CN104901689A - High-stability voltage-controlled oscillator based on pulse amplification trigger circuit - Google Patents
High-stability voltage-controlled oscillator based on pulse amplification trigger circuit Download PDFInfo
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- CN104901689A CN104901689A CN201510284299.2A CN201510284299A CN104901689A CN 104901689 A CN104901689 A CN 104901689A CN 201510284299 A CN201510284299 A CN 201510284299A CN 104901689 A CN104901689 A CN 104901689A
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Abstract
The invention discloses a high-stability voltage-controlled oscillator based on a pulse amplification trigger circuit. The high-stability voltage-controlled oscillator is composed of an oscillating circuit, a micro-processing circuit connected with the oscillating circuit, a signal amplification circuit connected with the micro-processing circuit and a phase lock circuit connected with the signal amplification circuit, wherein an output end of the phase lock circuit is connected with a pulse amplification trigger circuit. Through the effect of pulse amplification trigger circuit, the high-stability voltage-controlled oscillator of the invention could avoid a false triggering phenomenon and improving fidelity of an output signal.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering.
Background technology
Along with the development of communication, voltage controlled oscillator is widely used in the communication equipments such as radio broadcasting, for generation of electromagnetic wave.But the frequency of oscillation that current voltage controlled oscillator exports is unstable, this is easy to the existing picture occurring signal of communication distortion.
Summary of the invention
The object of the invention is to the defect overcoming the frequency of oscillation instability that current voltage controlled oscillator exports, a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering is provided.
The following technical scheme of object of the present invention realizes: a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering, it comprises oscillating circuit, the micro-processor interface circuit be connected with oscillating circuit, the signal amplification circuit be connected with micro-processor interface circuit, the phase lock circuitry be connected with signal amplification circuit, in order to reach object of the present invention, the present invention is also connected with pulse amplifying circuits for triggering at the output of phase lock circuitry.
Further, described pulse amplifying circuits for triggering are by amplification chip U1, NOR gate A1, flip chip U2, be serially connected in the resistance R20 between the D pin of amplification chip U1 and SD pin, P pole is connected with the CD pin of amplification chip U1, the diode D1 that N pole is then connected with the IN pin of flip chip U2 after polar capacitor C8, the output of one end AND OR NOT gate A1 is connected, the resistance R21 that the other end is then connected with the CON pin of flip chip U2, and negative pole is connected with CAP pin with the HOLD pin of flip chip U2 respectively, the polar capacitor C9 of plus earth forms, the CLK pin of described amplification chip U1 is all connected with phase lock circuitry with CD pin, the negative pole of its Q2 pin then AND OR NOT gate A1 is connected, the positive pole of its Q1 pin then AND OR NOT gate A1 is connected, the negative pole of described NOR gate A1 is connected with the N pole of diode D1, the REF pin ground connection of described flip chip U2, its OUT pin together with HOLD pin as the output of these pulse amplifying circuits for triggering.
Described phase lock circuitry is by triode Q6, and triode Q7, triode Q8, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, polar capacitor C6 and polar capacitor C7 form; Wherein, resistance R14, resistance R15, resistance R16, one end of resistance R17, resistance R18 is all connected with the base stage of triode Q8, and the other end of resistance R18 is then connected with the collector electrode of triode Q8, the other end of resistance R17 is connected with the collector electrode of triode Q7, the other end of resistance R16 is connected with the base stage of triode Q6, the other end of resistance R15 is connected with the base stage of triode Q7, the other end of resistance R14 is connected with the collector electrode of triode Q6; One end of described resistance R19 is connected with the base stage of triode Q8, its other end is connected with the emitter of triode Q7, the positive pole of polar capacitor C7 is connected with the emitter of triode Q8, its negative pole is connected with the base stage of triode Q6, the positive pole of polar capacitor C6 is connected with the base stage of triode Q7, its negative pole is connected with the collector electrode of triode Q6, and the collector electrode of described triode Q8 is respectively with the emitter of triode Q7 and the CD pin of amplification chip U1 is connected, its base stage is then connected with the CLK pin of amplification chip U1; The emitter of described triode Q7 is connected with the emitter of triode Q6; The collector and emitter of described triode Q6 is all connected with signal amplification circuit.
