Higher-efficiency cold-cathode fluorescent lamp power supply

Highly efficient conversion circuit for power supplies

Highly efficient isolated AC/DC power conversion technique

Highly efficient isolated AC/DC power conversion technique

Highly efficient rectifying and converting circuit for computer

Highly efficient step-down/step-up and step-up/step-down...

Highly efficient switching power converter using a charge...

Highly efficient, tightly regulated DC-to-DC converter

Highly fault tolerant active power line conditioner

Holdover circuit for AC-to-DC converters

Horizontal deflection apparatus

Host electronic equipment with internal power supply adapted for

HVDC DC to DC converter with commutating transformer

HVDC device for converting between alternating voltages and...

HVDC Floating current order system

HVDC power transmission system with cooling and switching...

HVDC transmission

HVDC transmission system with bidirectionally controlled thyrist

HVDC transmission system with multiple converter stations

HVDC transmission with a converter connected between an AC volta