CN104104365A - Copy generation circuit of drive pulses - Google Patents
Copy generation circuit of drive pulses Download PDFInfo
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- CN104104365A CN104104365A CN201410369282.2A CN201410369282A CN104104365A CN 104104365 A CN104104365 A CN 104104365A CN 201410369282 A CN201410369282 A CN 201410369282A CN 104104365 A CN104104365 A CN 104104365A
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- voltage
- source
- drive pulse
- driving pulse
- diode
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Abstract
The invention discloses a copy generation circuit of drive pulses. The copy generation circuit of the drive pulses is shown in figure 1. A source input drive pulse can be used to directly generate an output drive pulse at two ends of a diode D in the copy generation circuit 2 through a network composed of a resistor R, a capacitor C and the diode D and shown in the figure 1. Voltage waveform of the output drive pulse newly generated is identical with voltage waveform of the source input drive pulse, and the output drive pulse seems to be copied out from the source input drive pulse. The copy generation circuit 2 is characterized in that electric potential of the minimum potential point (K point) is higher than electric potential of a negative electrode (B point) of the source input drive pulse exactly by voltage numerical value of a fixed direct current voltage source E, the fixed direct current voltage source E can also be a direct current voltage source which is slowly changing in voltage, and a criterion of slow change of the voltage is that changing frequency of the voltage is less than frequency of the source drive pulse.
Description
Technical field
The present invention relates to circuit structure, specifically a kind of circuit that driving pulse can be generated with replication form.
Background technology
In electronic circuit, people usually need to use the driving pulse that multichannel is identical, the driving pulse that these multichannels are identical, some requirements are mutually isolated on current potential, the maintenance that needs having has fixed potential difference each other, this obtain these need driving pulse, the conventional method of people has: 1, adopt transformer isolation drive; 2, light-coupled isolation drives.And light-coupled isolation driving also needs to increase in addition isolated controlling power supply; Although can realize required function, can cause circuit complexity, components and parts increase, thereby cause that cost increases the problem increasing with failure rate.
Summary of the invention
The technical problem solving:
The technical problem to be solved in the present invention is: how according to the feature of physical circuit, solve the problem that produces identical driving pulse in the circuit of different reference potentials by simple method.
Solution:
The invention provides a kind of circuit that driving pulse overall level can be moved on together, thereby in required circuit, directly obtained the driving pulse needing.As shown in Figure 1, the part wherein working is physical circuit: the RCD network being made up of resistance R, capacitor C and diode D.
Invention beneficial effect:
The present invention has greatly simplified drive circuit, circuit cost be reduced, reliability is improved.
Brief description of the drawings
Fig. 1, source input driving pulse copy generation circuit diagram
Fig. 2, source input driving pulse voltage V
aBoscillogram
Fig. 3, output driving pulse voltage V
doscillogram
Fig. 4, the potential waveform figure that H is ordered
Embodiment
One, circuit basic composition and structure
As shown in Figure 1, the generation circuit that copies of driving pulse of the present invention is made up of following four part institutes:
(1), driving pulse input circuit, also claims circuit 1, the drive pulse signal V of input
aB, also title source input driving pulse.
(2), direct voltage source E.The changeless voltage source of voltage, or the slowly direct voltage source of variation of voltage, criterion is slowly: the change frequency of E, much smaller than the frequency of source driving pulse, that is to say that the voltage value of E can slowly uprise or step-down.
(3), driving pulse output circuit, also claims circuit 2.The new driving pulse producing is from the two ends output of diode D, and cathode terminal is output "+" end, and anode tap is output "-" end.The formation of circuit 2 is: be made up of diode D and resistance R parallel connection.
(4), capacitor C, plays coupling.
The circuit structure feature of Fig. 1: join end to end successively and formed serial loop by above-mentioned four parts.
Two, the course of work
In Fig. 1, the Zero potential reference of establishing whole circuit is B point, i.e. V
b=0; Reference potential minimum point in circuit 2 is K point, and owing to there being the existence of fixing DC power supply (or gradual DC power supply) E, the current potential that K is ordered exceeds E than B point current potential all the time, so in following analysis, have all the time V
k=E.For easy analysis, suppose that all the time the forward conduction voltage drop of diode D is negligible.
In the following description, above-mentioned B point zero potential is also referred to as basic current potential, and the current potential that the potential minimum point K in circuit 2 is ordered is referred to as reference potential, and therefore circuit 2 is called as reference potential and exceeds the circuit of basic current potential E numerical value.
Source input driving pulse V
aBfrom 2 inputs of AB, V
aBwaveform as shown in Figure 2.
Within the 0-t1 time, voltage V
aBbe 0, source driving voltage is zero, because B point is Zero potential reference, so V
a=0; The anode of DC power supply E charges to capacitor C by diode D, is filled with very soon voltage E in capacitor C, i.e. voltage V in capacitor C
c=E, polarity is upper just lower negative, the current potential that H is ordered exceeds the voltage in capacitor C than A point current potential, i.e. V
h=V
a+ V
c=0+E=E.
At this moment the outputting drive voltage V obtaining from diode D two ends
hK=V
h-V
k=E-E=0, the numerical value of the source pulsed drive voltage of the numerical value of this driving voltage and input is in full accord, is zero volt.
