GB148992A - Improvements in electromagnetic wave receiving arrangements - Google Patents

Improvements in electromagnetic wave receiving arrangements

Info

Publication number
GB148992A
GB148992A GB20883/20A GB2088320A GB148992A GB 148992 A GB148992 A GB 148992A GB 20883/20 A GB20883/20 A GB 20883/20A GB 2088320 A GB2088320 A GB 2088320A GB 148992 A GB148992 A GB 148992A
Authority
GB
United Kingdom
Prior art keywords
current
relay
direct
electromagnetic wave
wave receiving
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.)
Expired
Application number
GB20883/20A
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.)
DRATHLOSE TELEGRAPHIE GmbH
Original Assignee
DRATHLOSE TELEGRAPHIE GmbH
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 DRATHLOSE TELEGRAPHIE GmbH filed Critical DRATHLOSE TELEGRAPHIE GmbH
Publication of GB148992A publication Critical patent/GB148992A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

148,992. Ges. f³r Drahtlose Telegraphie. Feb. 8, 1916, [Convention date]. Thermionic detectors and relays. - A direct-current relay is operated by wireless signals by a thermionic valve having a large filament and high anode voltage, the grid potential of which is such that normally no current flows through the plate circuit. Rectified impulses are amplified by the valves 4, 5 in cascade, and led to the strong current valve 9, having a large cathode 10. The grid potential is adjusted so that no appreciable current flows in the plate circuit, in which is located an ordinary direct-current relay 12. On the arrival of a signal impulse, a direct current is released to operate the relay. A condenser 15 is preferably connected in parallel with the relay.
GB20883/20A 1916-02-08 1920-07-12 Improvements in electromagnetic wave receiving arrangements Expired GB148992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE520284X 1916-02-08

Publications (1)

Publication Number Publication Date
GB148992A true GB148992A (en) 1922-01-12

Family

ID=6550946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20883/20A Expired GB148992A (en) 1916-02-08 1920-07-12 Improvements in electromagnetic wave receiving arrangements

Country Status (2)

Country Link
FR (1) FR520284A (en)
GB (1) GB148992A (en)

Also Published As

Publication number Publication date
FR520284A (en) 1921-06-23

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