Unrestricted frequency converter for unbalanced loads

Up-and-down chopper circuit

UPS apparatus with control protocols

UPS chassis design having an internal support structure

UPS with current waveshape circuit

Use of an inductor within a full bridge d.c.-d.c. power converte

Using output drop detection pulses to achieve fast transient...

Using output drop detection pulses to achieve fast transient...

Utility current feedback filter with pulse-width modulated power

Utilizing charge stored in a snubber capacitator in a...

Valley-fill power factor correction circuit

Varactor controlled fixed frequency VHF DC-DC converter

Varactor frequency multiplier and switching circuit

Variable bandwith control for power factor correction

Variable charge pumping DC-to-DC converter

Variable frequency controlled zero-voltage switching single-ende

Variable frequency controller

Variable frequency resonant converter

Variable frequency soft switching power supply with reduced nois

Variable frequency, variable voltage power supply