Within the t1-t2 time, V
aBfor V
o, source driving voltage is V
o, the current potential that A point current potential is ordered than B exceeds V
o, V
a=V
o, because the voltage in capacitor C can not suddenly change, still have V
c=E, the current potential that H is ordered just becomes: V
h=V
a+ V
c=V
o+ E; The outputting drive voltage V obtaining from diode D two ends
hK=V
h-v
k=V
o+ E-E=V
o, the numerical value of the source pulsed drive voltage of the numerical value of this driving voltage and input is in full accord, is V
o.
Within the t2-t3 time, voltage V
aBbe 0, identical with the course of work in the 0-t1 time, circuit starts the new work period.
In Fig. 1, the effect of resistance R is: in the time that direct voltage source E is gradual direct voltage source, in the time of supply voltage E slow decreasing, in capacitor C, original fixed voltage E keeping is by high the virtual voltage numerical value of the DC power supply E than new, the part that voltage exceeds will be discharged by R, basically identical to reach the voltage value of voltage value on electric capacity and DC power supply E, guarantee that circuit normally works.
Three, conclusion
Reach a conclusion according to above analysis:
(1),, by the RCD network of the resistance R in Fig. 1, capacitor C and diode D composition, the diode D two ends in circuit 2 have produced new drive pulse signal, the drive pulse signal V that this is new
dvoltage waveform and the voltage waveform of source drive pulse signal in full accord, as shown in Figure 3.The negative pole of the drive pulse signal of this new generation is the potential minimum point K point in circuit 2, and K point current potential exceeds the voltage value of fixed voltage source E than the negative pole of source drive pulse signal (B point) current potential.This means: the function that circuit of the present invention has is: by above-mentioned RCD network, exceed than basic current potential at reference potential in the circuit of E value and can directly produce the drive pulse signal the same with source driving pulse.
(2), the point of the H in Fig. 1 has obtained by moving the pulse potential V after E value on input source driving pulse entirety current potential
h(B point current potential is defined as zero potential), as shown in Figure 4.
Claims (2)
1. what the present invention was a kind of driving pulse copies generation circuit, formed by three parts: source drive pulse signal input circuit, the direct voltage source E that voltage is fixed or voltage slowly changes, resistance R is in series with capacitor C with after diode D parallel connection and the RCD network (negative electrode one end of D must be connected with capacitor C) that forms again; Above-mentioned these three parts formation serial loop that is mutually serially connected, anode one end of wherein fixing the positive pole of direct voltage source E and the diode D of RCD network is connected, the negative pole of fixing direct voltage source E is connected with the negative pole of source drive pulse signal, and the positive pole of source drive pulse signal is connected with the unsettled other end of capacitor C; The invention is characterized in: by above-mentioned RCD interconnection network, obtained the driving pulse of new generation (diode cathode one end is for anodal at diode D two ends, anode one end is negative pole), the voltage waveform (ignoring the forward step-down of diode D) in full accord of the driving pulse of this new generation and source driving pulse, the overall current potential of the new driving pulse producing just exceeds the voltage value of fixing direct voltage source E than the overall current potential of source driving pulse.
2. based on claim 1, in RCD network, save resistance R, only realize with remaining CD serial connection network the object that produces new driving pulse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369282.2A CN104104365B (en) | 2014-07-30 | 2014-07-30 | A kind of duplication generation circuit of driving pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369282.2A CN104104365B (en) | 2014-07-30 | 2014-07-30 | A kind of duplication generation circuit of driving pulse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104104365A true CN104104365A (en) | 2014-10-15 |
| CN104104365B CN104104365B (en) | 2019-01-25 |
Family
ID=51672217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410369282.2A Active CN104104365B (en) | 2014-07-30 | 2014-07-30 | A kind of duplication generation circuit of driving pulse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104104365B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155162A (en) * | 2006-09-28 | 2008-04-02 | 冲电气工业株式会社 | Otdm-dpsk signal generator capable of detecting an optical carrier phase difference between optical pulses |
| US20100201399A1 (en) * | 2009-02-06 | 2010-08-12 | Dieter Metzner | Driver Circuit for a Two-Wire Conductor and Method for Generating Two Output Currents for a Two-Wire Conductor |
| JP2013090512A (en) * | 2011-10-20 | 2013-05-13 | Tdk Corp | Ramp signal generation circuit and ramp signal adjustment circuit |
-
2014
- 2014-07-30 CN CN201410369282.2A patent/CN104104365B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155162A (en) * | 2006-09-28 | 2008-04-02 | 冲电气工业株式会社 | Otdm-dpsk signal generator capable of detecting an optical carrier phase difference between optical pulses |
| US20100201399A1 (en) * | 2009-02-06 | 2010-08-12 | Dieter Metzner | Driver Circuit for a Two-Wire Conductor and Method for Generating Two Output Currents for a Two-Wire Conductor |
| JP2013090512A (en) * | 2011-10-20 | 2013-05-13 | Tdk Corp | Ramp signal generation circuit and ramp signal adjustment circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104104365B (en) | 2019-01-25 |
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