Described oscillating circuit is by oscillistor T, triode Q1, triode Q2, the resistance R1 that one end is connected with the base stage of triode Q1, the other end is connected with the collector electrode of triode Q1 after resistance R2, positive pole is connected with the base stage of triode Q1, the polar capacitor C1 of minus earth, one end is connected with the emitter of triode Q1, the resistance R3 of other end ground connection, and the polar capacitor C2 between the emitter and collector being serially connected in triode Q1 forms; Between the base stage that the two ends of described oscillistor T are serially connected in triode Q1 and collector electrode, the base stage of triode Q2 is connected with triode Q1 collector electrode, its grounded emitter, collector electrode are then connected with micro-processor interface circuit, and resistance R1 is connected with external power source and micro-processor interface circuit respectively with the tie point of resistance R2.
Described micro-processor interface circuit comprises resistance R4, resistance R5, resistance R6, and triode Q3; One end of resistance R4 is connected with the collector electrode of triode Q3, other end ground connection after resistance R5, and one end of resistance R6 is connected with the emitter of triode Q3, its other end ground connection; The base stage of described triode Q3 is simultaneously with the collector electrode of triode Q2 and resistance R4 is connected with the tie point of resistance R5, its collector electrode is then connected with the tie point of resistance R2 with resistance R1, its emitter is also connected with amplifying circuit.
Described amplifying circuit is by triode Q4, triode Q5, negative pole is connected with the emitter of triode Q3, the polar capacitor C3 that positive pole is connected with the base stage of triode Q4 after resistance R7, one end is connected with the base stage of triode Q4, the resistance R11 that the other end is then connected with the emitter of triode Q5 after resistance R12, one end is connected with the base stage of triode Q4, the resistance R10 that the other end is connected with the emitter of triode Q5, negative pole is connected with the emitter of triode Q5, the polar capacitor C5 that positive pole is connected with the collector electrode of triode Q5 after resistance R13, positive pole is connected with the collector electrode of triode Q5, the polar capacitor C4 of minus earth, one end is connected with the base stage of triode Q5, the resistance R8 that the other end is connected with the collector electrode of triode Q5, and form with the resistance R9 that resistance R8 is in parallel, the collector electrode of described triode Q4 is connected with the base stage of triode Q5, its grounded emitter, and the collector electrode of triode Q5 is connected with the negative pole of polar capacitor C6, and the positive pole of polar capacitor C5 is then connected with the emitter of triode Q6.
In order to reach better implementation result, described amplification chip U1 is preferably 74LS74 integrated circuit, and flip chip U2 is then preferably LF398 integrated circuit and realizes.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the present invention is provided with phase lock circuitry, and it can make the frequency of oscillation stability of output higher, avoids signal of communication distortion.
(2) the present invention is provided with amplifying circuit, makes the signal of output more clear.
(3) the present invention is by the effect of pulse amplifying circuits for triggering, and the present invention can be avoided to occur the existing picture of erroneous trigger, improves the fidelity of the present invention's output signal.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the present invention includes oscillating circuit, the micro-processor interface circuit be connected with oscillating circuit, the signal amplification circuit be connected with micro-processor interface circuit, the phase lock circuitry be connected with signal amplification circuit, in order to reach object of the present invention, the present invention is also connected with pulse amplifying circuits for triggering at the output of phase lock circuitry.
Wherein, pulse amplifying circuits for triggering are emphasis place of the present invention, and it is by amplification chip U1, NOR gate A1, flip chip U2, resistance R20, resistance R21, polar capacitor C8, and polar capacitor C9 and diode D1 forms.During connection, resistance R20 is serially connected between the D pin of amplification chip U1 and SD pin, the P pole of diode D1 is connected with the CD pin of amplification chip U1, its N pole is then connected with the IN pin of flip chip U2 after polar capacitor C8, the output of one end AND OR NOT gate A1 of resistance R21 is connected, its other end is then connected with the CON pin of flip chip U2, and the negative pole of polar capacitor C9 is connected with CAP pin with the HOLD pin of flip chip U2 respectively, its plus earth.The CLK pin of described amplification chip U1 is all connected with phase lock circuitry with CD pin, the negative pole of its Q2 pin then AND OR NOT gate A1 is connected, the positive pole of its Q1 pin then AND OR NOT gate A1 is connected.The negative pole of described NOR gate A1 is connected with the N pole of diode D1; The REF pin ground connection of described flip chip U2, its OUT pin together with HOLD pin as the output of these pulse amplifying circuits for triggering.
