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
GB11081/33A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SAfiledCriticalBrown Boveri und Cie AG Germany
Publication of GB417676ApublicationCriticalpatent/GB417676A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/02—Details
H01J17/04—Electrodes; Screens
Landscapes
Control Of The Air-Fuel Ratio Of Carburetors
(AREA)
Abstract
417,676. Discharge apparatus. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. April 13, 1933, No. 11081. Convention date, April 14, 1932. [Class 39 (i).] Failure of the blocking action of the grid at the instant of switching on the anode voltage on a mercury vapour valve 1 is prevented by providing the switch 9, for applying the anode voltage, with a preliminary contact which connects the source of supply 5 to the anode through a resistance 10. The valve 1 is shown operating as a switch controlling supply to a load 6, a parallel valve 15 being also shown. Additional means may be provided, such as a condenser 12 connected between the grid and cathode of the valve 1, a resistance 14 shunting the source of supply 5, an inductance 11, which may be shunted by a resistance 13, in series with the supply, for preventing transient or excess voltages from depriving the grid of its blocking action.
GB11081/33A1932-04-141933-04-13Improvements in and relating to mercury vapour rectifiers
ExpiredGB417676A
(en)