CN106788265A - Oscillating circuit and 3D testers - Google Patents
Oscillating circuit and 3D testers Download PDFInfo
- Publication number
- CN106788265A CN106788265A CN201611175246.8A CN201611175246A CN106788265A CN 106788265 A CN106788265 A CN 106788265A CN 201611175246 A CN201611175246 A CN 201611175246A CN 106788265 A CN106788265 A CN 106788265A
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- Prior art keywords
- resistance
- circuit unit
- electric capacity
- self
- feedback
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
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- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The invention discloses a kind of oscillating circuit, it is characterised in that the oscillating circuit includes working power input, self-maintained circuit unit, intersects negative-feedback circuit unit and oscillator signal output end;Working power input is used to be provided for the oscillating circuit supply voltage of work;Self-maintained circuit unit is used to produce an oscillator signal;Intersecting negative-feedback circuit unit is used to carry out intersection negative feedback control to self-maintained circuit unit, to stablize the frequency of the oscillator signal produced by self-maintained circuit unit;Oscillator signal output end is used to export the oscillator signal produced by self-maintained circuit unit.The invention also discloses a kind of 3D testers.Oscillating circuit of the present invention can stablize the frequency of the oscillator signal produced by self-maintained circuit unit;Also, oscillating circuit of the present invention also has the advantages that simple structure.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of oscillating circuit and 3D testers.
Background technology
3D testers are required for using self-maintained circuit when 3D tests are carried out, however, in the prior art, 3D tests
Self-maintained circuit in instrument is unable to the oscillator signal of outputting stable frequency, its oscillator signal for being exported, and shakes larger, so that
The testing requirement of 3D testers cannot be met.
The content of the invention
It is a primary object of the present invention to provide a kind of oscillating circuit, it is intended to solution must not outputting stable frequency vibration letter
Number problem.
To achieve these goals, the present invention provides a kind of oscillating circuit, and the oscillating circuit is input into including working power
End, self-maintained circuit unit, intersection negative-feedback circuit unit and oscillator signal output end;Wherein:
The working power input, the supply voltage for providing work for the oscillating circuit;
The self-maintained circuit unit, for producing an oscillator signal;
The intersection negative-feedback circuit unit, for carrying out intersection negative feedback control to the self-maintained circuit unit,
To stablize the frequency of the oscillator signal;
The oscillator signal output end, for exporting the oscillator signal.
Preferably, the power end of the self-maintained circuit unit is connected with the working power input, the self-excitation
First feedback voltage signal output end of oscillation circuit unit is connected with the first input end for intersecting negative-feedback circuit unit,
Second feedback voltage signal output end of the self-maintained circuit unit intersects the second defeated of negative-feedback circuit unit with described
Enter end connection, the first feedback voltage signal input of the self-maintained circuit unit intersects negative-feedback circuit unit with described
The connection of the first output end, the second feedback voltage signal input of the self-maintained circuit unit intersects negative-feedback with described
The second output end connection of circuit unit, the output end of the self-maintained circuit unit connects with the oscillator signal output end
Connect.
Preferably, the intersection negative-feedback circuit unit includes first resistor, second resistance, the first electric capacity and the second electricity
Hold;Wherein:
The first end of the first resistor respectively with the first end and the self-maintained circuit unit of first electric capacity
The first feedback voltage signal output end connection, the first resistor the second end ground connection;Second end of first electric capacity with
The first feedback voltage signal input connection of the self-maintained circuit unit;The first end of the second resistance respectively with institute
State the second feedback voltage signal output end connection of the first end and the self-maintained circuit unit of the second electric capacity, described second
The second end ground connection of resistance;Second feedback voltage signal of the second end of second electric capacity and the self-maintained circuit unit
Input is connected.
Preferably, the self-maintained circuit unit includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the
Three electric capacity, the 4th electric capacity, the first NPN triode and the second NPN triode;Wherein:
The of the first end of the 3rd resistor, the first end of the 4th resistance, the first end of the 5th resistance and the 6th resistance
One end is connected with the working power input,
Second end of the 3rd resistor respectively with the first end and the collection of first NPN triode of the 3rd electric capacity
Electrode is connected,
Second end of the 4th resistance the second end, the base of second NPN triode respectively with the 3rd electric capacity
The first output end connection of pole and the intersection negative-feedback circuit unit,
Second end of the 5th resistance first end, the base of first NPN triode respectively with the 4th electric capacity
The second output end connection of pole and the intersection negative-feedback circuit unit;
Second end of the 6th resistance the second end respectively with the 4th electric capacity and the collection of second NPN triode
Electrode is connected;
The colelctor electrode of second NPN triode is also connected with the oscillator signal output end.
