Regulation of the charging current or voltage by variation of field

Child Classifications

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• H02J 7/163 CPC only CPC only
• H02J 7/18 due to variation of ohmic resistance in field circuit, using resistance switching in or out of circuit step by step IPC+CPC Available in IPC and CPC
• H02J 7/20 due to variation of continuously variable ohmic resistor IPC+CPC Available in IPC and CPC
• H02J 7/22 due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator +1 CPC IPC+CPC Available in IPC and CPC
• H02J 7/24 using discharge tubes or semiconductor devices +3 CPC IPC+CPC Available in IPC and CPC
• H02J 7/26 using magnetic devices with controllable degree of saturation IPC+CPC Available in IPC and CPC
• H02J 7/28 using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device IPC+CPC Available in IPC and CPC
• H02J 7/30 using armature-reaction-excited machines IPC+CPC Available in IPC and CPC