, sine wave, triangular wave and square wave output can be produced, to be applied to the occasions such as various types of detections, actuating and Time Domain Reflectometry (TDR).Controlled by signal connector JP1, its output frequency and phase can be programmed by software, adjustment is simple, without outer member, and compatible with DSP and microcontroller standard.Then the amplitude of frequency is amplified by power amplifier U2, is selected by relay switching channel K1 and K2, signal Buzzer1 and Buzzer2 are applied to different occasions.This circuit performance is stable, and design is simple, with low cost.
Description
Technical field：
The invention belongs to signal generator technical field, a kind of constant high-precision frequency generator is specifically related to.
Background technology：
Signal generator is a kind of equipment that can provide various frequencies, waveform and output level electric signal.It is various measuring
When the amplitude response of telecommunication system or telecommunication apparatus, frequency characteristic, transmission characteristic and other electrical parameters, and measurement component
When characteristic is with parameter, signal source or driving source as test.Signal generator is also known as signal source or oscillator, in production
Between and sciemtifec and technical sphere in have a wide range of applications, can produce multiple waveforms, such as triangular wave, sawtooth waveforms, square wave (containing square wave),
Sine wave.
Existing signal generator can only be single a kind of signal of output, it is impossible to meet signal while being applied to different fields
Close, and circuit performance is unstable, cost is high.
The content of the invention：
In order to solve the above technical problems, the present invention proposes a kind of constant high progress frequency generator.
To reach above-mentioned purpose, technical scheme is as follows：
A kind of constant high-precision frequency generator, including：
Waveform generator U1, power amplifier U2, active crystal oscillator X1, the first relay K1, the second relay K2, the first letter
Number connector J1, secondary signal connector J2, the 3rd signal connector JP3.
The output end of the active crystal oscillator X1 is connected with the frequency input of the waveform generator U1, and the waveform occurs
Device U1 signal control end is connected with the signal output part of the 3rd signal connector JP3, the ripple of the waveform generator U1
Shape output end is connected with the input of the power amplifier U2, and the output end of the power amplifier U2 is respectively with described first
Relay K1, the second relay K2 connections, the first relay K1 is connected with the first signal connector J1, described
Second relay K2 is connected with the secondary signal connector J2 respectively.
It is used as the preferred of above-mentioned technical proposal, the connection of 2 the pin VCC, the waveform generator U1 of the waveform generator U1
1 pin connect the first electric capacity C1 first end, the first electric capacity C1 the second end connection VCC, the 3rd electric capacity C3 first end connection
VCC, the 3rd electric capacity C3 the second end ground connection, 3 pin of the waveform generator U1 connect the 7th electric capacity C7 first end, the 7th electricity
Hold C7 the second end ground connection, the 9th electric capacity C9 is in parallel with the 7th electric capacity C7, and 4 pin and 9 pin of the waveform generator U1 connect respectively
Ground, 6 pin of the waveform generator U1 connect the first signal control end SDA, the waveform generator U1 letter of 7 pin connection second
Number control end SCL, the waveform generator U1 8 pin connect the 3rd signal control end FSY, 10 pin of the waveform generator U1
Connect the 4th electric capacity C4 first end, the 4th electric capacity C4 the second end connection second resistance R2 first end, the second resistance
R2 the second end connects the power amplifier U2.
As the preferred of above-mentioned technical proposal, 3 pin of the active crystal oscillator X1 connect 5 pin of the waveform generator U1,
The 2 pin ground connection of the active crystal oscillator X1, the connection of 4 the pin VCC, the 8th electric capacity C8 of the active crystal oscillator X1 first end connection is active
Crystal oscillator X1 4 pin, the 8th electric capacity C8 the second end ground connection.