Preferably, the oscillating circuit also includes the 7th resistance, first end and the 2nd NPN tri- of the 7th resistance
Pole pipe colelctor electrode connection, the second end of the 7th resistance be connected with the oscillator signal output end.
Preferably, the resistance of the first resistor is electric less than or equal to the 5% of the resistance of the 3rd resistor, described second
5% of the resistance of resistance less than or equal to the resistance of the 6th resistance.
Preferably, the capacitance of first electric capacity is less than or equal to the capacitance of the 3rd electric capacity, and described second is electric
Capacitance of the capacitance of appearance less than or equal to the 4th electric capacity.
Preferably, the resistance of the first resistor is equal to the resistance of the second resistance, resistance of the 3rd resistor etc.
In the resistance of the 6th resistance, the resistance of the 4th resistance is equal to the resistance of the 5th resistance.
Preferably, the capacitance of first electric capacity is equal to the capacitance of second electric capacity, the electricity of the 3rd electric capacity
Capacitance is equal to the capacitance of the 4th electric capacity.
Additionally, to achieve these goals, the present invention also provides a kind of 3D testers, the 3D testers include as above institute
The oscillating circuit stated.
The present invention provides a kind of oscillating circuit, the oscillating circuit include working power input, self-maintained circuit unit,
Intersect negative-feedback circuit unit and oscillator signal output end;The working power input is used to provide work for the oscillating circuit
The supply voltage of effect;The self-maintained circuit unit is used to produce an oscillator signal;The intersection negative-feedback circuit unit
For carrying out intersection negative feedback control to the self-maintained circuit unit, to stablize the frequency of the oscillator signal;It is described to shake
Signal output part is swung for exporting the oscillator signal.Oscillating circuit of the present invention is due to being provided with the intersection negative-feedback circuit list
Unit, the intersection negative-feedback circuit unit can carry out intersection negative feedback control to the self-maintained circuit unit, so that
Obtain frequency more the stabilization of the oscillator signal produced by the self-maintained circuit unit;Meanwhile, present invention vibration electricity
Road also has the advantages that simple structure and easily realizes.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the modular structure schematic diagram of the embodiment of oscillating circuit of the present invention;
Fig. 2 is the electrical block diagram of the embodiment of oscillating circuit of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The present invention provides a kind of oscillating circuit, and reference picture 1, Fig. 1 is the modular structure of the embodiment of oscillating circuit of the present invention
Schematic diagram, in the present embodiment, the Fig. 1 is that the modular structure schematic diagram of the embodiment of oscillating circuit of the present invention includes that working power is defeated
Enter end 101, self-maintained circuit unit 102, intersect negative-feedback circuit unit 103 and oscillator signal output end 104.
Specifically, in the present embodiment, the working power input 101, for providing work for the present embodiment oscillating circuit
The supply voltage of effect;
The self-maintained circuit unit 102, for producing an oscillator signal;
The intersection negative-feedback circuit unit 103, for carrying out intersection negative-feedback to the self-maintained circuit unit 102
Control, to stablize the frequency of the oscillator signal produced by the self-maintained circuit unit 102;
The oscillator signal output end 104, for exporting the oscillator signal.
In the present embodiment, the power end of the self-maintained circuit unit 102 connects with the working power input 101
Connect, the first feedback voltage signal output end of the self-maintained circuit unit 102 intersects negative-feedback circuit unit 103 with described
First input end connection, the second feedback voltage signal output end of the self-maintained circuit unit 102 with it is described intersects bear
The second input connection of feedback circuit unit 103, the first feedback voltage signal input of the self-maintained circuit unit 102
End is connected with first output end for intersecting negative-feedback circuit unit 103, and the second of the self-maintained circuit unit 102 is anti-
Feedthrough voltage signal input part is connected with second output end for intersecting negative-feedback circuit unit 103, the self-maintained circuit
The output end of unit 102 is connected with the oscillator signal output end 104.
Fig. 2 is the electrical block diagram of the embodiment of oscillating circuit of the present invention, in the lump referring to Figures 1 and 2, the present embodiment
In, the intersection negative-feedback circuit unit 103 includes first resistor R1, second resistance R2, the first electric capacity C1 and the second electric capacity C2.
