CN104467676A - Monolithic crystal control conversion oscillation system based on linear driving - Google Patents
Monolithic crystal control conversion oscillation system based on linear driving Download PDFInfo
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- CN104467676A CN104467676A CN201410714711.5A CN201410714711A CN104467676A CN 104467676 A CN104467676 A CN 104467676A CN 201410714711 A CN201410714711 A CN 201410714711A CN 104467676 A CN104467676 A CN 104467676A
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Abstract
The invention discloses a monolithic crystal control conversion oscillation system based on linear driving. The system is characterized by being composed of a signal conversion circuit, a linear driving circuit, a signal amplification circuit, a regenerative feedback circuit, a frequency selecting circuit and a buffer circuit, wherein the linear driving circuit and the signal amplification circuit are both connected with the signal conversion circuit, the regenerative feedback circuit is connected with the signal amplification circuit, the frequency selecting circuit is connected with the regenerative feedback circuit, and the buffer circuit is connected with the frequency selecting circuit; the linear driving circuit is composed of a driving chip U, a triode VT2, a triode VT3, a triode VT4, a triode VT5, a polar capacitor C8, a resistor R15, a polar capacitor C10, a polar capacitor C9 and the like; the positive electrode of the polar capacitor C8 is connected with the signal conversion circuit, and the negative electrode of the polar capacitor C8 is connected with a pin IN1 of the driving chip U after passing through a resistor R14; one end of the resistor R15 is connected with the collector electrode of the triode VT5, and the other end of the resistor R15 is connected with the base electrode of the triode VT3 after passing through a resistor R16; the positive electrode of the polar capacitor C10 is connected with the base electrode of the triode VT5, and the negative electrode of the polar capacitor C10 is connected with the pin IN1 of the driving chip U; the positive electrode of the polar capacitor C9 is connected with a pin IN2 of the driving chip U, and the negative electrode of the polar capacitor C9 is grounded. The linear driving circuit can make the oscillation system maintain high stability even in the operating process within a wide frequency range.
Description
Technical field
The present invention relates to a kind of system, specifically refer to the monolithic crystalline substance control conversion oscillatory system based on Linear Driving.
Background technology
Along with the development of electronic technology, oscillator is more and more extensive as producing the electronic component application repeating electric signal (normally sinusoidal wave or square wave).Its kind is a lot, can be divided into self-excited oscillator, driven oscillator by vibratory stimulation mode; Resistance-capacitance oscillator, LC oscillator, crystal oscillator, fork generator etc. can be divided into by circuit structure; The oscillators such as sine wave, square wave, sawtooth waveforms can be divided into by output waveform.Be widely used in the aspects such as electronics industry, medical treatment, scientific research at present.
But current oscilator system the frequency range that is suitable for less, this just makes oscillatory system range of application have significant limitation.
Summary of the invention
The object of the invention is to solve current oscillatory system the less defect of the frequency range that is suitable for, provide the control of a kind of monolithic based on Linear Driving crystalline substance to convert oscillatory system.
Object of the present invention is by following technical proposals reality: based on the monolithic crystalline substance control conversion oscillatory system of Linear Driving, by signal conversion circuit, the linear drive circuit be all connected with signal conversion circuit and signal amplification circuit, the regenerative circuit be connected with signal amplification circuit, the frequency selection circuit be connected with regenerative circuit, and the buffer circuit be connected with frequency selection circuit forms, described linear drive circuit is by driving chip U, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with signal conversion circuit, the polar capacitor C8 that negative pole is connected with the IN1 pin of driving chip U after resistance R14, one end is connected with the collector electrode of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT3 after resistance R16, positive pole is connected with the base stage of triode VT5, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT5, the resistance R18 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R17 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate Y that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R20 that the other end is connected with the emitter of triode VT3 after resistance R19, the end of oppisite phase of P pole NAND gate Y is connected, the diode D2 that N pole is connected with the tie point of resistance R19 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with signal amplification circuit.