It is used as the preferred of above-mentioned technical proposal, the 4 pin connection second resistance R2 of the power amplifier U2 the second end, institute
3 pin and 2 pin for stating power amplifier U2 connect the 6th electric capacity C6 first end, the 6th electric capacity C6 the second end ground connection, institute respectively
1 pin for stating power amplifier U2 connects the 4th signal control end CR4, and the negative pole of LED 1 connects the power amplification
Device U2 1 pin, the positive pole connection 3rd resistor R3 of LED 1 first end, 3rd resistor R3 the second end connection
VCC, the power amplifier U2 7 pin ground connection, the 6 pin connection VCC of the power amplifier U2, the second electric capacity C2 first end
Connect 6 pin of the power amplifier U2, the second electric capacity C2 first end ground connection, 5 pin and 4 pin of the power amplifier U2 it
Between be connected with potentiometer R1, the 5th electric capacity C5 first end and connect 5 pin of the power amplifier U2, the second of the 5th electric capacity C5
End connection the first relay K1 and the second relay K2.
As the preferred of above-mentioned technical proposal, 3 pin and 6 pin of the first relay K1 connect the 5th electric capacity C5's respectively
Second end, 1 pin of the first relay K1 is connected described in the 5th signal control end CR2, the first diode D1 positive pole connection
First relay K1 1 pin, the first diode D1 negative pole connects 8 pin of the first relay K1, the second light emitting diode
D2 negative pole connects 1 pin of the first relay K1, and the second light emitting diode D2 positive pole connects the first of the 4th resistance R4
End, the 4th resistance R4 the first relay K1 of the second end connection 8 pin, the 8 pin connection+24V voltages of the first relay K1,
4 pin and 5 pin of the first relay K1 connect 2 pin of the first signal connector J1, the first signal connection respectively
J1 1 pin ground connection；
3 pin and 6 pin of the second relay K2 connect the 5th electric capacity C5 the second end, the second relay K2 respectively
1 pin connect the 6th signal control end CR3, the 3rd diode D3 positive pole and connect 1 pin of the second relay K2, the three or two
Pole pipe D3 negative pole connects 8 pin of the second relay K2, and the 4th light emitting diode D4 negative pole connects second relay
Device K2 1 pin, the 4th light emitting diode D4 positive pole connects the 5th resistance R5 first end, the 5th resistance R5 the second end connection
Second relay K2 8 pin, the 8 pin connection+24V voltages of the second relay K2,4 pin and 5 of the second relay K2
Pin connects 2 pin of the secondary signal connector J2, the 1 pin ground connection of the secondary signal connection J2 respectively.
As the preferred of above-mentioned technical proposal, 1 pin and 2 pin of the 3rd signal connector JP3 control for the 3rd signal
FSY is held, 3 pin and 4 pin of the 3rd signal connector JP3 are secondary signal control end SCL, the 3rd signal connector
7 pin and 8 pin that JP3 5 pin and 6 pin are the first signal control end SDA, the 3rd signal connector JP3 are the 5th signal control
End CR2 processed, the 3rd signal connector JP3 9 pin and 10 pin are the 6th signal control end CR3, the 3rd signal connection
Device JP3 11 pin and 12 pin connect respectively for the 4th signal control end CR4, the 3rd signal connector JP3 13 pin and 14 pin
VCC is met, the tenth electric capacity C10 first end connects 13 pin of the 3rd signal connector JP3, the tenth electric capacity C10 the second end
Ground connection, the 11st electric capacity C11 first end connects 14 pin of the 3rd signal connector JP3, the second of the 11st electric capacity C11
End ground connection, 15 pin and 16 pin of the 3rd signal connector JP3 connect+24V voltages, the first of the 13rd electric capacity C13 respectively
End connection the 3rd signal connector JP3 15 pin, the 13rd electric capacity C13 the second end ground connection, the of the 12nd electric capacity C12
One end connects 16 pin of the 3rd signal connector JP3, and the 12nd electric capacity C12 the second end ground connection, the 3rd signal connects
17 pin, 18 pin, 19 pin, 20 pin for meeting device JP3 are grounded respectively.
As the preferred of above-mentioned technical proposal, the 5th electric capacity C5 is resistance low frequency capacitive.
