DE476923C - Circuit for regulating the grid bias in three or more electrode tubes by means of a potentiometer circuit - Google Patents
Circuit for regulating the grid bias in three or more electrode tubes by means of a potentiometer circuitInfo
- Publication number
- DE476923C DE476923C DEH92316D DEH0092316D DE476923C DE 476923 C DE476923 C DE 476923C DE H92316 D DEH92316 D DE H92316D DE H0092316 D DEH0092316 D DE H0092316D DE 476923 C DE476923 C DE 476923C
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- potentiometer
- regulating
- grid bias
- electrode tubes
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1623—Supply circuits using tubes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
Schaltung zur Regelung der Gittervorspannung bei Drei- oder 1Vlehrelektrodenröhren mittels Potentiometerschaltung Man hat schon vorgeschlagen, die Gittervorspannungen für Mehrelektrodenröhren von einem Potentiometer abzunehmen, dessen eine Hälfte durch eine Photozelle gebildet ist. Gemäß der Erfindung wird nun auch als zweiter Widerstand des Spannungsteilers eine Photozelle verwendet. Diese bietet den Vorteil, daß ohne große Schwierigkeiten einfach durch Änderung der Belichtung der beiden Zellen große Änderungen der Vorspannung bewirkt werden können. Ganz abgesehen davon ist es auch verhältnismäßig schwierig, große feste Widerstände, wie sie bei derartigen Poteniiometerschaltungen nötig sind, mit genügender Konstanz einfach herzustellen. Die Abbildung zeigt ein Ausführungsbeispiel der Erfindung.Circuit for regulating the grid bias voltage for three or one wire electrode tubes by means of a potentiometer circuit. It has already been proposed that the grid biases for multi-electrode tubes to remove from a potentiometer, one half of which is formed by a photocell. According to the invention is now also as a second Resistance of the voltage divider uses a photocell. This offers the advantage that without much difficulty simply by changing the exposure of the two Cells can cause large changes in bias. Quite apart from that it is also relatively difficult to find large fixed resistances, as is the case with such Potentiometer circuits are necessary, easy to manufacture with sufficient constancy. The figure shows an embodiment of the invention.
Bei der Schaltung nach der Abbildung sind die beiden Widerstände der Spannungsteilerschaltung durch je eine lichtempfindliche Zelle 3 und 12 gegeben. Die Spannung für die Röhre sowie für die Spannungsteilerschaltung -wird hier von einem Potentiometer 13 abgenommen, an das die einzelnen. Anschlußleitungen zu der Zelle 3 zum Glühfaden, zur Zelle 12 und zur Anode 6 veränderlich angeschlossen sind. Durch Einstellung dieser Anschlußleitungen am Potentiometer können die einzelnen Spannungsgrößen in geeigneter Weise eingestellt werden. Die Zelle 3 wird auch hier zwecks Einstellung der Gittervorspannung mit veränderlicher Lichtstärke beeinflußt. Statt die Zelle 3 zu beeinflussen, kann auch die Zelle 12 veränderlich belichtet werden, oder es können auch beide Zellen 3 und 12 gleichzeitig veränderlich belichtet werden. Die neue Schaltung kann auch dazu verwandt werden, um relaisartige Wirkungen auszulösen, indem z. B. im Anodenstromkreis irgendein geeignetes Relais eingeschaltet wird, das durch die auf die lichtelektrischen Zellen wirkenden Beeinflussungen gesteuert wird.In the circuit according to the figure, the two resistors of the voltage divider circuit are given by one light-sensitive cell 3 and 12 each. The voltage for the tube as well as for the voltage divider circuit -is taken from a potentiometer 13 to which the individual. Connection lines to the cell 3 to the filament, to the cell 12 and to the anode 6 are variably connected. By setting these connecting lines on the potentiometer, the individual voltage values can be set in a suitable manner. The cell 3 is also influenced here for the purpose of setting the grid bias with variable light intensity. Instead of influencing cell 3, cell 12 can also be exposed in a variable manner, or both cells 3 and 12 can also be exposed in variable fashion at the same time. The new circuit can also be used to trigger relay-like effects by e.g. B. any suitable relay is switched on in the anode circuit, which is controlled by the influences acting on the photoelectric cells.
Bei derartigen Schaltungen ist es zweckmäßig, die Spannungen für die Photozellen, die verhältnismäßig groß sind, .gleichzeitig auch dem Poteniiometer, das die Spannungen für die Röhre liefert, zu entnehmen, wie das die Abbildung zeigt.In such circuits, it is useful to determine the voltages for the Photocells that are relatively large, at the same time also the potentiometer, that supplies the voltages for the tube, as shown in the figure.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH92316D DE476923C (en) | Circuit for regulating the grid bias in three or more electrode tubes by means of a potentiometer circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH92316D DE476923C (en) | Circuit for regulating the grid bias in three or more electrode tubes by means of a potentiometer circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE476923C true DE476923C (en) | 1929-05-30 |
Family
ID=7166418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH92316D Expired DE476923C (en) | Circuit for regulating the grid bias in three or more electrode tubes by means of a potentiometer circuit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE476923C (en) |
-
0
- DE DEH92316D patent/DE476923C/en not_active Expired
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