Switching power supply unit having sub-switching element and...

Switching power supply unit utilizing a voltage dropping circuit

Switching power supply unit with series connected converter...

Switching power supply unit, and electronic apparatus...

Switching power supply using a saturable reactor to control a sw

Switching power supply using a single isolating element to facil

Switching power supply using a transformer, rectifier,...

Switching power supply using an inductor device to prevent...

Switching power supply using printed coil type transformer

Switching power supply utilizing magnetically coupled series...

Switching power supply utilizing oscillator frequency tuner...

Switching power supply utilizing switch-selectable resistors...

Switching power supply with auxiliary power supply device for in

Switching power supply with clamping circuit

Switching power supply with delay circuit for light-load period

Switching power supply with increased efficiency at light load

Switching power supply with input voltage reduction detection

Switching power supply with nonlinear characteristics at...

Switching power supply with novel common mode filter...

Switching power supply with power factor control