Stabilisierte Stromversorgungsvorrichtung

Details

Veröffentlichungs-Nr.

EP4718200

Anmeldetag

4. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

(TOCHITANI KOJI et al.)

Abstract

Disclosed is a stabilized power supply apparatus including: a switching power supply apparatus (20); and a current stabilizing circuit (10) connected at a stage before or after the switching power supply apparatus. The stabilized power supply apparatus converts a DC input voltage supplied from a DC power supply and outputs a stable DC voltage, and the current stabilizing circuit includes: a current control transistor (M1) connected in series between an input terminal and an output terminal; a low-pass filter (LPF) connected to the output terminal; an operational amplifier circuit (AMP) that controls the current control transistor according to a potential difference between a feedback voltage of an output returned through the low-pass filter and a predetermined voltage; and an amplitude limiting circuit (D1, D2) that limits an amplitude range of the feedback voltage.

Anmelder

Firma

Mitsumi Electric Co., Ltd.

Land

🇯🇵 Japan