After oscillator signal input is come in, triggered by flip chip U2 again after the amplification process of amplification chip U1.This polar capacitor C9 is high order filtering polar capacitor, and it can prevent circuit from occurring false touch discovery picture, thus the signal that the present invention is exported is more stable.In order to better implement the present invention, this amplification chip U1 is preferably 74LS74 integrated circuit, and flip chip U2 then preferentially adopts LF398 integrated circuit to realize.
This phase lock circuitry is by triode Q6, and triode Q7, triode Q8, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, polar capacitor C6 and polar capacitor C7 form.
Wherein, resistance R14, resistance R15, resistance R16, one end of resistance R17, resistance R18 is all connected with the base stage of triode Q8, and the other end of resistance R18 is then connected with the collector electrode of triode Q8, the other end of resistance R17 is connected with the collector electrode of triode Q7, the other end of resistance R16 is connected with the base stage of triode Q6, the other end of resistance R15 is connected with the base stage of triode Q7, the other end of resistance R14 is connected with the collector electrode of triode Q6.One end of described resistance R19 is connected with the base stage of triode Q8, its other end is connected with the emitter of triode Q7.The positive pole of polar capacitor C7 is connected with the emitter of triode Q8, its negative pole is connected with the base stage of triode Q6.The positive pole of polar capacitor C6 is connected with the base stage of triode Q7, its negative pole is connected with the collector electrode of triode Q6.The collector electrode of described triode Q8 is respectively with the emitter of triode Q7 and the CD pin of amplification chip U1 is connected, its base stage is then connected with the CLK pin of amplification chip U1.The emitter of described triode Q7 is connected with the emitter of triode Q6; The collector and emitter of described triode Q6 is all connected with signal amplification circuit.Phase lock circuitry can locking frequency phase place, makes frequency of oscillation more stable, avoids signal of communication to cause distortion because of frequency fluctuation.
This oscillating circuit is for generation of electromagnetic wave, it is by oscillistor T, triode Q1, triode Q2, the resistance R1 that one end is connected with the base stage of triode Q1, the other end is connected with the collector electrode of triode Q1 after resistance R2, positive pole is connected with the base stage of triode Q1, the polar capacitor C1 of minus earth, and one end is connected with the emitter of triode Q1, the resistance R3 of other end ground connection, and the polar capacitor C2 between the emitter and collector being serially connected in triode Q1 forms.Between the base stage that the two ends of described oscillistor T are serially connected in triode Q1 and collector electrode, the base stage of triode Q2 is connected with triode Q1 collector electrode, its grounded emitter, collector electrode are then connected with micro-processor interface circuit, and resistance R1 is connected with external power source and micro-processor interface circuit respectively with the tie point of resistance R2.
Microprocessor carries out process to the electromagnetic wave that oscillating circuit produces and comprises resistance R4, resistance R5, resistance R6, and triode Q3.During connection, one end of resistance R4 is connected with the collector electrode of triode Q3, other end ground connection after resistance R5.One end of resistance R6 is connected with the emitter of triode Q3, its other end ground connection.The base stage of described triode Q3 is simultaneously with the collector electrode of triode Q2 and resistance R4 is connected with the tie point of resistance R5, its collector electrode is then connected with the tie point of resistance R2 with resistance R1, its emitter is also connected with amplifying circuit.
Described amplifying circuit is by triode Q4, triode Q5, negative pole is connected with the emitter of triode Q3, the polar capacitor C3 that positive pole is connected with the base stage of triode Q4 after resistance R7, one end is connected with the base stage of triode Q4, the resistance R11 that the other end is then connected with the emitter of triode Q5 after resistance R12, one end is connected with the base stage of triode Q4, the resistance R10 that the other end is connected with the emitter of triode Q5, negative pole is connected with the emitter of triode Q5, the polar capacitor C5 that positive pole is connected with the collector electrode of triode Q5 after resistance R13, positive pole is connected with the collector electrode of triode Q5, the polar capacitor C4 of minus earth, one end is connected with the base stage of triode Q5, the resistance R8 that the other end is connected with the collector electrode of triode Q5, and form with the resistance R9 that resistance R8 is in parallel.The collector electrode of described triode Q4 is connected with the base stage of triode Q5, its grounded emitter.The collector electrode of triode Q5 is connected with the negative pole of polar capacitor C6, and the positive pole of polar capacitor C5 is then connected with the emitter of triode Q6.After amplifying circuit process, the signal exported is more clear.
