H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 41/36 (2006.01) H05B 41/38 (2006.01) H05B 41/392 (2006.01)
Patent
CA 2415509
The invention relates to a ballast for a lamp having an inverter which comprises at least one switch (S1; S2), and having a drive circuit (10) for alternately opening and closing the at least one switch (S1; S2) wherein the drive circuit (10) is designed to drive the at least one switch (S1; S2) alternately at at least two different frequencies (.omega.a, .omega.b). It also relates to a method for operating a ballast for a lamp having an inverter which comprises at least one switch (S1; S2), and having a drive circuit (10) for alternately opening and closing the at least one switch (S1; S2) wherein the drive circuit drives the at least one switch (S1; S2) alternately at at lease two different frequencies (.omega.a, .omega.b)
Busse Olaf
Heckmann Markus
Sowa Wolfram
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
LandOfFree
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