Specifically, the first end of the first resistor R1 is the first input end of the intersection negative-feedback circuit unit 103,
The first end of the first resistor R1 is connected with the first feedback voltage signal output end of the self-maintained circuit unit 102,
First end of the first end of the first resistor R1 also with the first electric capacity C1 is connected;Second termination of the first resistor R1
Ground;Second end of the first electric capacity C1 is the first output end of the intersection negative-feedback circuit unit 103, first electric capacity
Second end of C1 is connected with the first feedback voltage signal input of the self-maintained circuit unit 102;The second resistance
The first end of R2 is the second input of the intersection negative-feedback circuit unit 103, the first end of the second resistance R2 and institute
State the second feedback voltage signal output end connection of self-maintained circuit unit 102, the first end of the second resistance R2 also with
The first end connection of the second electric capacity C2, the second end ground connection of the second resistance R2;Second end of the second electric capacity C2
For the second output end of the intersection negative-feedback circuit unit 103, second end of the second electric capacity C2 and the self-oscillation
The second feedback voltage signal input connection of circuit unit 102.
In the present embodiment, the self-maintained circuit unit 102 includes 3rd resistor R3, the 4th resistance T4, the 5th resistance
R5, the 6th resistance T6, the 3rd electric capacity C3, the 4th electric capacity C4, the first NPN triode Q1 and the second NPN triode Q2.
Specifically, the first end of the 3rd resistor R3, the first end of the 4th resistance R4, the first end of the 5th resistance R5 and
The first end of the 6th resistance R6 is the power end of the self-maintained circuit unit 102, the first end of the 3rd resistor R3,
The first end of the first end, the first end of the 5th resistance R5 and the 6th resistance R6 of the 4th resistance R4 is input into the working power
End connection;Second end of the 3rd resistor R3 respectively with the first end and first NPN triode of the 3rd electric capacity C3
The colelctor electrode connection of Q1, second end of the 4th resistance R4 the second end, the 2nd NPN respectively with the 3rd electric capacity C3
First output end (the second of i.e. described first electric capacity C1 of the base stage of triode Q2 and the intersection negative-feedback circuit unit 103
End) connection;Second end of the 5th resistance R5 first end, first NPN triode respectively with the 4th electric capacity C4
Second output end (second end of i.e. described second electric capacity C2) of the base stage of Q1 and the intersection negative-feedback circuit unit 103 is even
Connect;Second end of the 6th resistance R6 respectively with second end of the 4th electric capacity C4 and the second NPN triode Q2
Colelctor electrode is connected;
In the present embodiment, the first of the extremely described self-maintained circuit unit 102 of transmitting of first NPN triode Q1
Feedback voltage signal output end, the emitter stage of first NPN triode Q1 intersects the of negative-feedback circuit unit 103 with described
One input is connected, i.e., the emitter stage of described first NPN triode Q1 with described in described the intersection in negative-feedback circuit unit 103
The first end connection of first resistor R1;The extremely described self-maintained circuit unit 102 of transmitting of second NPN triode Q1
Second feedback voltage signal output end, the emitter stage of the second NPN triode Q2 intersects negative-feedback circuit unit 103 with described
The second input connection, i.e., the emitter stage of described second NPN triode Q2 intersects negative-feedback circuit unit 103 with described
The first end connection of the second resistance R2;
In the present embodiment, second end of the 3rd electric capacity C3 is the first feedback of the self-maintained circuit unit 102
Voltage signal inputs, second end of the 3rd electric capacity C3 and first output end for intersecting negative-feedback circuit unit 103
Connection, i.e., second end of described 3rd electric capacity C3 intersects the first electric capacity C1's in negative-feedback circuit unit 103 with described
Second end connects;
In the present embodiment, the first end of the 4th electric capacity C4 is the second feedback of the self-maintained circuit unit 102
Voltage signal inputs, the first end of the 4th electric capacity C4 and second output end for intersecting negative-feedback circuit unit 103
Connection, i.e., the first end of described 4th electric capacity C4 intersects the second electric capacity C2's in negative-feedback circuit unit 103 with described
Second end connects;
Further, in the present embodiment, colelctor electrode and the oscillator signal output end of the second NPN triode Q2
The 7th resistance R7 is also associated between 104.Specifically, the first end of the 7th resistance R7 and the second NPN triode Q2
Colelctor electrode connection, second end of the 7th resistance R7 be connected with the oscillator signal output end 104.
Further, in the present embodiment, because the intersection negative-feedback circuit unit 103 should ensure the self-oscillation
Being smoothed out for the oscillatory work of circuit unit 102, plays stablize shaking produced by the self-maintained circuit unit 102 again
The effect of the frequency of signal is swung, in the present embodiment, the resistance of the first resistor R1 is less than the resistance of the 3rd resistor R3,
The resistance of the second resistance R2 is less than the resistance of the 6th resistance R6.Preferably, in the present embodiment, the first resistor
The 5% of resistance of the resistance of R1 less than or equal to the 3rd resistor R3, the resistance of the second resistance R2 is less than or equal to institute
State the 5% of the resistance of the 6th resistance R6.