As mentioned above, just well the present invention can be realized.
Claims (6)
1. based on a high stability voltage controlled oscillator for pulse amplifying circuits for triggering, it is by oscillating circuit, the micro-processor interface circuit be connected with oscillating circuit, the signal amplification circuit be connected with micro-processor interface circuit, and the phase lock circuitry be connected with signal amplification circuit forms; It is characterized in that: be also connected with pulse amplifying circuits for triggering at the output of phase lock circuitry; Described pulse amplifying circuits for triggering are by amplification chip U1, NOR gate A1, flip chip U2, be serially connected in the resistance R20 between the D pin of amplification chip U1 and SD pin, the diode D1 that P pole is connected with the CD pin of amplification chip U1, N pole is then connected with the IN pin of flip chip U2 after polar capacitor C8, the resistance R21 that the output of one end AND OR NOT gate A1 is connected, the other end is then connected with the CON pin of flip chip U2, and negative pole is connected with CAP pin with the HOLD pin of flip chip U2 respectively, the polar capacitor C9 of plus earth forms; The CLK pin of described amplification chip U1 is all connected with phase lock circuitry with CD pin, the negative pole of its Q2 pin then AND OR NOT gate A1 is connected, the positive pole of its Q1 pin then AND OR NOT gate A1 is connected; The negative pole of described NOR gate A1 is connected with the N pole of diode D1; The REF pin ground connection of described flip chip U2, its OUT pin together with HOLD pin as the output of these pulse amplifying circuits for triggering.
2. a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering according to claim 1, it is characterized in that: described phase lock circuitry is by triode Q6, triode Q7, triode Q8, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, polar capacitor C6 and polar capacitor C7 form; Wherein, resistance R14, resistance R15, resistance R16, one end of resistance R17, resistance R18 is all connected with the base stage of triode Q8, and the other end of resistance R18 is then connected with the collector electrode of triode Q8, the other end of resistance R17 is connected with the collector electrode of triode Q7, the other end of resistance R16 is connected with the base stage of triode Q6, the other end of resistance R15 is connected with the base stage of triode Q7, the other end of resistance R14 is connected with the collector electrode of triode Q6; One end of described resistance R19 is connected with the base stage of triode Q8, its other end is connected with the emitter of triode Q7, the positive pole of polar capacitor C7 is connected with the emitter of triode Q8, its negative pole is connected with the base stage of triode Q6, the positive pole of polar capacitor C6 is connected with the base stage of triode Q7, its negative pole is connected with the collector electrode of triode Q6, and the collector electrode of described triode Q8 is respectively with the emitter of triode Q7 and the CD pin of amplification chip U1 is connected, its base stage is then connected with the CLK pin of amplification chip U1; The emitter of described triode Q7 is connected with the emitter of triode Q6; The collector and emitter of described triode Q6 is all connected with signal amplification circuit.
3. a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering according to claim 2, it is characterized in that: described oscillating circuit is by oscillistor T, triode Q1, triode Q2, one end is connected with the base stage of triode Q1, the resistance R1 that the other end is connected with the collector electrode of triode Q1 after resistance R2, positive pole is connected with the base stage of triode Q1, the polar capacitor C1 of minus earth, one end is connected with the emitter of triode Q1, the resistance R3 of other end ground connection, polar capacitor C2 between the emitter and collector being serially connected in triode Q1 forms, between the base stage that the two ends of described oscillistor T are serially connected in triode Q1 and collector electrode, the base stage of triode Q2 is connected with triode Q1 collector electrode, its grounded emitter, collector electrode are then connected with micro-processor interface circuit, and resistance R1 is connected with external power source and micro-processor interface circuit respectively with the tie point of resistance R2.
4. a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering according to claim 3, is characterized in that: described micro-processor interface circuit comprises resistance R4, resistance R5, resistance R6, and triode Q3; One end of resistance R4 is connected with the collector electrode of triode Q3, other end ground connection after resistance R5, and one end of resistance R6 is connected with the emitter of triode Q3, its other end ground connection; The base stage of described triode Q3 is simultaneously with the collector electrode of triode Q2 and resistance R4 is connected with the tie point of resistance R5, its collector electrode is then connected with the tie point of resistance R2 with resistance R1, its emitter is also connected with amplifying circuit.
