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
GB12592/37A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbHfiledCriticalTelefunken AG
Publication of GB475397ApublicationCriticalpatent/GB475397A/en
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
Landscapes
Microwave Tubes
(AREA)
Abstract
475,397. Inductance coils. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 3, 1937, No. 12592. Convention date, May 2, 1936. [Class 38 (ii)] [Also in Group XL] An inductance coil comprises a helix L of ceramic material coated with metal and housed within a tube 3. The coil is rotatable about its axis and co-operates with a sliding contact fixed to the tube so as to put more or less of the helix in circuit.
GB12592/37A1936-05-021937-05-03Improvements in or relating to radio and like transmitters
ExpiredGB475397A
(en)