The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1987
Filed:
May. 08, 1985
Bogdan Brakus, Puchheim, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
A circuit for controlled power supply devices, particularly for autoconverters, for suppressing the oscillatory tendency in such device has an input filter forming a parallel oscillator circuit, which can be excited to oscillations on the basis of a partially negative input impedance of the autoconverter. A series oscillator circuit is connected to the parallel oscillating circuit and is tuned to the resonant frequency thereof, such that an impedance minimum occurs at the resonant frequency, whereas the parallel resonant maximums of the impedance, which appear at a lower and at a higher frequency, can be damped by a comparatively small ohmic resistance, such that unwanted oscillations are prevented. The circuit represents a low capacitive load to the feed network, and exhibits low dissipated power through the ohmic resistor, making the circuit particularly adapted for high output power packs which are operated by a three-phase network.