H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/14 (2006.01) H05B 41/28 (2006.01)
Patent
CA 2263696
According to the invention, a pump support choke (L1) is added to a half bridge oscillatory circuit for a low-pressure discharge lamp (E) with a capacitive pumping branch. Said support choke improves the pumping action of the pumping branch and its frequency response characteristics. Furthermore, an additional capacitor (C1) is mounted between the pumping branch and the power supply branch connected thereto, said capacitor acting in conjunction with the pumping branch as a trapezoidal capacitor and further improving the frequency response characteristics of the pumping branch.
L'invention concerne un circuit oscillateur demi-pont destiné à une lampe à décharge basse pression (E) et comprenant une branche de pompage capacitive. Une bobine d'inductance support de pompage (L1) est ajoutée à ce circuit pour améliorer l'effet de pompage de la branche de pompage et sa réponse en fréquence. En outre, un condensateur (C1) supplémentaire est implanté entre la branche de pompage et la branche d'alimentation raccordée à cette dernière. Ce condensateur agit en liaison avec la branche de pompage comme condensateur en trapèze, ce qui apporte une nouvelle amélioration de la réponse en fréquence de la branche de pompage.
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
LandOfFree
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