DE1194046B - Power control device with counter-parallel-connected gas discharge tubes - Google Patents
Power control device with counter-parallel-connected gas discharge tubesInfo
- Publication number
- DE1194046B DE1194046B DEA43370A DEA0043370A DE1194046B DE 1194046 B DE1194046 B DE 1194046B DE A43370 A DEA43370 A DE A43370A DE A0043370 A DEA0043370 A DE A0043370A DE 1194046 B DE1194046 B DE 1194046B
- Authority
- DE
- Germany
- Prior art keywords
- gas discharge
- control
- discharge tubes
- parallel
- counter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3924—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by phase control, e.g. using a triac
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
- G05F1/42—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices discharge tubes only
Description
Stromstelleinrichtung mit gegenparallelgeschalteten Gasentladungsröhren Die Erfindung betrifft einen Stromregler mit gegenparallelgeschalteten Gasentladungsröhren, deren Steuergitter-Wechselspannungen über einen Steuertransformator und einen Phasenschieber phasenveränderlich gesteuert werden.Current control device with gas discharge tubes connected in counter-parallel The invention relates to a current regulator with gas discharge tubes connected in counter-parallel, their control grid alternating voltages via a control transformer and a phase shifter can be controlled in a phase-changeable manner.
Solche Stromregler sind besonders geeignet für den Betrieb von Gasentladungslampen für Beleuchtungszwecke. Solche Lampen werden z. B. angewendet in Kinoräumen, um die Beleuchtung allmählich von hell auf dunkel und umgekehrt zu regeln.Such current regulators are particularly suitable for operating gas discharge lamps for lighting purposes. Such lamps are z. B. applied in cinema rooms to to gradually regulate the lighting from light to dark and vice versa.
Die dabei angewendete Phasensteuerung der Gittersteuerspannung (Horizontalsteuerung) gestattet in der Dunkelstellung eines Reglers praktisch keine vollständige Sperrung des Stromes, weil die dafür erforderliche Phasenverschiebung um genau 180° praktisch nicht erreicht werden kann. Werden z. B. die 180° nicht erreicht, so ist die Sperrung nicht vollständig; werden die 180° überschritten, so zünden die Lampen wieder voll.The applied phase control of the grid control voltage (horizontal control) practically does not permit complete blocking when a controller is in the dark position of the current, because the phase shift of exactly 180 ° required for this is practical cannot be achieved. Are z. B. the 180 ° is not reached, the block is not completely; if the 180 ° is exceeded, the lamps ignite again.
Diese Nachteile werden durch die Erfindung behoben. Der Grundgedanke ist dabei, im Fall des Sperrens den Steuergittern eine negative Steuergleichspannung zu geben, die aus der Gittersteuerspannung durch Gleichrichtung erzeugt wird, worauf dann die Sperrung mit jeder Sicherheit eintritt.These disadvantages are eliminated by the invention. The basic idea is, in the case of blocking the control grid, a negative DC control voltage which is generated from the grid control voltage by rectification, whereupon then the blocking occurs with any certainty.
Die Erfindung besteht nun darin, daß im Steuerkreis jeder Gasentladungsröhre je ein Gleichrichter und je ein diese kurzschließender Kontakt eingeschaltet ist und daß die Kontakte mit dem Phasenschieberwiderstand derart gekuppelt sind, daß in der Endlage bei phasenabhängig herunterreguliertem Strom die Kontakte geöffnet werden und dadurch die Steuergitter der Gasentladungsröhren eine negative Steuergleichspannung erhalten, wodurch eine vollständige Sperrung des Stromdurchganges eintritt.The invention consists in that in the control circuit of each gas discharge tube one rectifier and one short-circuiting contact each is switched on and that the contacts are coupled to the phase shift resistor such that the contacts open in the end position when the current is downregulated depending on the phase and thereby the control grid of the gas discharge tubes have a negative DC control voltage obtained, whereby a complete blocking of the current passage occurs.
Die Erfindung wird an Hand eines Ausführungsbeispiels näher erläutert.- In der Figur sind 1 und 2 die gegenparallelgeschalteten Gasentladungsröhren, welche vom Netz 4 her dem Verbraucher 3, vorzugsweise Fluoreszenzlampen, den von Null bis maximal geregelten Strom liefern.The invention is explained in more detail using an exemplary embodiment. In the figure, 1 and 2 are the counter-parallel connected gas discharge tubes, which from the network 4 to the consumer 3, preferably fluorescent lamps, from zero to Deliver maximum regulated current.
