DE767199C - Circuit for generating short pulses - Google Patents
Circuit for generating short pulsesInfo
- Publication number
- DE767199C DE767199C DET45121D DET0045121D DE767199C DE 767199 C DE767199 C DE 767199C DE T45121 D DET45121 D DE T45121D DE T0045121 D DET0045121 D DE T0045121D DE 767199 C DE767199 C DE 767199C
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- patent specification
- rectifier
- pulses
- choke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/53—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback
- H03K3/543—Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a vacuum tube
Description
Die Erfindung betriftt die Verkürzung der Dauer von Impulsen, z. B. in einer periodischen Impulsfolge. Derartige Folgen von kurzzeitigen Innpulsen finden auf verschiedenen Gebieten der Technik, z. B. beim Fernsehen, Verwendung.The invention concerns shortening the duration of pulses, e.g. B. in a periodic pulse train. Find such consequences from short-term pulse pulses in various fields of technology, e.g. B. in television, use.
Die Erfindung ist in den Abbildungen erläutert. Zur Erzeugung einer periodischen Impulsfolge dient die Röhre R in Abb. I, die mit einer Wechselspannung Lt von etwa sinusförmigem Verlauf und gewünschter Periode gesteuert wird. Das Gitter ist durch eine Hilfsbatterie Fg oder hei Einschalten eines RC-Gliedes in die Gitterleitung durch einen Audioneffekt stark negativ vorgespannt und liefert daher in Anodenkreis Stromstöße. Die dem negativen Gitter aufgedrückte Wechselspannung ist in Abb. 2 unten dargestellt. Wie man aus der gleichen Abbildung entnimmt, wird diese Wechselspannung dem bis zu einer Spannung P unterhalb des unteren Knickes L' der Anodenstromkenulinie negativ vorgespannten Gitter der Röhre R zugeführt. Hierdurch entstehen im Anodenkreis Stromstöße e Mäß Abb. 3.The invention is illustrated in the figures. To generate a periodic pulse train is used by the tube R in Fig. I, which is connected to an alternating voltage Lt is controlled by an approximately sinusoidal curve and desired period. The grid is by an auxiliary battery Fg or when switching on an RC element in the grid line strongly negatively biased by an audio effect and therefore delivers in the anode circuit Power surges. The alternating voltage impressed on the negative grid is shown in Fig. 2 shown below. As can be seen from the same figure, this becomes alternating voltage that up to a voltage P below the lower bend L 'of the anode current bar line negatively biased grid of the tube R supplied. This creates in the anode circuit Current surges e As shown in Fig. 3.
Im Anodenkreis liegt eine Drossel D, deren Einschwingzeit kurz gegenüber der Periode der Steuerspannung der Röhre R ist. Die Drossel D wird hei jedem Stromstoß irgendeiner Polarität angestoßen und schwingt in ihrer Eigenschwingung aus. Notwendige Voraussetzung hierfür ist, daß der innere Widerstand der Röhre R so groß ist, daß die Drossel noch nicht aperiodisch gedämpft ist. Die Art des Ausschwingens der Drossel beim Anstoß mit Impulsen gemäß Abb.3 veranschaulicht Abb. d Während der plötzlichen Zunahme des Anodenstromes von d nach B entsteht an der Drossel ein Spannungsimpuls AB gemäß Abb.4, der allmählich abklingt. Während der darauffolgenden Abnahme des Anodenstromes von B nach C entsteht ein entgegengesetzt gerichteter. allmählich abklingender Spannungsstoß BC. Dieses Spiel wiederholt sich lief jedem der Stromimpulse gemäß Ablb. 3. Wird nun ferner parallel zu der Drossel D ein Gleichrichter G geschaltet, so ist dieser je nach Richtung seiner Durchlässigkeit imstande. entweder das Entstehen der Impulse AB oder der Impulse BC zu verhindern. Werden z. B. die Impulse dB durch den Gleichrichter albgeschnitten, so kann die Drossel nur noch durch die Impulse BC angestoßen werden. Man erhält daher eine Impulsfolge. wie sie in Abb. dargestellt ist. Hat der Gleichrichter tG entgegengesetzte Durchlaßrichtung, wie Abb. I a veranschaulicht, so erhält man eine Impulsfolge gleicher Frequenz, aber entgegengesetzter Polarität (Abb.6). Die Abnahme der Impulse erfolgt an den Enden der Drossel D.In the anode circuit there is a choke D, whose settling time is just opposite is the period of the control voltage of the tube R. The choke D is activated with every current surge triggered any polarity and oscillates in its natural oscillation. Necessary The prerequisite for this is that the internal resistance of the tube R is so great that the throttle has not yet been damped aperiodically. The way the throttle swings out when bumped