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
Application number
GB17063/39A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co LtdfiledCriticalBritish Thomson Houston Co Ltd
Publication of GB529893ApublicationCriticalpatent/GB529893A/en
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
H05B31/00—Electric arc lamps
H05B31/0081—Controlling of arc lamps
Landscapes
Generation Of Surge Voltage And Current
(AREA)
Abstract
529,893. Automatic control systems. BRITISH THOMSON-HOUSTON CO., Ltd. June 10, 1939, No. 17063. Convention date, June 11, 1938. [Class 38 (iv)] Arcs.-A continuously running motor 5 feeding an arc lamp carbon has its speed varied by changes in the grid voltage of a high vacuum valve 8 in accordance with changes in length of the arc 1. The motor may be supplied through a valve 9 of high power output which is controlled by a valve 8 with high amplification responsive to arc voltage. The voltage across the arc is included in the grid circuit in series with an adjustable opposed bias voltage from a source 6.
GB17063/39A1938-06-111939-06-10Improvements in and relating to electric arc lamps
ExpiredGB529893A
(en)
Improvements in or relating to an electric circuit arrangement for use in maintaining a constant output direct voltage applied to a load fed from a supply having a variable direct voltage