Further, in the present embodiment, the capacitance of the first electric capacity C1 is less than or equal to the 3rd electric capacity C3's
Capacitance, the capacitance of the capacitance less than or equal to the 4th electric capacity C4 of the second electric capacity C2.
Further, in the present embodiment, the resistance of the first resistor R1 is equal with the resistance of the second resistance R2, institute
The resistance for stating 3rd resistor R3 is equal with the resistance of the 6th resistance R6, the resistance of the 4th resistance R4 and the described 5th electricity
The resistance for hindering R5 is equal.
Further, in the present embodiment, the capacitance of the first electric capacity C1 is equal to the capacitance of the second electric capacity C2,
The capacitance of the 3rd electric capacity C3 is equal to the capacitance of the 4th electric capacity C4.
In addition, it is necessary to explanation, in order to the oscillatory work for ensureing the self-maintained circuit unit 102 is normally carried out
(to ensure that first NPN triode Q1 and the second NPN triode Q2 are operated in magnifying state), the present embodiment
In, the 3rd resistor R3 that is connected with the colelctor electrode of first NPN triode Q1 and with the second NPN triode Q2
The resistance of the 6th resistance R6 of colelctor electrode connection can not be excessive.
The operation principle of the present embodiment oscillating circuit is described in detail below:When the colelctor electrode of first NPN triode Q1
Voltage when uprising, the voltage that this is uprised is by the institute in the 3rd electric capacity C3 and the intersection negative-feedback circuit unit 103
The emitter stage that the first electric capacity C1 passes to first NPN triode Q1 is stated, now, due to the intersection negative-feedback circuit unit
103 negative feedback, the intersection negative-feedback circuit unit 103 can block the colelctor electrode electricity of first NPN triode Q1
The rising of pressure;Similarly, when the voltage of the colelctor electrode of the second NPN triode Q2 is uprised, the voltage that this is uprised is by described
The second electric capacity C2 in 4th electric capacity C4 and the intersection negative-feedback circuit unit 103 passes to second NPN triode
The emitter stage of Q2, now, due to the negative feedback of the intersection negative-feedback circuit unit 103, the intersection negative-feedback circuit
Unit 103 can block the rising of the collector voltage of the second NPN triode Q2, therefore, the intersection in the present embodiment
Negative-feedback circuit unit 103 serves the effect of the frequency of the oscillator signal for stablizing the output of self-maintained circuit unit 102.
In addition, in the present embodiment, the resistance of the 3rd resistor R3 being connected due to the colelctor electrode with first NPN triode Q1 with
And the resistance of the 6th resistance R6 being connected with the colelctor electrode of the second NPN triode Q2 is all smaller, therefore, the present embodiment
In, the negative-feedback feedback effect for intersecting negative-feedback circuit unit 103 will not cause the self-maintained circuit unit 102
There is failure of oscillation phenomenon.
The present embodiment oscillating circuit is due to being provided with the intersection negative-feedback circuit unit 103, the intersection negative-feedback electricity
Road unit 103 can carry out intersection negative feedback control to the self-maintained circuit unit 102, so that the self-oscillation
The frequency of the oscillator signal produced by circuit unit 102 more stabilization;Meanwhile, the present embodiment oscillating circuit also has knot
The advantage that structure simply and is easily realized.
The present invention also provides a kind of 3D testers, and the 3D testers include oscillating circuit, and the structure of the oscillating circuit can join
According to above-described embodiment, naturally, because the 3D testers of the present embodiment employ the technical scheme of above-mentioned oscillating circuit, because
This 3D tester has all of beneficial effect of above-mentioned oscillating circuit.
The preferred embodiments of the present invention are these are only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of oscillating circuit, it is characterised in that the oscillating circuit includes working power input, self-maintained circuit list
Unit, intersection negative-feedback circuit unit and oscillator signal output end;Wherein:
The working power input, the supply voltage for providing work for the oscillating circuit;
The self-maintained circuit unit, for producing an oscillator signal;
The intersection negative-feedback circuit unit, for carrying out intersection negative feedback control to the self-maintained circuit unit, with steady
The frequency of the fixed oscillator signal;
The oscillator signal output end, for exporting the oscillator signal.