As the preferred of above-mentioned technical proposal, the waveform generator U1 chooses model AD9833 high-precision programmable
Generator.
As the preferred of above-mentioned technical proposal, the power amplifier U2 chooses model LM4861M amplifier.
As the preferred of above-mentioned technical proposal, the 3rd signal connector JP3 chooses the double of model HEADER 10X2
Arrange connector.
The beneficial effects of the present invention are：Under the present invention is by the use of active fixed frequency crystal oscillator X1 as entry condition, pass through
A low-power consumption, programmable waveform generator U1, can produce sine wave, triangular wave and square wave output, various types of to be applied to
The occasions such as detection, actuating and the Time Domain Reflectometry (TDR) of type.Controlled by signal connector JP1, its output frequency and phase can lead to
Cross software to be programmed, adjustment is simple, without outer member, and compatible with DSP and microcontroller standard.Then power amplifier is passed through
U2 is amplified to the amplitude of frequency, is selected by relay switching channel K1 and K2, by signal Buzzer1 and
Buzzer2 is applied to different occasions.This circuit performance is stable, and design is simple, with low cost, it is adaptable to which waveform occurs, MIC work(
It can test, the occasion such as frequency modulation.
Brief description of the drawings：
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1 is a kind of constant high-precision frequency generator circuit figure of one embodiment of the invention；
Fig. 2 is the 3rd signal connector JP3 of one embodiment of the invention circuit diagram.
Embodiment：
As shown in Figure 1 and Figure 2, a kind of constant high-precision frequency generator of the invention, including：
Waveform generator U1, power amplifier U2, active crystal oscillator X1, the first relay K1, the second relay K2, the first letter
Number connector J1, secondary signal connector J2, the 3rd signal connector JP3.The waveform generator U1 chooses model
AD9833 high-precision programmable generator.The power amplifier U2 chooses model LM4861M amplifier.Described 3rd
Signal connector JP3 chooses model HEADER 10X2 double connector.
The output end of the active crystal oscillator X1 is connected with the frequency input of the waveform generator U1, and the waveform occurs
Device U1 signal control end is connected with the signal output part of the 3rd signal connector JP3, the ripple of the waveform generator U1
Shape output end is connected with the input of the power amplifier U2, and the output end of the power amplifier U2 is respectively with described first
Relay K1, the second relay K2 connections, the first relay K1 is connected with the first signal connector J1, described
Second relay K2 is connected with the secondary signal connector J2 respectively.
The 2 pin connection VCC of the waveform generator U1,1 pin of the waveform generator U1 connects the of the first electric capacity C1
One end, the first electric capacity C1 connection of the second end VCC, the 3rd electric capacity C3 first end connection VCC, the 3rd electric capacity C3 the second termination
Ground, 3 pin of the waveform generator U1 connect the 7th electric capacity C7 first end, the 7th electric capacity C7 the second end ground connection, the 9th electricity
Appearance C9 is in parallel with the 7th electric capacity C7, and 4 pin and 9 pin of the waveform generator U1 are grounded respectively, 6 pin of the waveform generator U1
The first signal control end SDA, the waveform generator U1 7 pin connection secondary signal control end SCL is connected, the waveform occurs
Device U1 8 pin connect the 3rd signal control end FSY, the waveform generator U1 the 4th electric capacity C4 of 10 pin connection first end,
4th electric capacity C4 the second end connection second resistance R2 first end, the second end of the second resistance R2 connects the power and put
Big device U2.
3 pin of the active crystal oscillator X1 connect 5 pin of the waveform generator U1, and 2 pin of the active crystal oscillator X1 are grounded,
The connection of 4 the pin VCC, the 8th electric capacity C8 of the active crystal oscillator X1 first end connect active crystal oscillator X1 4 pin, the 8th electric capacity C8's
Second end is grounded.