Described signal conversion circuit is by conversion chip K, transformer T1, be serially connected in the electric capacity C1 between transformer T1 secondary Same Name of Ends and non-same polarity, the electric capacity C2 be in parallel with electric capacity C1, the triode VT1 that collector electrode is connected with the OSC1 pin of conversion chip K, emitter is connected with the OSC2 pin of conversion chip K after resistance R1, base stage is then connected with the OSC2 pin of conversion chip K after fundamental quartz crystal X, the electric capacity C3 that one end is connected with the base stage of triode VT1, the other end is then connected with the VCC pin of conversion chip K forms; The base stage of described triode VT1 is connected with external power source, and the IN1 pin of conversion chip K is connected with the non-same polarity of transformer T1 secondary, its IN2 pin is then connected with the Same Name of Ends of transformer T1 secondary, GND pin is connected with the non-same polarity on the former limit of transformer T1, VCC pin is connected with the base stage of triode VT1, OUT2 pin is connected with signal amplification circuit, OUT1 pin is connected with the positive pole of electric capacity C8.
Described signal amplification circuit is by amplifier P1, the electric capacity C4 that positive pole is connected with the OUT2 pin of conversion chip K, negative pole is connected with regenerative circuit and frequency selection circuit after resistance R3, the resistance R2 that one end is connected with the inverting input of amplifier P1, the other end is connected with the negative pole of electric capacity C4, one end is connected with the normal phase input end of amplifier P1, the resistance R4 of other end ground connection, and the resistance R5 be serially connected between the inverting input of amplifier P1 and output forms; The inverting input of described amplifier P1 is connected with the positive pole of electric capacity C8, and its output is then connected with regenerative circuit.
Described regenerative circuit by field effect transistor Q1, resistance R6, resistance R7, and diode D1 forms; The drain electrode of field effect transistor Q1 is connected with the output of amplifier P1 after resistance R6, its source electrode is then connected with frequency selection circuit with resistance R3 simultaneously, its grid ground connection after resistance R7, and the P pole of diode D1 is connected with the grid of field effect transistor Q1, its N pole is then connected with frequency selection circuit.
Described frequency selection circuit comprises amplifier P2, electric capacity C5, resistance R8; The output of amplifier P2 after resistance R8 simultaneously with the N pole of diode D1 and buffer circuit is connected, its positive input end grounding, inverting input are connected with the source electrode of field effect transistor Q1, between the inverting input that electric capacity C5 is then serially connected in amplifier P2 and output.
Described buffer circuit is by transformer T2, dual-gate field-effect pipe Q2, positive pole is connected with a grid of dual-gate field-effect pipe Q2, the electric capacity C7 of minus earth, the resistance R11 be in parallel with electric capacity C7, one end is connected with the positive pole of electric capacity C7, the resistance R12 that the other end is connected with the Same Name of Ends on the former limit of transformer T2 after resistance R13, one end is connected with the b grid of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the source electrode of dual-gate field-effect pipe Q2 after electric capacity C6, and one end is connected with the source electrode of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the tie point of electric capacity C6 with resistance R9 forms, the N pole of the b grid of described dual-gate field-effect pipe Q2 also diode D1 is connected, its drain electrode is connected with the non-same polarity on the former limit of transformer T2, the Same Name of Ends ground connection of transformer T2 secondary, the tie point ground connection of resistance R9 and electric capacity C6.
The driving chip U stated is LM387 integrated chip.
The present invention compared with prior art has the following advantages and beneficial effect:
1, the present invention compared with prior art adds signal conversion circuit, and it can make oscillatory system be applicable to very wide frequency range, thus expands the application scenario of oscillatory system.
2, conversion chip K of the present invention is with low cost, and has good signal to noise ratio and third order intermodulation index.
3, linear drive circuit of the present invention can make oscillatory system can also keep very high stability when wide frequency ranges works.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of linear drive circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, monolithic based on Linear Driving crystalline substance control conversion oscillatory system of the present invention, by signal conversion circuit, the linear drive circuit be all connected with signal conversion circuit and signal amplification circuit, the regenerative circuit be connected with signal amplification circuit, the frequency selection circuit be connected with regenerative circuit, and the buffer circuit be connected with frequency selection circuit forms.
