OVERCURRENT CONTROL DEVICE
申请公布号:JP2009296885(A)
申请号:JP20090218453
申请日期:2009.09.24
申请公布日期:2009.12.17
发明人:SHOJI MASATAKA;KOMATSU AKIYUKI
分类号:H02M3/28
主分类号:H02M3/28
摘要:<P>PROBLEM TO BE SOLVED: To provide an overcurrent control device never damaging switching element by one current protective device even for a load to which a momentary current several times larger than average current flows. Ž<P>SOLUTION: In the overcurrent control device of a switching power source device which changes switching frequency, an overcurrent detecting means is arranged between a secondary winding L2 of a transformer and a smoothing capacitor C1 on the secondary side of the transformer T1, the return time from the time when overcurrent is detected in an overcurrent detecting element R1 to constant-voltage operation of stationary state, is made to be at least one cycle time or longer of the switching frequency. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
CHEMICAL RECOVERY IN CAUSTIC SODA PRODUCTION
CENTRIFUGAL COUNTERCURRENT EXTRACTION METHOD AND APPARATUS
METHOD OF AND APPARATUS FOR DISPENSING A MIXTURE OF LIQUIDS FROM A PRESSURIZED THREE PHASE SYSTEM
Tuerverschluss, insbesondere fuer Kraftfahrzeugtueren
Roehrendampferzeuger mit einer querliegenden Dampfabscheidetrommel
Axiale Fuehrung fuer Gleitlager
Schmieroel-Kuehlwasser-Waermetauscher fuer Brennkraftmaschinen
Umspuleinrichtung fuer Tonbandgeraete, insbesondere Magnettonbandgeraete
Verfahren zur Herstellung von Piperazin-derivaten
Aufsteckgestell fuer Paletten mit rechtwinkliger Ladeflaeche
Waessriges alkylisches Zinkcyanidbad zum galvanischen Abscheiden von hellglaenzenden Zinkueberzuegen