Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (details of transit-time tubes H01J23/00; particle accelerators H05H)

Child Classifications

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• H01J 25/005
• H01J 25/02 Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
• H01J 25/34 Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
• H01J 25/50 Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field (with travelling wave not moving completely around the electron space H01J25/42; functioning with plural reflection or with reversed cyclotron action H01J25/62, H01J25/64)
• H01J 25/61 Hybrid tubes, i.e. tubes comprising a klystron section and a travelling-wave section
• H01J 25/62 Strophotrons, i.e. tubes with H-field crossing the E-field and functioning with plural reflection
• H01J 25/64 Turbine tubes, i.e. tubes with H-field crossing the E-field and functioning with reversed cyclotron action
• H01J 25/66 Tubes with electron stream crossing itself and thereby interacting or interfering with itself
• H01J 25/68 Tubes specially designed to act as oscillator with positive grid and retarding field, e.g. for Barkhausen-Kurz oscillators (with secondary emission H01J25/76)
• H01J 25/74 Tubes specially designed to act as transit-time diode oscillators, e.g. monotrons
• H01J 25/76 Dynamic electron-multiplier tubes, e.g. Farnsworth multiplier tube, multipactor
• H01J 25/78 Tubes with electron stream modulated by deflection in a resonator