Apparatus for the Protection of Transmitting Valves

  • Inventors:
  • Assignees: Licentia Gmbh
  • Publication Date: June 17, 1970
  • Publication Number: GB-1195247-A


1,195,247. Protective arrangements. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 13 Sept., 1967 [13 Sept., 1966], No. 41725/67. Heading H3W. [Also in Division H2] A transmitter valve 8 is protected under excess current conditions, e.g. due to a flashover, by an ignitron 5 and a resistor 4 connected across the smoothing capacitor 3 of a rectified A.C. supply, the ignitron 5 being triggered by a thyristor 61 which is rendered conductive when the current sensed by a transductor 9 exceeds a value determined by a threshold device 10, e.g. a Zener diode. An amplifier 11 may be provided. A second ignitron may be connected with reversed polarity across the ignitron 5 and a further ignitron with a series resistor may be connected directly across the valve, Fig. 2 (not shown).




Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)


Cited By (2)

    Publication numberPublication dateAssigneeTitle
    EP-0001722-A2May 02, 1979European Atomic Energy Community (Euratom)Fast high voltage on-off switch with possibility of voltage regulation, load- and self- protection
    EP-0001722-A3May 16, 1979European Atomic Energy Community (Euratom)Schneller Hochspannungs-Ein-Aus-Schalter mit Möglichkeit zur Spannungsregelung sowie zum Last- und Selbstschutz