2. oscillating circuit as claimed in claim 1, it is characterised in that the power end of the self-maintained circuit unit with it is described
Working power input is connected, the first feedback voltage signal output end of the self-maintained circuit unit with it is described intersects it is negative instead
Current feed circuit unit first input end connection, the second feedback voltage signal output end of the self-maintained circuit unit with it is described
Intersect the second input connection of negative-feedback circuit unit, the first feedback voltage signal input of the self-maintained circuit unit
End is connected with first output end for intersecting negative-feedback circuit unit, the second feedback voltage of the self-maintained circuit unit
Signal input part is connected with second output end for intersecting negative-feedback circuit unit, the output of the self-maintained circuit unit
End is connected with the oscillator signal output end.
3. oscillating circuit as claimed in claim 1, it is characterised in that the intersection negative-feedback circuit unit includes the first electricity
Resistance, second resistance, the first electric capacity and the second electric capacity;Wherein:
The first end of the first resistor is respectively with the of the first end of first electric capacity and the self-maintained circuit unit
One feedback voltage signal output end is connected, the second end ground connection of the first resistor;Second end of first electric capacity with it is described
The first feedback voltage signal input connection of self-maintained circuit unit;The first end of the second resistance is respectively with described
The second feedback voltage signal output end connection of the first end of two electric capacity and the self-maintained circuit unit, the second resistance
The second end ground connection;Second end of second electric capacity is input into the second feedback voltage signal of the self-maintained circuit unit
End connection.
4. oscillating circuit as claimed in claim 3, it is characterised in that the self-maintained circuit unit include 3rd resistor,
4th resistance, the 5th resistance, the 6th resistance, the 3rd electric capacity, the 4th electric capacity, the first NPN triode and the second NPN triode;Its
In:
The first end of the first end of the 3rd resistor, the first end, the first end of the 5th resistance and the 6th resistance of the 4th resistance
It is connected with the working power input,
Second end of the 3rd resistor respectively with the first end and the colelctor electrode of first NPN triode of the 3rd electric capacity
Connection,
Second end of the 4th resistance the second end respectively with the 3rd electric capacity, the base stage of second NPN triode and
The the first output end connection for intersecting negative-feedback circuit unit,
Second end of the 5th resistance first end respectively with the 4th electric capacity, the base stage of first NPN triode and
The the second output end connection for intersecting negative-feedback circuit unit;
Second end of the 6th resistance the second end respectively with the 4th electric capacity and the colelctor electrode of second NPN triode
Connection;
The colelctor electrode of second NPN triode is also connected with the oscillator signal output end.
5. oscillating circuit as claimed in claim 4, it is characterised in that the oscillating circuit also includes the 7th resistance, described the
The first end of seven resistance is connected with the colelctor electrode of second NPN triode, the second end of the 7th resistance and it is described vibration letter
The connection of number output end.
6. oscillating circuit as claimed in claim 4, it is characterised in that the resistance of the first resistor is less than or equal to described the
The 5% of the resistance of three resistance, the resistance of the second resistance is less than or equal to the 5% of the resistance of the 6th resistance.
7. oscillating circuit as claimed in claim 4, it is characterised in that the capacitance of first electric capacity is less than or equal to described
The capacitance of the 3rd electric capacity, the capacitance of the capacitance less than or equal to the 4th electric capacity of second electric capacity.
8. the oscillating circuit as any one of claim 4 to 7, it is characterised in that the resistance of the first resistor is equal to
The resistance of the second resistance, the resistance of the 3rd resistor is equal to the resistance of the 6th resistance, the resistance of the 4th resistance
Resistance of the value equal to the 5th resistance.
9. the oscillating circuit as any one of claim 4 to 7, it is characterised in that capacitance of first electric capacity etc.
In the capacitance of second electric capacity, the capacitance of the 3rd electric capacity is equal to the capacitance of the 4th electric capacity.
10. a kind of 3D testers, it is characterised in that the 3D testers include the vibration any one of claim 1 to 9
Circuit.
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CN201611175246.8A CN106788265B (en) | 2016-12-15 | 2016-12-15 | Oscillation circuit and 3D tester |
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2016
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US2857512A (en) * | 1953-03-20 | 1958-10-21 | Rca Corp | Monostable multivibrator |
GB916994A (en) * | 1960-01-14 | 1963-01-30 | Atomic Energy Authority Uk | Relaxation oscillator |
CN2241839Y (en) * | 1995-11-29 | 1996-12-04 | 郭战河 | Miniature solid high pressure module for use in air purifier |
CN201957315U (en) * | 2011-04-03 | 2011-08-31 | 阮树成 | Solar energy eight push-pull oscillation high voltage sodium lamp |
CN104270114A (en) * | 2014-09-03 | 2015-01-07 | 华南理工大学 | A multivibrator circuit using low capacitance and high resistance |
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