H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/285 (2006.01) H02H 7/125 (2006.01)
Patent
CA 2614511
The present invention relates to a circuit arrangement for operating at least one electric lamp (EL) having an inverter having at least one first bridge transistor (T3) and one second bridge transistor (T4) which are arranged in series with one another, a first drive circuit (AS1) for the first bridge transistor (T3); a second drive circuit (AS2) for the second bridge transistor (T4); the first drive circuit (AS1) and the second drive circuit (AS2) being designed to drive the first bridge transistor (T3) and the second bridge transistor (T4) such that they switch alternately completely on and off during normal operation of the lamp (EL); and at least one protective apparatus (TS1; TS2); the at least one protective apparatus (TS1; TS2) being designed, in the case of a value for a reference voltage, which is correlated with the voltage across the bridge transistor (T3; T4) which has just been switched off, above a predeterminable limit value, to drive the bridge transistor (T4; T3), which has just been completely switched on, of the series circuit such that it is no longer completely switched on. It moreover relates to an operating method for at least one electric lamp using such a circuit arrangement.
L'invention concerne un ensemble circuit servant à faire fonctionner au moins une lampe électrique (EL) comportant: un onduleur pourvu d'au moins un premier transistor en pont (T3) et d'un deuxième transistor en pont (T4) montés en série; un premier circuit d'amorçage (AS1) pour le premier transistor en pont (T3); un deuxième circuit d'amorçage (AS2) pour le deuxième transistor en pont (T4); le premier circuit d'amorçage (AS1) et le deuxième circuit d'amorçage (AS2) étant conçus pour amorcer le premier transistor en pont (T3) et le deuxième transistor en pont (T4) de sorte que ceux-ci, lors du fonctionnement normal de la lampe (EL), soient mis totalement en circuit et hors circuit en alternance; au moins un dispositif de protection (TS1; TS2) conçu pour amorcer le transistor en pont (T4; T3) du circuit en série, venant d'être mis totalement en circuit, de sorte qu'il ne soit plus mis totalement en circuit lorsqu'une valeur de tension de référence corrélée avec la tension du transistor en pont (T3; T4) venant d'être mis hors circuit est supérieure à une valeur seuil prédéfinie. L'invention concerne également un procédé pour faire fonctionner au moins une lampe électrique dans un tel ensemble circuit.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
LandOfFree
Circuit arrangement and method for operating at least one... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit arrangement and method for operating at least one..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement and method for operating at least one... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1880988