Für die Steuerung der Gasentladungsröhren ist der Phasenschieber 5 vorgesehen. Dieser besteht in bekannter Weise aus dem Transformator 9, den phasendrehenden Gliedern, Kondensator 6 und Stellwiderstand 7 und dem Steuertransformator B. Die Ausgangswicklungen 8 a und 8 b sind an die Steuergitter der Thyratrons 1 und 2 angeschaltet und übertragen die phasenveränderlichen Steuergitterspannungen. Durch Verstellen des Widerstandes 7 wird der Strom durch die Lampen 3 reguliert. Gemäß der Erfindung ist im Steuerkreis jeder Gasentladungsröhre je ein Gleichrichter 10 und 11 eingeschaltet. Parallel dazu sind kurzschließende Kontakte 12 und 13 geschaltet. Diese sind über den Betätigungsmagneten 16 und Kontakt 17 mit dem Stellwiderstand 7 des Phasenschiebers gekuppelt. Die Kupplung erfolgt in der Weise, daß in der Endlage bei phasenabhängig herunterreguliertem Strom die Kontakte 12 und 13 geöffnet und damit die Gleichrichter 10, 11 eingeschaltet sind, welche nun die Steuerwechselspannungen in negative Steuergleichspannungen umformen. Durch diese, Maßnahme erhalten die Steuergitter eine negative Steuergleichspannung. Ihre Glättung erfolgt durch die Parallelkondensatoren 14 und 15. Durch diese negative Steuergleichspannung tritt eine vollständige Sperrung des Stromdurchganges durch den Verbraucher 3 ein. Diese Sperrung ist auch dann mit Sicherheit vorhanden, wenn die Phasensteuerung in den Endlagen nicht mehr sicher arbeitet, was durch die unvermeidlichen Unsymmetrien in der Schaltung bedingt ist.The phase shifter 5 is provided for controlling the gas discharge tubes. This consists in a known manner of the transformer 9, the phase-rotating elements, capacitor 6 and variable resistor 7 and the control transformer B. The output windings 8 a and 8 b are connected to the control grid of the thyratron 1 and 2 and transmit the phase-variable control grid voltages. By adjusting the resistor 7, the current through the lamps 3 is regulated. According to the invention, a rectifier 10 and 11 is switched on in the control circuit of each gas discharge tube. Short-circuiting contacts 12 and 13 are connected in parallel. These are coupled to the variable resistor 7 of the phase shifter via the actuating magnet 16 and contact 17. The coupling takes place in such a way that, in the end position, when the current is downregulated depending on the phase, the contacts 12 and 13 are opened and the rectifiers 10, 11 are switched on, which now convert the AC control voltages into negative DC control voltages. As a result of this measure, the control grids receive a negative DC control voltage. They are smoothed by the parallel capacitors 14 and 15. This negative DC control voltage completely blocks the passage of current through the consumer 3. This blocking is also present with certainty if the phase control no longer works safely in the end positions, which is due to the unavoidable asymmetries in the circuit.
Der Stromregler hat für den Betrieb von Fluoreszenslampen seine besondere Bedeutung, indem gegenparallel arbeitende Gasentladungsröhren für deren Regelung besonders vorteilhaft sind.The current regulator has its special feature for the operation of fluorescent lamps Significance by having gas discharge tubes working counter-parallel for their regulation are particularly advantageous.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA43370A DE1194046B (en) | 1963-06-19 | 1963-06-19 | Power control device with counter-parallel-connected gas discharge tubes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA43370A DE1194046B (en) | 1963-06-19 | 1963-06-19 | Power control device with counter-parallel-connected gas discharge tubes |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1194046B true DE1194046B (en) | 1965-06-03 |
DE1194046C2 DE1194046C2 (en) | 1966-02-03 |
Family
ID=6933603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA43370A Granted DE1194046B (en) | 1963-06-19 | 1963-06-19 | Power control device with counter-parallel-connected gas discharge tubes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1194046B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2440309A (en) * | 1944-01-25 | 1948-04-27 | Ohio Crankshaft Co | Capacitor translating system |
DE741926C (en) * | 1938-06-16 | 1953-02-09 | Siemens Schuckertwerke A G Ber | Spot or spot welding device with controllable gas or vapor discharge sections as a switch for the welding current |
DE894582C (en) * | 1939-06-30 | 1953-10-26 | Siemens Ag | Control circuit for gas discharge lines connected in parallel in opposite directions |
US2985816A (en) * | 1955-02-17 | 1961-05-23 | Westinghouse Electric Corp | Voltage regulator for intermittent current operation |
-
1963
- 1963-06-19 DE DEA43370A patent/DE1194046B/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE741926C (en) * | 1938-06-16 | 1953-02-09 | Siemens Schuckertwerke A G Ber | Spot or spot welding device with controllable gas or vapor discharge sections as a switch for the welding current |
DE894582C (en) * | 1939-06-30 | 1953-10-26 | Siemens Ag | Control circuit for gas discharge lines connected in parallel in opposite directions |
US2440309A (en) * | 1944-01-25 | 1948-04-27 | Ohio Crankshaft Co | Capacitor translating system |
US2985816A (en) * | 1955-02-17 | 1961-05-23 | Westinghouse Electric Corp | Voltage regulator for intermittent current operation |
Also Published As
Publication number | Publication date |
---|---|
DE1194046C2 (en) | 1966-02-03 |
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