with impulses according to Fig. 3, Fig. d illustrates during the sudden If the anode current increases from d to B, a voltage pulse is generated at the choke AB as shown in Figure 4, which gradually subsides. During the subsequent acceptance of the Anode current from B to C results in an opposite direction. gradually decaying voltage surge BC. This game repeats itself ran each of the current impulses according to fig. 3. If a rectifier G is also connected in parallel to the choke D, so this is capable of its permeability depending on the direction. either arising of Impulse AB or Impulse BC. Are z. B. the pulses dB through cut the rectifier, so the throttle can only use the pulses BC can be triggered. A pulse train is therefore obtained. as shown in fig is. If the rectifier tG has the opposite forward direction, as illustrated in Fig. I a, this gives a pulse train of the same frequency but opposite polarity (Fig.6). The pulses are picked up at the ends of the throttle D.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET45121D DE767199C (en) | 1935-03-27 | 1935-03-27 | Circuit for generating short pulses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET45121D DE767199C (en) | 1935-03-27 | 1935-03-27 | Circuit for generating short pulses |
Publications (1)
Publication Number | Publication Date |
---|---|
DE767199C true DE767199C (en) | 1952-03-31 |
Family
ID=7561950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET45121D Expired DE767199C (en) | 1935-03-27 | 1935-03-27 | Circuit for generating short pulses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE767199C (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE539187C (en) * | 1928-05-26 | 1931-11-23 | Electrical Res Prod Inc | Power surge transmission system, e.g. for telegraphy |
FR724144A (en) * | 1930-09-29 | 1932-04-22 | Thomson Houston Comp Francaise | Improvements to progressively adjustable electric discharge rectifiers and converters |
FR738475A (en) * | 1931-06-17 | 1932-12-26 | Rca Corp | Improvements to television sets |
DE574542C (en) * | 1929-06-30 | 1933-04-18 | Siemens & Halske Akt Ges | Device for remote measurement with the help of current impulses, the frequency of which corresponds to the size to be measured and which act on a measuring device via a transformer |
FR752532A (en) * | 1932-03-17 | 1933-09-25 | Loewe Opta Gmbh | Tube assembly for the production of controlled tilting oscillations |
GB400976A (en) * | 1932-04-04 | 1933-11-06 | Emi Ltd | Improvements relating to oscillatory electric circuits, such as may be used, for example, in connection with cathode ray devices |
FR755702A (en) * | 1932-05-27 | 1933-11-29 | Thomson Houston Comp Francaise | Improvements to discharge valve control systems |
CH169483A (en) * | 1932-03-17 | 1934-05-31 | Loewe Opta Gmbh | Method and device for generating controlled tilting vibrations. |
FR43509E (en) * | 1933-05-23 | 1934-06-23 | Thomson Houston Comp Francaise | Improvements to progressively adjustable electric discharge rectifiers and converters |
-
1935
- 1935-03-27 DE DET45121D patent/DE767199C/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE539187C (en) * | 1928-05-26 | 1931-11-23 | Electrical Res Prod Inc | Power surge transmission system, e.g. for telegraphy |
DE574542C (en) * | 1929-06-30 | 1933-04-18 | Siemens & Halske Akt Ges | Device for remote measurement with the help of current impulses, the frequency of which corresponds to the size to be measured and which act on a measuring device via a transformer |
FR724144A (en) * | 1930-09-29 | 1932-04-22 | Thomson Houston Comp Francaise | Improvements to progressively adjustable electric discharge rectifiers and converters |
FR738475A (en) * | 1931-06-17 | 1932-12-26 | Rca Corp | Improvements to television sets |
FR752532A (en) * | 1932-03-17 | 1933-09-25 | Loewe Opta Gmbh | Tube assembly for the production of controlled tilting oscillations |
CH169483A (en) * | 1932-03-17 | 1934-05-31 | Loewe Opta Gmbh | Method and device for generating controlled tilting vibrations. |
GB400976A (en) * | 1932-04-04 | 1933-11-06 | Emi Ltd | Improvements relating to oscillatory electric circuits, such as may be used, for example, in connection with cathode ray devices |
FR755702A (en) * | 1932-05-27 | 1933-11-29 | Thomson Houston Comp Francaise | Improvements to discharge valve control systems |
FR43509E (en) * | 1933-05-23 | 1934-06-23 | Thomson Houston Comp Francaise | Improvements to progressively adjustable electric discharge rectifiers and converters |
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