As shown in Figure 2, described linear drive circuit is by driving chip U, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with signal conversion circuit, the polar capacitor C8 that negative pole is connected with the IN1 pin of driving chip U after resistance R14, one end is connected with the collector electrode of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT3 after resistance R16, positive pole is connected with the base stage of triode VT5, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT5, the resistance R18 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R17 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate Y that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R20 that the other end is connected with the emitter of triode VT3 after resistance R19, the end of oppisite phase of P pole NAND gate Y is connected, the diode D2 that N pole is connected with the tie point of resistance R19 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with signal amplification circuit.Linear drive circuit can make oscillatory system can also keep very high stability when wide frequency ranges works.In order to ensure implementation result, described driving chip U is preferably LM387 integrated chip, its highly sensitive and low price.
Described signal conversion circuit is by conversion chip K, transformer T1, be serially connected in the electric capacity C1 between transformer T1 secondary Same Name of Ends and non-same polarity, the electric capacity C2 be in parallel with electric capacity C1, the triode VT1 that collector electrode is connected with the OSC1 pin of conversion chip K, emitter is connected with the OSC2 pin of conversion chip K after resistance R1, base stage is then connected with the OSC2 pin of conversion chip K after fundamental quartz crystal X, the electric capacity C3 that one end is connected with the base stage of triode VT1, the other end is then connected with the VCC pin of conversion chip K forms; The base stage of described triode VT1 is connected with external power source, and the IN1 pin of conversion chip K is connected with the non-same polarity of transformer T1 secondary, its IN2 pin is then connected with the Same Name of Ends of transformer T1 secondary, GND pin is connected with the non-same polarity on the former limit of transformer T1, VCC pin is connected with the base stage of triode VT1, OUT2 pin is connected with signal amplification circuit, OUT1 pin is connected with the positive pole of electric capacity C8.In order to better realize the present invention, described conversion chip K is preferably NE602, and it is easy to use and have good signal to noise ratio and third order intermodulation index.
Be provided with signal amplification circuit in system, it can be amplified inputted signal, ensures that the signal exported maintains constant numerical value.It is by amplifier P1, the electric capacity C4 that positive pole is connected with the OUT2 pin of conversion chip K, negative pole is connected with regenerative circuit and frequency selection circuit after resistance R3, the resistance R2 that one end is connected with the inverting input of amplifier P1, the other end is connected with the negative pole of electric capacity C4, one end is connected with the normal phase input end of amplifier P1, the resistance R4 of other end ground connection, and the resistance R5 be serially connected between the inverting input of amplifier P1 and output forms; The inverting input of described amplifier P1 is connected with the positive pole of electric capacity C8, and its output is then connected with regenerative circuit.
Regenerative circuit can make the phase place of the feedback signal of input identical, to ensure that system oscillation maintains.Described regenerative circuit by field effect transistor Q1, resistance R6, resistance R7, and diode D1 forms; The drain electrode of field effect transistor Q1 is connected with the output of amplifier P1 after resistance R6, its source electrode is then connected with frequency selection circuit with resistance R3 simultaneously, its grid ground connection after resistance R7, and the P pole of diode D1 is connected with the grid of field effect transistor Q1, its N pole is then connected with frequency selection circuit.
Frequency selection circuit then can screen frequency, and it allows specific frequency to pass through, and makes oscillatory system maintain the output of single-frequency.Described frequency selection circuit comprises amplifier P2, electric capacity C5, resistance R8; The output of amplifier P2 after resistance R8 simultaneously with the N pole of diode D1 and buffer circuit is connected, its positive input end grounding, inverting input are connected with the source electrode of field effect transistor Q1, between the inverting input that electric capacity C5 is then serially connected in amplifier P2 and output.
Described buffer circuit is by transformer T2, dual-gate field-effect pipe Q2, positive pole is connected with a grid of dual-gate field-effect pipe Q2, the electric capacity C7 of minus earth, the resistance R11 be in parallel with electric capacity C7, one end is connected with the positive pole of electric capacity C7, the resistance R12 that the other end is connected with the Same Name of Ends on the former limit of transformer T2 after resistance R13, one end is connected with the b grid of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the source electrode of dual-gate field-effect pipe Q2 after electric capacity C6, and one end is connected with the source electrode of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the tie point of electric capacity C6 with resistance R9 forms, the N pole of the b grid of described dual-gate field-effect pipe Q2 also diode D1 is connected, its drain electrode is connected with the non-same polarity on the former limit of transformer T2, the Same Name of Ends ground connection of transformer T2 secondary, the tie point ground connection of resistance R9 and electric capacity C6.Can load effect in effective anti-locking system and the existing picture of frequency drift that produces because of load variations by the effect of buffer circuit, thus realize the low distortion of oscillating circuit.