The 4 pin connection second resistance R2 of the power amplifier U2 the second end, 3 pin and 2 of the power amplifier U2
Pin connects the 6th electric capacity C6 first end, the 6th electric capacity C6 the second end ground connection, the 1 pin connection of the power amplifier U2 respectively
4th signal control end CR4, the negative pole of LED 1 connects 1 pin of the power amplifier U2, light emitting diode
LED1 positive pole connection 3rd resistor R3 first end, 3rd resistor the R3 connection of the second end VCC, the power amplifier U2
7 pin ground connection, the 6 pin connection VCC of the power amplifier U2, the second electric capacity C2 first end connects the power amplifier U2
6 pin, the second electric capacity C2 first end ground connection is connected with potentiometer R1 between 5 pin and 4 pin of the power amplifier U2, the
Five electric capacity C5 first end connects 5 pin of the power amplifier U2, and the 5th electric capacity C5 the second end connects the first relay K1
With the second relay K2.The 5th electric capacity C5 is resistance low frequency capacitive.
3 pin and 6 pin of the first relay K1 connect the 5th electric capacity C5 the second end, the first relay K1 respectively
1 pin connect the 5th signal control end CR2, the first diode D1 positive pole and connect 1 pin of the first relay K1, the one or two
Pole pipe D1 negative pole connects 8 pin of the first relay K1, and the second light emitting diode D2 negative pole connects first relay
Device K1 1 pin, the second light emitting diode D2 positive pole connects the 4th resistance R4 first end, the 4th resistance R4 the second end connection
First relay K1 8 pin, the 8 pin connection+24V voltages of the first relay K1,4 pin and 5 of the first relay K1
Pin connects 2 pin of the first signal connector J1, the 1 pin ground connection of the first signal connection J1 respectively.
3 pin and 6 pin of the second relay K2 connect the 5th electric capacity C5 the second end, the second relay K2 respectively
1 pin connect the 6th signal control end CR3, the 3rd diode D3 positive pole and connect 1 pin of the second relay K2, the three or two
Pole pipe D3 negative pole connects 8 pin of the second relay K2, and the 4th light emitting diode D4 negative pole connects second relay
Device K2 1 pin, the 4th light emitting diode D4 positive pole connects the 5th resistance R5 first end, the 5th resistance R5 the second end connection
Second relay K2 8 pin, the 8 pin connection+24V voltages of the second relay K2,4 pin and 5 of the second relay K2
Pin connects 2 pin of the secondary signal connector J2, the 1 pin ground connection of the secondary signal connection J2 respectively.
1 pin and 2 pin of the 3rd signal connector JP3 is the 3rd signal control end FSY, the 3rd signal connector
JP3 3 pin and 4 pin are that secondary signal control end SCL, the 3rd signal connector JP3 5 pin and 6 pin are the first signal control
End SDA processed, the 3rd signal connector JP3 7 pin and 8 pin are the 5th signal control end CR2, the 3rd signal connector
11 pin and 12 pin that JP3 9 pin and 10 pin are the 6th signal control end CR3, the 3rd signal connector JP3 are the 4th signal
Control end CR4, the 3rd signal connector JP3 13 pin and 14 pin connect VCC respectively, and the tenth electric capacity C10 first end connects
13 pin of the 3rd signal connector JP3 are connect, the tenth electric capacity C10 the second end ground connection, the 11st electric capacity C11 first end connects
Connect 14 pin of the 3rd signal connector JP3, the 11st electric capacity C11 the second end ground connection, the 3rd signal connector JP3
15 pin and 16 pin connect+24V voltages respectively, the 13rd electric capacity C13 first end connects the 3rd signal connector JP3's
15 pin, the 13rd electric capacity C13 the second end ground connection, the 12nd electric capacity C12 first end connects the 3rd signal connector JP3
16 pin, the 12nd electric capacity C12 the second end ground connection, 17 pin of the 3rd signal connector JP3,18 pin, 19 pin, 20 pin point
It is not grounded.
