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:
Jul. 25, 2000
Filed:
Jun. 05, 1998
Andreas Rampold, Mittweida, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electrical power supply (EPS) including a voltage regulator (SR1) and an inrush current limiter (ICL1) having a current limiting circuit (CL1) and a support capacitor (C1). Charging current spikes produced in particular when the electrical power supply (EPS) is switched on are limited by the current limiting circuit (CL1). The current limiting circuit (CL1) is connected in series with the support capacitor (C1), thus preventing load current from flowing through the current limiting circuit. A step-up converter circuit (SUC) is connected upstream of the current limiting circuit (CL1) with the particular purpose of increasing the voltage (V). An advantage of the arrangement is that, due to the step-up converter circuit (SUC), the support capacitor (C1) has considerably improved support characteristics with regard to the switching regulator (SR1). Furthermore, the boosted voltage (V) at the terminals (T1 and T3) of the inrush current limiter (ICL1) considerably reduces the disruptive effects of interference voltages caused by the switching regulator (SR1). Additional interference suppression, e.g., by means of a costly radiointerference suppression network, is thereby advantageously rendered unnecessary.