Tdk Corporation

Shigetaka Maeyama

Nobuyuki Matsui

Koichiro Miura

Takaharu Takeshita

Kenichi Aonuma

Hisahiko Abe

Hiromitsu Hirayama, Deceased

Hiroko Hirayama, Heiress

Hiroshi Hirayama, Heiress

A switching power source having a digital control system is provided. The switching power source includes a switching circuit,for switching an input power, an output circuit,for converting the switching output into a DC output, and a digital control,The digital control,is adapted to receive an output voltage analog signal AS,and an output current analog signal AS,and to convert the signals AS,and AS,into digital signals. It further functions to calculate, based on the digital signals, a command value for determining at least one of the switching frequency and the on or off time of the main switch,The operation of the main switch,is controlled in accordance with the command value. Information on power source input voltage or load terminal voltage is obtained through an assumption based on the signals AS,and AS

Switching power source with a digital control circuit to maintain a constant DC output signal

Switching power source with a digital control circuit to maintain a

Electric power device with improved power factor

Growing community of inventors

Sakura, Japan

Shigetaka Maeyama