Operation principle：
In Fig. 1 U1 pin2 pin be power pins there is provided a VCC voltages, be easy to stabilization, U1 pin1 pin are connect into electric capacity
C1 to VCC, U1 pin3 pin meet C7 and C9 to GND.U1 pin4 and pin9 is digitally to meet GND. with simulation.Active crystal oscillator
X1 output pin pin3 is connected to U1 frequency input pin pin5, and wherein C3, C8 is filter capacitor, it is ensured that the stabilization of power supply
Property.Then microprocessor control U1 is connected to by signal FSY, SDA, SCL in signal connector JP1, U1 is passed through pin10 pin
Export sine wave, triangular wave and the square wave of constant frequency.
After U1 frequency is exported by pin10 pin in Fig. 1, R2 is connected to by C4, work(is changed by adjusting R1 resistance
U2 multiplication factor is put, multiplication factor is determined by R1/R2 ratio, as needed, is adjusted to suitable frequency power.First
U2 is enabled, U2 pin1 pins are dragged down.C5 for resistance low frequency capacitive, it is allowed to high-frequency signal passes through, it is ensured that frequency signal it is pure
Clean property.
By U2 pin5 frequencies by amplifying, after C5 resistance low frequency, frequency signal now is sent to K1 and K2, passes through
R2 and R3 in microprocessor control JP1, switch K1 and K2, connect J1 and J2 to be applied to different occasions.
D1 in Fig. 1, D3 are the aerial drainage diode of relay, it is ensured that relay shutdown transient electromotive force is not interfered with additionally
Circuit, it is ensured that the stability of whole circuit working state.
A kind of constant high-precision frequency generator described in the present embodiment, including waveform generator U1, power amplifier U2,
Active crystal oscillator X1, the first relay K1, the second relay K2, the first signal connector J1, secondary signal connector J2, the 3rd letter
Number connector JP3.Under the present invention is by the use of active fixed frequency crystal oscillator X1 as entry condition, by a low-power consumption, it may be programmed
Waveform generator U1, can produce sine wave, triangular wave and square wave output, come be applied to it is various types of detection, activate and when
The occasions such as domain reflection (TDR).Controlled, its output frequency and phase can be programmed by software, adjusted by signal connector JP1
It is whole simple, without outer member, and it is compatible with DSP and microcontroller standard.Then the amplitude of frequency is entered by power amplifier U2
Row amplification, is selected by relay switching channel K1 and K2, signal Buzzer1 and Buzzer2 is applied into different fields
Close.This circuit performance is stable, and design is simple, with low cost, it is adaptable to which waveform occurs, MIC functional tests, the occasion such as frequency modulation.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of constant high-precision frequency generator, it is characterised in that including：
Waveform generator U1, power amplifier U2, active crystal oscillator X1, the first relay K1, the second relay K2, the first signal connect
Meet device J1, secondary signal connector J2, the 3rd signal connector JP3；
The output end of the active crystal oscillator X1 is connected with the frequency input of the waveform generator U1, the waveform generator U1
Signal control end be connected with the signal output part of the 3rd signal connector JP3, the waveform of the waveform generator U1 is defeated
Go out end to be connected with the input of the power amplifier U2, the output end of the power amplifier U2 respectively with first relay
Device K1, the second relay K2 connections, the first relay K1 are connected with the first signal connector J1, and described second
Relay K2 is connected with the secondary signal connector J2 respectively.