As mentioned above, just well the present invention can be realized.
Claims (7)
1. based on the monolithic crystalline substance control conversion oscillatory system of Linear Driving, it is characterized in that: by signal conversion circuit, the linear drive circuit be all connected with signal conversion circuit and signal amplification circuit, the regenerative circuit be connected with signal amplification circuit, the frequency selection circuit be connected with regenerative circuit, and the buffer circuit be connected with frequency selection circuit forms, described linear drive circuit is by driving chip U, triode VT2, triode VT3, triode VT4, triode VT5, positive pole is connected with signal conversion circuit, the polar capacitor C8 that negative pole is connected with the IN1 pin of driving chip U after resistance R14, one end is connected with the collector electrode of triode VT5, the resistance R15 that the other end is connected with the base stage of triode VT3 after resistance R16, positive pole is connected with the base stage of triode VT5, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C9 of minus earth, one end is connected with the emitter of triode VT5, the resistance R18 that the other end is connected with the base stage of triode VT2, one end is connected with the base stage of triode VT2, the resistance R17 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT5, the diode D3 that P pole is connected with the collector electrode of triode VT2, positive terminal is connected with the collector electrode of triode VT5, the not gate Y that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R20 that the other end is connected with the emitter of triode VT3 after resistance R19, the end of oppisite phase of P pole NAND gate Y is connected, the diode D2 that N pole is connected with the tie point of resistance R19 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT5, END pin ground connection, OUT pin are connected with the collector electrode of triode VT2, the collector electrode of triode VT2 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode man VT3, the grounded collector of triode VT3, the N pole of diode D2 is connected with signal amplification circuit.
2. the crystalline substance of the monolithic based on Linear Driving control conversion oscillatory system according to claim 1, it is characterized in that: described signal conversion circuit is by conversion chip K, transformer T1, be serially connected in the electric capacity C1 between transformer T1 secondary Same Name of Ends and non-same polarity, the electric capacity C2 be in parallel with electric capacity C1, collector electrode is connected with the OSC1 pin of conversion chip K, emitter is connected with the OSC2 pin of conversion chip K after resistance R1, the triode VT1 that base stage is then connected with the OSC2 pin of conversion chip K after fundamental quartz crystal X, one end is connected with the base stage of triode VT1, the electric capacity C3 that the other end is then connected with the VCC pin of conversion chip K forms, the base stage of described triode VT1 is connected with external power source, and the IN1 pin of conversion chip K is connected with the non-same polarity of transformer T1 secondary, its IN2 pin is then connected with the Same Name of Ends of transformer T1 secondary, GND pin is connected with the non-same polarity on the former limit of transformer T1, VCC pin is connected with the base stage of triode VT1, OUT2 pin is connected with signal amplification circuit, OUT1 pin is connected with the positive pole of electric capacity C8.
3. the crystalline substance of the monolithic based on Linear Driving control conversion oscillatory system according to claim 2, it is characterized in that: described signal amplification circuit is by amplifier P1, positive pole is connected with the OUT2 pin of conversion chip K, the electric capacity C4 that negative pole is connected with regenerative circuit and frequency selection circuit after resistance R3, one end is connected with the inverting input of amplifier P1, the resistance R2 that the other end is connected with the negative pole of electric capacity C4, one end is connected with the normal phase input end of amplifier P1, the resistance R4 of other end ground connection, and the resistance R5 be serially connected between the inverting input of amplifier P1 and output forms, the inverting input of described amplifier P1 is connected with the positive pole of electric capacity C8, and its output is then connected with regenerative circuit.
