Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • 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
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • 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
  • H03F1/544—Protection of filaments

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Emergency Alarm Devices (AREA)
• Indication Of The Valve Opening Or Closing Status (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10190737

Family Applications (1)

Country Status (4)

• 0
  • BE BE437120D patent/BE437120A/xx unknown
  • NL NL55182D patent/NL55182C/xx active
• 1938
  • 1938-11-22 GB GB33952/38A patent/GB521714A/en not_active Expired
• 1939
  • 1939-12-01 CH CH231368D patent/CH231368A/fr unknown

Also Published As

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