Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons > Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps

CPC:

Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons (details of transit-time tubes H01J23/00; particle accelerators H05H) > Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01J 25/36 Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field IPC+CPC Available in IPC and CPC
H01J 25/42 Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and with a magnet system producing an H-field crossing the E-field (with travelling wave moving completely around the electron space H01J25/50) IPC+CPC Available in IPC and CPC
H01J 25/48 Tubes in which two electron streams of different velocities interact with one another, e.g. electron-wave tube IPC+CPC Available in IPC and CPC
H01J 25/49 Tubes using the parametric principle, e.g. for parametric amplification IPC+CPC Available in IPC and CPC