5. a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering according to claim 4, it is characterized in that: described amplifying circuit is by triode Q4, triode Q5, negative pole is connected with the emitter of triode Q3, the polar capacitor C3 that positive pole is connected with the base stage of triode Q4 after resistance R7, one end is connected with the base stage of triode Q4, the resistance R11 that the other end is then connected with the emitter of triode Q5 after resistance R12, one end is connected with the base stage of triode Q4, the resistance R10 that the other end is connected with the emitter of triode Q5, negative pole is connected with the emitter of triode Q5, the polar capacitor C5 that positive pole is connected with the collector electrode of triode Q5 after resistance R13, positive pole is connected with the collector electrode of triode Q5, the polar capacitor C4 of minus earth, one end is connected with the base stage of triode Q5, the resistance R8 that the other end is connected with the collector electrode of triode Q5, and form with the resistance R9 that resistance R8 is in parallel, the collector electrode of described triode Q4 is connected with the base stage of triode Q5, its grounded emitter, and the collector electrode of triode Q5 is connected with the negative pole of polar capacitor C6, and the positive pole of polar capacitor C5 is then connected with the emitter of triode Q6.
6. a kind of high stability voltage controlled oscillator based on pulse amplifying circuits for triggering according to any one of Claims 1 to 5, is characterized in that: described amplification chip U1 is 74LS74 integrated circuit, described flip chip U2 is then LF398 integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284299.2A CN104901689A (en) | 2014-11-19 | 2015-05-28 | High-stability voltage-controlled oscillator based on pulse amplification trigger circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410665764.2A CN104467830A (en) | 2014-11-19 | 2014-11-19 | High-stability voltage-controlled oscillator |
| CN2014106657642 | 2014-11-19 | ||
| CN201510284299.2A CN104901689A (en) | 2014-11-19 | 2015-05-28 | High-stability voltage-controlled oscillator based on pulse amplification trigger circuit |
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| CN104901689A true CN104901689A (en) | 2015-09-09 |
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| CN201410665764.2A Pending CN104467830A (en) | 2014-11-19 | 2014-11-19 | High-stability voltage-controlled oscillator |
| CN201510284299.2A Withdrawn CN104901689A (en) | 2014-11-19 | 2015-05-28 | High-stability voltage-controlled oscillator based on pulse amplification trigger circuit |
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| CN201410665764.2A Pending CN104467830A (en) | 2014-11-19 | 2014-11-19 | High-stability voltage-controlled oscillator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104467830A (en) * | 2014-11-19 | 2015-03-25 | 成都创图科技有限公司 | High-stability voltage-controlled oscillator |
| CN108806658B (en) * | 2017-05-03 | 2024-04-16 | 深圳市帝迈生物技术有限公司 | Blood analyzer and buzzer volume adjustment driving circuit thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050275754A1 (en) * | 2002-07-31 | 2005-12-15 | Nicolas Quesne | Method and circuit for providing a horizontal scan signal for a television set |
| CN104467830A (en) * | 2014-11-19 | 2015-03-25 | 成都创图科技有限公司 | High-stability voltage-controlled oscillator |
| CN104464581A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | High-definition image displaying system based on linear driving |
| CN204316487U (en) * | 2014-11-19 | 2015-05-06 | 成都创图科技有限公司 | A kind of voltage controlled oscillator of high stability |
-
2014
- 2014-11-19 CN CN201410665764.2A patent/CN104467830A/en active Pending
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2015
- 2015-05-28 CN CN201510284299.2A patent/CN104901689A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050275754A1 (en) * | 2002-07-31 | 2005-12-15 | Nicolas Quesne | Method and circuit for providing a horizontal scan signal for a television set |
| CN104467830A (en) * | 2014-11-19 | 2015-03-25 | 成都创图科技有限公司 | High-stability voltage-controlled oscillator |
| CN204316487U (en) * | 2014-11-19 | 2015-05-06 | 成都创图科技有限公司 | A kind of voltage controlled oscillator of high stability |
| CN104464581A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | High-definition image displaying system based on linear driving |
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Application publication date: 20150909 |