Ultra-capacitor based dynamically regulated charge pump...

Ultra-wide input range switching power supply for circuit...

Ultrasonic frequency power supply

Undershoot eliminator circuit and method for synchronous...

Unidirectional three phase pulse controlled rectifier system...

Unified constant-frequency integration control of...

Unified constant-frequency integration control of...

Unified power architecture

Unified power architecture with dynamic reset

Uninterruptable capability for an active power line conditioner

Uninterruptable off-line, isolated flyback topology switch-mode

Uninterruptable power supply

Uninterrupted power supply and the method for driving its...

Uninterrupted power supply having no low frequency power magneti

Uninterrupted power supply system

Uninterrupted power supply system having improved power factor c

Uninterrupted power supply without power loss

Uninterruptible DC power system

Uninterruptible duplexed power supply system

Uninterruptible duplexed power supply system, and unit...