4. Electricity: motive power systems
  5. Induction motor systems
  6. Primary circuit control

Roy D. Hoffer

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AC motor drive system

Electricity: motive power systems – Reciprocating or oscillating motor – Plural – diverse or diversely controlled motor windings
Patent

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AC motor drive system

Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent

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Electronically dimmed power limited lighting system

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation
Patent

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Slow acting photo lamp control

Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy controlled regulation of the current supply...
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Profile ID: LFUS-PAI-P-271997

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