EP 0597897 B1 19950215 - DEVICE FOR SUPPLYING POWER TO A NON-LINEAR LOAD.
Title (en)
DEVICE FOR SUPPLYING POWER TO A NON-LINEAR LOAD.
Title (de)
EINRICHTUNG ZUR VERSORGUNG EINER NICHTLINEAREN LAST.
Title (fr)
DISPOSITIF D'ALIMENTATION D'UNE CHARGE NON LINEAIRE.
Publication
Application
Priority
- FR 9110176 A 19910809
- FR 9200656 W 19920708
Abstract (en)
[origin: FR2680297A1] A power supply device connected to an a.c. network and including a rectifier (5), a high-voltage transformer (8) with a secondary winding (19) connected to the load (1), a high-frequency switching element (14) connected to a control circuit (16), and a measuring device (28) for measuring current intensity in the primary circuit of the transformer. Said measuring device (28) comprises a sensor (30) combined with a device (34) for recording a voltage which is proportional to the intensity flowing through the element (14), and averaged over a high-frequency oscillation period, devices (43, 38, 41) for processing values such as the output value of device (34), the rectified mains voltage value ¦u¦, and a set power value P0, as well as an error amplifier (46), the output signal of which controls circuit (16). The resulting switching frequency control provides both a variation in mains current intensity which is proportional to the mains voltage supply, and power consumption which is equal to said set power value P0. The device is useful for supplying, power to a microwave oven magnetron.
IPC 1-7
IPC 8 full level
H05B 6/66 (2006.01)
CPC (source: EP)
H05B 6/666 (2013.01)
Designated contracting state (EPC)
DE GB NL SE
DOCDB simple family (publication)
FR 2680297 A1 19930212; FR 2680297 B1 19961025; DE 69201445 D1 19950323; DE 69201445 T2 19950629; EP 0597897 A1 19940525; EP 0597897 B1 19950215; WO 9303587 A1 19930218
DOCDB simple family (application)
FR 9110176 A 19910809; DE 69201445 T 19920708; EP 92915711 A 19920708; FR 9200656 W 19920708