AT150910B - Circuit arrangement for generating sawtooth-like curve shapes. - Google Patents
Circuit arrangement for generating sawtooth-like curve shapes.Info
- Publication number
- AT150910B AT150910B AT150910DA AT150910B AT 150910 B AT150910 B AT 150910B AT 150910D A AT150910D A AT 150910DA AT 150910 B AT150910 B AT 150910B
- Authority
- AT
- Austria
- Prior art keywords
- circuit arrangement
- curve shapes
- voltage
- generating sawtooth
- capacitor
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 description 7
Landscapes
- Dc-Dc Converters (AREA)
Description
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Schaltungsanordnung zur Erzeugung sägezahnartiger Kurvenformen.
Es ist eine Schaltungsanordnung zur Erzeugung von sägezahnförmigen Spannungskurven bekannt, bei welcher ein Kondensator über einen Widerstand aus einer Spannungsquelle aufgeladen, und innerhalb derjenigen Zeit, in welcher die Spannung am Kondensator zeitproportional verläuft, über eine zum Kondensator parallel liegende Röhre ein Entladevorgang eingeleitet wird. Diese bekannte Anordnung ist an Hand der Fig. 1 a der Zeichnung dargestellt. Der Kondensator 10 wird über den Widerstand 11 aus einer nur durch ein Pluszeichen angedeuteten Gleichspannungsquelle, deren negativer Pol geerdet ist, geladen. Die Spannung am Kondensator 10 steigt unter der Voraussetzung, dass die Röhre 12 gesperrt sein möge, zunächst linear an, und der Kondensator entlädt sich, wenn am Gitter der Röhre 12 ein positiver Spannungsimpuls auftritt.
Diese bekannte Anordnung hat den Nachteil, dass eine Spannungsquelle nötig ist, die eine grössere Spannung besitzen muss als die Amplitude der gewünschten Sägezahnspannung. Gemäss der Erfindung wird eine Schaltungsanordnung vorgeschlagen mit der Spannungssägezähne auch mittels einer Hilfsspannungsquelle von sehr viel geringerer Spannung als in dem oben erwähnten Falle hergestellt werden können. Die neue Schaltungsanordnung besteht darin, dass ein Speicher magnetischer Energie in Reihe mit einer Schaltvorriehtung liegt, und dass dieser Speicher zusammen mit einem Gleichrichter und einem dazu in Reihe liegenden Kondensator, dem seinerseits ein Entladungszweig parallel liegt, einen geschlossenen Stromkreis bildet.
Eine Reihe von Ausführungsformen der Erfindung zusammen mit weiteren Verbesserungen,
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Circuit arrangement for generating sawtooth-like curve shapes.
A circuit arrangement for generating sawtooth-shaped voltage curves is known, in which a capacitor is charged via a resistor from a voltage source and, within the time in which the voltage across the capacitor is proportional to time, a discharge process is initiated via a tube parallel to the capacitor. This known arrangement is shown with reference to FIG. 1 a of the drawing. The capacitor 10 is charged via the resistor 11 from a direct voltage source, indicated only by a plus sign, the negative pole of which is grounded. Assuming that the tube 12 may be blocked, the voltage across the capacitor 10 initially rises linearly, and the capacitor discharges when a positive voltage pulse occurs on the grid of the tube 12.
This known arrangement has the disadvantage that a voltage source is required which must have a higher voltage than the amplitude of the desired sawtooth voltage. According to the invention, a circuit arrangement is proposed with which voltage saw teeth can also be produced by means of an auxiliary voltage source with a very much lower voltage than in the above-mentioned case. The new circuit arrangement consists in that a store of magnetic energy lies in series with a switching device, and that this store forms a closed circuit together with a rectifier and a capacitor in series, which in turn has a discharge branch in parallel.
A number of embodiments of the invention along with further improvements,
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Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE150910X | 1935-09-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT150910B true AT150910B (en) | 1937-10-11 |
Family
ID=5674181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT150910D AT150910B (en) | 1935-09-25 | 1936-08-26 | Circuit arrangement for generating sawtooth-like curve shapes. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT150910B (en) |
-
1936
- 1936-08-26 AT AT150910D patent/AT150910B/en active
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