Ludovicus Oostvogels - Eindhoven, NL Lucas Vos - Hanover Park IL, US Angelo Gavas - Arlington Heights IL, US Enrique Sotelo Gallardo - Monterrey NL, MX
International Classification:
H05B037/02
US Classification:
315/291000, 315/307000
Abstract:
In a TRIAC dimmable ballast for a discharge lamp comprising a buffer capacitor and a control circuit, a shut off circuit is incorporated for switching off the control circuit when the voltage over the buffer capacitor drops below a predetermined value due to a high phase angle adjusted in the TRIAC dimmer.