4. the monolithic based on Linear Driving according to claim 3 crystalline substance control conversion oscillatory system, is characterized in that: described regenerative circuit by field effect transistor Q1, resistance R6, resistance R7, and diode D1 forms; The drain electrode of field effect transistor Q1 is connected with the output of amplifier P1 after resistance R6, its source electrode is then connected with frequency selection circuit with resistance R3 simultaneously, its grid ground connection after resistance R7, and the P pole of diode D1 is connected with the grid of field effect transistor Q1, its N pole is then connected with frequency selection circuit.
5. the crystalline substance of the monolithic based on Linear Driving control conversion oscillatory system according to claim 4, is characterized in that: described frequency selection circuit comprises amplifier P2, electric capacity C5, resistance R8; The output of amplifier P2 after resistance R8 simultaneously with the N pole of diode D1 and buffer circuit is connected, its positive input end grounding, inverting input are connected with the source electrode of field effect transistor Q1, between the inverting input that electric capacity C5 is then serially connected in amplifier P2 and output.
6. the crystalline substance of the monolithic based on Linear Driving control conversion oscillatory system according to claim 5, it is characterized in that: described buffer circuit is by transformer T2, dual-gate field-effect pipe Q2, positive pole is connected with a grid of dual-gate field-effect pipe Q2, the electric capacity C7 of minus earth, the resistance R11 be in parallel with electric capacity C7, one end is connected with the positive pole of electric capacity C7, the resistance R12 that the other end is connected with the Same Name of Ends on the former limit of transformer T2 after resistance R13, one end is connected with the b grid of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the source electrode of dual-gate field-effect pipe Q2 after electric capacity C6, and one end is connected with the source electrode of dual-gate field-effect pipe Q2, the resistance R9 that the other end is connected with the tie point of electric capacity C6 with resistance R9 forms, the N pole of the b grid of described dual-gate field-effect pipe Q2 also diode D1 is connected, its drain electrode is connected with the non-same polarity on the former limit of transformer T2, the Same Name of Ends ground connection of transformer T2 secondary, the tie point ground connection of resistance R9 and electric capacity C6.
7. the crystalline substance of the monolithic based on the Linear Driving control conversion oscillatory system according to any one of claim 1 ~ 6, is characterized in that: the driving chip U stated is LM387 integrated chip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714711.5A CN104467676A (en) | 2014-11-29 | 2014-11-29 | Monolithic crystal control conversion oscillation system based on linear driving |
| CN201510321320.1A CN104953952A (en) | 2014-11-29 | 2015-06-12 | Single crystal control transformation oscillating system of voltage-reduction type constant-current circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714711.5A CN104467676A (en) | 2014-11-29 | 2014-11-29 | Monolithic crystal control conversion oscillation system based on linear driving |
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| CN104467676A true CN104467676A (en) | 2015-03-25 |
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| CN201410714711.5A Pending CN104467676A (en) | 2014-11-29 | 2014-11-29 | Monolithic crystal control conversion oscillation system based on linear driving |
| CN201510321320.1A Withdrawn CN104953952A (en) | 2014-11-29 | 2015-06-12 | Single crystal control transformation oscillating system of voltage-reduction type constant-current circuit |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510321320.1A Withdrawn CN104953952A (en) | 2014-11-29 | 2015-06-12 | Single crystal control transformation oscillating system of voltage-reduction type constant-current circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953952A (en) * | 2014-11-29 | 2015-09-30 | 成都颉盛科技有限公司 | Single crystal control transformation oscillating system of voltage-reduction type constant-current circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199636Y (en) * | 1994-03-29 | 1995-05-31 | 许天昀 | Current transformer |
| US6724556B2 (en) * | 2001-06-29 | 2004-04-20 | Texas Instruments Incorporated | Single pole voltage bias loop for increased stability |
| CN104410288A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | Phase-shift processing based oscillating system by single-chip crystal-controlled transformation |
| CN104467676A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Monolithic crystal control conversion oscillation system based on linear driving |
-
2014
- 2014-11-29 CN CN201410714711.5A patent/CN104467676A/en active Pending
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- 2015-06-12 CN CN201510321320.1A patent/CN104953952A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953952A (en) * | 2014-11-29 | 2015-09-30 | 成都颉盛科技有限公司 | Single crystal control transformation oscillating system of voltage-reduction type constant-current circuit |
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Application publication date: 20150325 |