Main electrodes

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps > Main electrodes

CPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Main electrodes

Of 9 combined children, 8 exist in both systems.

1 codes are CPC-only extensions.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01J 1/025 CPC only CPC only
H01J 1/04 Liquid electrodes, e.g. liquid cathode IPC+CPC Available in IPC and CPC
H01J 1/12 Cathodes having mercury or liquid alkali metal deposited on the cathode surface during operation of the tube IPC+CPC Available in IPC and CPC
H01J 1/13 Solid thermionic cathodes +1 CPC IPC+CPC Available in IPC and CPC
H01J 1/30 Cold cathodes, e.g. field-emissive cathode IPC+CPC Available in IPC and CPC
H01J 1/32 Secondary-electron-emitting electrodes (H01J1/35 takes precedence) IPC+CPC Available in IPC and CPC
H01J 1/34 Photo-emissive cathodes (H01J1/35 takes precedence) IPC+CPC Available in IPC and CPC
H01J 1/35 Electrodes exhibiting both secondary emission and photo-emission IPC+CPC Available in IPC and CPC
H01J 1/36 Solid anodes; Solid auxiliary anodes for maintaining a discharge IPC+CPC Available in IPC and CPC