EP 0246251 B1 19900103 - INSTALLATION FOR PROVIDING A FILTERED AND STABILIZED MAINS VOLTAGE
Title (en)
INSTALLATION FOR PROVIDING A FILTERED AND STABILIZED MAINS VOLTAGE
Publication
Application
Priority
CH 498285 A 19851123
Abstract (en)
[origin: WO8703392A1] The installation is connected between the mains and the user and comprises a circuit in which two complementary parallel circuits (3, 4; 15, 16) are mounted symmetrically in series between the poles of the mains and the poles of the user. The control terminals of the complementary circuits are subjected to reproduction of the ideal mains voltage, coinciding in phase with the mains voltage and produced by a damped parallel oscillating circuit (12) which stabilizes transients, is excited by the mains and is tuned to the mains frequency. The complementary circuits are fed from the mains with capacitor support. Small mains voltage anomalies are smoothed out by the first complementary circuit (3, 4), which for this purpose uses a small supply voltage and thus has very small losses. Large mains anomalies are eliminated by the second complementary circuit (15, 16), which is fed with a larger supply voltage, and, because of the increase in the threshold voltage of its transistors, comes into service only when the first complementary circuit is fully operated. To prevent reverse current, the supply lines of the first complementary circuit (3, 4) are provided with diodes (7, 8).
IPC 1-7
IPC 8 full level
G05F 3/04 (2006.01)
CPC (source: EP)
G05F 3/04 (2013.01)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 8703392 A1 19870604; AU 6599686 A 19870701; DE 3668082 D1 19900208; EP 0246251 A1 19871125; EP 0246251 B1 19900103
DOCDB simple family (application)
CH 8600159 W 19861119; AU 6599686 A 19861119; DE 3668082 T 19861119; EP 86906261 A 19861119