2. the constant high progress frequency generator of one kind according to claim 1, it is characterised in that：
The connection of 2 the pin VCC, the waveform generator U1 of the waveform generator U1 1 pin connect the first electric capacity C1 first end,
First electric capacity the C1 connection of the second end VCC, the 3rd electric capacity C3 first end connection VCC, the 3rd electric capacity C3 the second end ground connection, institute
State waveform generator U1 3 pin connect the 7th electric capacity C7 first end, the 7th electric capacity C7 the second end ground connection, the 9th electric capacity C9 with
7th electric capacity C7 is in parallel, and 4 pin and 9 pin of the waveform generator U1 are grounded respectively, the 6 pin connection of the waveform generator U1 the
One signal control end SDA, the waveform generator U1 7 pin connection secondary signal control end SCL, the waveform generator U1's
8 pin connect the 3rd signal control end FSY, the waveform generator U1 the 4th electric capacity C4 of 10 pin connection first end, the 4th electricity
Hold C4 the second end connection second resistance R2 first end, the second end of the second resistance R2 connects the power amplifier
U2。
3. the constant high progress frequency generator of one kind according to claim 2, it is characterised in that：
3 pin of the active crystal oscillator X1 connect 5 pin of the waveform generator U1, and the 2 pin ground connection of the active crystal oscillator X1 is described
Active crystal oscillator the X1 connection of 4 pin VCC, the 8th electric capacity C8 first end connect active crystal oscillator X1 4 pin, the second of the 8th electric capacity C8
End ground connection.
4. the constant high progress frequency generator of one kind according to claim 3, it is characterised in that：
The 4 pin connection second resistance R2 of the power amplifier U2 the second end, 3 pin and 2 pin point of the power amplifier U2
Not Lian Jie the 6th electric capacity C6 first end, the 6th electric capacity C6 the second end ground connection, the power amplifier U2 1 pin connection the 4th
Signal control end CR4, the negative pole of LED 1 connects 1 pin of the power amplifier U2, LED 1
Positive pole connection 3rd resistor R3 first end, 3rd resistor R3 the second end connection VCC, 7 pin of the power amplifier U2
Ground connection, the connection of 6 the pin VCC, the second electric capacity C2 of the power amplifier U2 first end connects the 6 of the power amplifier U2
Pin, the second electric capacity C2 first end ground connection is connected with potentiometer R1, the 5th electricity between 5 pin and 4 pin of the power amplifier U2
The first end for holding C5 connects 5 pin of the power amplifier U2, and the 5th electric capacity C5 the second end connects the first relay K1 and the
Two relay K2.
5. the constant high progress frequency generator of one kind according to claim 4, it is characterised in that：
3 pin and 6 pin of the first relay K1 connect the 5th electric capacity C5 the second end, the 1 of the first relay K1 respectively
Pin connects the 5th signal control end CR2, the first diode D1 positive pole connection the first relay K1 1 pin, the one or two pole
Pipe D1 negative pole connects 8 pin of the first relay K1, and the second light emitting diode D2 negative pole connects first relay
K1 1 pin, the second light emitting diode D2 positive pole connects the 4th resistance R4 first end, the 4th resistance R4 the second end connection the
One relay K1 8 pin, the 8 pin connection+24V voltages of the first relay K1,4 pin and 5 pin of the first relay K1
2 pin of the first signal connector J1, the 1 pin ground connection of the first signal connection J1 are connected respectively；
3 pin and 6 pin of the second relay K2 connect the 5th electric capacity C5 the second end, the 1 of the second relay K2 respectively
Pin connects the 6th signal control end CR3, the 3rd diode D3 positive pole connection the second relay K2 1 pin, the three or two pole
Pipe D3 negative pole connects 8 pin of the second relay K2, and the 4th light emitting diode D4 negative pole connects second relay
K2 1 pin, the 4th light emitting diode D4 positive pole connects the 5th resistance R5 first end, the 5th resistance R5 the second end connection the
Two relay K2 8 pin, the 8 pin connection+24V voltages of the second relay K2,4 pin and 5 pin of the second relay K2
2 pin of the secondary signal connector J2, the 1 pin ground connection of the secondary signal connection J2 are connected respectively.
