Electronic ballast for discharge lamps having an eol...

Details Electronic ballast for discharge lamps having an eol... Electronic ballast for discharge lamps having an eol...

H - Electricity

05

B

H05B 41/298 (2006.01)

Patent

CA 2620053

The invention relates to electronic ballast for a discharge lamp (LA1) comprising an end-of-life monitoring circuit (R1, R2, U1, R9, U2-A, U2-B, U3- A, AE). Said circuit contains a current differential amplifier (U1) with a current mirror input.

L'invention concerne un ballast électronique pour une lampe à décharge (LA1), ce ballast comprenant un circuit de contrôle de fin de vie (R1, R2, U1, R9, U2-A, U2-B, U3-A, AE) qui présente un amplificateur différenciateur de courant (U1) pourvu d'une entrée de miroir de courant.

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