Classifications

• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
  • H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
  • H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
  • H03B7/04—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being vacuum tube
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
  • H01J19/02—Electron-emitting electrodes; Cathodes
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
  • H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J2893/00—Discharge tubes and lamps
  • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps

Applications Claiming Priority (1)

Publications (1)

Family

ID=21767231

Family Applications (1)

Country Status (3)

Families Citing this family (1)

• 1919
  • 1919-04-12 FR FR525377A patent/FR525377A/fr not_active Expired
  • 1919-07-29 NL NL12606A patent/NL11694C/xx active
• 1920
  • 1920-07-07 GB GB19199/20A patent/GB147150A/en not_active Expired

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