6. the constant high progress frequency generator of one kind according to claim 5, it is characterised in that：
1 pin and 2 pin of the 3rd signal connector JP3 is the 3rd signal control end FSY, the 3rd signal connector JP3
3 pin and 5 pin and 6 pin that 4 pin are secondary signal control end SCL, the 3rd signal connector JP3 be the first signal control end
SDA, the 3rd signal connector JP3 7 pin and 8 pin are the 5th signal control end CR2, the 3rd signal connector JP3
9 pin and 11 pin and 12 pin that 10 pin are the 6th signal control end CR3, the 3rd signal connector JP3 be the 4th signal control
End CR4 processed, the 3rd signal connector JP3 13 pin and 14 pin connect VCC, the tenth electric capacity C10 first end connection respectively
13 pin of the 3rd signal connector JP3, the tenth electric capacity C10 the second end ground connection, the 11st electric capacity C11 first end connection
14 pin of the 3rd signal connector JP3, the 11st electric capacity C11 the second end ground connection, the 3rd signal connector JP3's
15 pin and 16 pin connect+24V voltages respectively, and the 13rd electric capacity C13 first end connects the 15 of the 3rd signal connector JP3
Pin, the 13rd electric capacity C13 the second end ground connection, the 12nd electric capacity C12 first end connects the 3rd signal connector JP3's
16 pin, the 12nd electric capacity C12 the second end ground connection, 17 pin of the 3rd signal connector JP3,18 pin, 19 pin, 20 pin difference
Ground connection.
7. the constant high progress frequency generator of one kind according to claim 5, it is characterised in that：
The 5th electric capacity C5 is resistance low frequency capacitive.
8. the constant high progress frequency generator of one kind according to claim 1, it is characterised in that：
The waveform generator U1 chooses model AD9833 high-precision programmable generator.
9. the constant high progress frequency generator of one kind according to claim 1, it is characterised in that：
The power amplifier U2 chooses model LM4861M amplifier.
10. the constant high progress frequency generator of one kind according to claim 1, it is characterised in that：
The 3rd signal connector JP3 chooses model HEADER 10X2 double connector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710288866.0A CN107064578A (en) | 2017-04-27 | 2017-04-27 | A kind of constant high-precision frequency generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710288866.0A CN107064578A (en) | 2017-04-27 | 2017-04-27 | A kind of constant high-precision frequency generator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57135373A (en) * | 1981-02-16 | 1982-08-20 | Showa Electric Wire & Cable Co Ltd | Power supply device for measuring electric power apparatus |
| CN201797573U (en) * | 2010-08-06 | 2011-04-13 | 深圳市共进电子有限公司 | Ethernet passive optical network terminal equipment with voice channel switching function |
| CN204631128U (en) * | 2015-06-01 | 2015-09-09 | 常州中策仪器有限公司 | A kind of test circuit of resonance frequency |
| CN105045188A (en) * | 2015-08-27 | 2015-11-11 | 武汉华宇科技发展有限公司 | Multichannel selection module |
-
2017
- 2017-04-27 CN CN201710288866.0A patent/CN107064578A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57135373A (en) * | 1981-02-16 | 1982-08-20 | Showa Electric Wire & Cable Co Ltd | Power supply device for measuring electric power apparatus |
| CN201797573U (en) * | 2010-08-06 | 2011-04-13 | 深圳市共进电子有限公司 | Ethernet passive optical network terminal equipment with voice channel switching function |
| CN204631128U (en) * | 2015-06-01 | 2015-09-09 | 常州中策仪器有限公司 | A kind of test circuit of resonance frequency |
| CN105045188A (en) * | 2015-08-27 | 2015-11-11 | 武汉华宇科技发展有限公司 | Multichannel selection module |
Non-Patent Citations (2)
| Title |
|---|
| 元器件交易网: "LM4861_03中文资料", 《百度文库》 * |
| 唐起源，朱金刚: "高精度低频信号发生器的制作", 《电子制作》 * |
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Address after: The Wujiang economic and Technological Development Zone West Road Wujiang District of Suzhou City, Jiangsu Province, No. 666 215200 Applicant after: Bo Seiko Polytron Technologies Inc Address before: The Wujiang economic and Technological Development Zone West Road Wujiang District of Suzhou City, Jiangsu Province, No. 666 215200 Applicant before: Suzhou Bozhong Precision Industry Technology Co., Ltd. |
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Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |