Controlling

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Circuit arrangements or apparatus for operating incandescent light sources > Controlling

CPC:

Circuit arrangements or apparatus for operating incandescent light sources (structurally associated with the incandescent lamps H01K1/62) > Controlling

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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H05B 39/041 +2 CPC CPC only CPC only
H05B 39/06 Switching arrangements, e.g. from series operation to parallel operation IPC+CPC Available in IPC and CPC
H05B 39/08 by shifting phase of trigger voltage applied to gas-filled controlling tubes +2 CPC IPC+CPC Available in IPC and CPC