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1. (WO1997017761) CIRCUIT ARRANGEMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017761 International Application No.: PCT/IB1996/001182
Publication Date: 15.05.1997 International Filing Date: 04.11.1996
IPC:
H03K 17/13 (2006.01) ,H03K 17/687 (2006.01) ,H05B 41/282 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
13
Modifications for switching at zero crossing
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
K
PULSE TECHNIQUE
17
Electronic switching or gating, i.e. not by contact-making and -breaking
51
characterised by the use of specified components
56
by the use, as active elements, of semiconductor devices
687
the devices being field-effect transistors
H ELECTRICITY
05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
B
ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41
Circuit arrangements or apparatus for igniting or operating discharge lamps
14
Circuit arrangements
26
in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28
using static converters
282
with semiconductor devices
Applicants:
PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
PHILIPS NORDEN AB [SE/SE]; Kottbygatan 7, Kista S-164 85 Stockholm, SE (SE)
Inventors:
WONG, Stephen, L.; US
Agent:
EVERS, Johannes, H., M.; Internationaal Octrooibureau B.V. P.O. Box 220 NL-5600 AE Eindhoven, NL
Priority Data:
08/553,22807.11.1995EP
Title (EN) CIRCUIT ARRANGEMENT
(FR) STRUCTURE DE CIRCUIT
Abstract:
(EN) In a circuit arrangement including a pair of transistors serially connected together in a totem pole arrangement for bridging two buses at different voltage potentials, a driving scheme for controlling the conductive state of one of the pair of transistors. The scheme includes sensing the voltage difference across this one transistor by comparing a substantially fixed level represented by the voltage potential at one bus to a varying level. The varying level is based on the voltage at a junction joining the two transistors together. When the sensed voltage is at or below a predetermined level, this one transistor is turned on.
(FR) Structure de circuit comprenant une paire de transistors montés en série suivant une disposition en totem pour constituer un pont entre deux bus soumis à des potentiels de tensions différents, et procédure permettant de commander l'état de conduction de l'un des deux transistors. La procédure de commande consiste à mesurer la différence de tension dans ce transistor en comparant une valeur sensiblement fixe, représentée par le potentiel de tension dans un des bus, à une valeur variable. La valeur variable est fondée sur la tension mesurée à un point de jonction entre les deux transistors. Lorsque la tension mesurée se trouve à une valeur inférieure ou égale à un niveau prédéterminé, ce transistor est mis sous tension.
Designated States: CN, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0823147JPH11502391 CN1168202