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
GB8414/46A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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.)
H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
H03F1/52—Circuit arrangements for protecting such amplifiers
H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
Landscapes
Engineering & Computer Science
(AREA)
Power Engineering
(AREA)
Electron Sources, Ion Sources
(AREA)
Sanitary Device For Flush Toilet
(AREA)
Abstract
609,858. Valve amplifying circuits. PHILIPS LAMPS, Ltd. March 19, 1946, No. 8414. Convention date, Aug. 5, 1941. Drawings to Specification. [Class 40 (vi)] The small negative bias required for the operation of a valve designed to have high mutual conductance but a low working anode current is obtained by means of a high grid resistance which is returned to a source of positive potential. This manner of obtaining bias is shown to stabilise operation against variations in valve characteristics.
GB8414/46A1941-08-051946-03-19Improvements in or relating to electronic amplifying systems
ExpiredGB609858A
(en)
Improvements in or relating to amplifier circuits having variable amplification and comprising at least one tube containing an auxiliary cathode emitting secondary electrons