4. Electricity: power supply or regulation systems
  5. For phase shift or control
  6. Using transformer

Young-Chang Cho

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Method for driving of a fluorescent lighting and a ballast...

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate

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Method for switching low-power using AC and system for...

Electricity: power supply or regulation systems – For phase shift or control – Using transformer
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2244101

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