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https://drivepatents.com/patents/1071424 · 28 Dec 2005
The invention provides a power converter system for a railway vehicle that is adapted both for a track circuit using the commercial power supply and a track circuit using a high-frequency alternating-current power supply without increasing the number of fi...
https://drivepatents.com/patents/1082187 · 24 Nov 2004
The device has at least one static frequency changer drive system (4) with first and second sub-devices (2,3) connected by a d.c. circuit (5) and the first sub-device connected to an a.c. source (1) via a transformer (8) and a supply network configuration ...
https://drivepatents.com/patents/1095756 · 28 May 2003
The device has a transformer housing, a transformer core (34) and at least one winding pair containing a primary winding (31) and a first secondary winding (321) for transformation of a first alternating voltage applied to the primary winding. The first se...
https://drivepatents.com/patents/1097855 · 5 Mar 2003
The multiple voltage electrical supply for a railway vehicle has preferably single phase forced switching rectifier bridge (A1,2). A reactive input filter (A3) has a capacity and a choke. A braking pulser also operates as a clipper (B). There is a multi-le...