H - Electricity – 05 – B
Patent
H - Electricity
05
B
H05B 37/00 (2006.01) H05B 39/00 (2006.01) H05B 39/09 (2006.01)
Patent
CA 2509874
An electronic transformer for halogen incandescent lamps is equipped with a self-commutated half-bridge inverter. The half-bridge inverter contains a start circuit with a start capacitor (C3), which starts commutation of the half-bridge inverter after each mains half-wave by driving a lower half-bridge transistor (T2). The start circuit has to be suppressed while the half-bridge inverter is commutating. This is achieved according to the invention by discharging the start capacitor (C3) when-ever an upper half-bridge transistor is turned on (T1). This is done by an amplifier element (V1), which is driven via a high-pass filter (C4) from the half-bridge midpoint (M).
Franck Felix
Haeusser-Boehm Helmut
Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh
Smart & Biggar
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