EP 0402367 B1 19930512 - ACTIVE FILTER
Title (en)
ACTIVE FILTER
Publication
Application
Priority
DE 3804074 A 19880210
Abstract (en)
[origin: WO8907853A1] A power transformer, such as a mains appliance, generates a d.c. voltage by means of a rectifier (1) connected to a capacitative element (10) via a charging current limiting resistor (6) which has a high value. A variable resistor arranged parallel to the charging current limiting resistor (6) serves as a control element in a control circuit whose control value is the voltage at the capacitative element (10). A current-regulating circuit (33) for regulating the current flowing through the control element is connected in cascade or in parallel with the voltage-regulating circuit (34).
IPC 1-7
IPC 8 full level
G05F 1/569 (2006.01); H02H 9/00 (2006.01)
CPC (source: EP)
G05F 1/569 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8907853 A1 19890824; DE 3804074 A1 19890824; DE 3804074 C2 19900419; DE 58904360 D1 19930617; EP 0402367 A1 19901219; EP 0402367 B1 19930512
DOCDB simple family (application)
EP 8900121 W 19890209; DE 3804074 A 19880210; DE 58904360 T 19890209; EP 89902253 A 19890209