Electronic transformer for lighting
AssigneeLightech Electronics Industries Ltd.
InventorsShaul Barak, Victor Doroshev
Life of this patent
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Abstract
An electronic transformer for lighting includes a rectifier coupled to an inverter an output transformer (T1, T10) and a drive transformer (T2, T11). A protection mechanism (VR1, VR2) is responsively coupled to a winding of the output transformer and to a winding of the drive transformer such that the voltage across each of the windings are approximately equal and opposite during normal operation but differ substantially during a short-circuit.
Claims13
An electronic transformer for lighting including a rectifier coupled to an inverter, an output transformer, and a drive transformer, and a protection mechanism being responsively coupled to a winding of the output transformer and to a winding of the drive transformer such that the voltage across each of the windings are approximately equal and opposite during normal operation but differ substantially during a short-circuit.
An electronic transformer for a lighting system, said electronic transformer including a protection mechanism responsive to a temperature of the electronic transformer and acting to reduce a power output thereof when said temperature exceeds a predetermined temperature.
An electronic transformer for lighting, the transformer including a primary capacitor for providing energy to trigger oscillations of an inverter and further including an auxiliary device for rapidly charging said primary capacitor when an input voltage of said electronic transformer increases in magnitude suddenly from zero.
An electronic transformer for lighting, the transformer including a capacitor connected across the output of an input rectifier for filtering radio frequencies and further including a transistor and a delaying mechanism for connecting said capacitor a short time after an input voltage of the electronic transformer becomes non-zero.
An electronic transformer for lighting, the transformer including a capacitor for providing energy to maintain oscillations of an inverter while an input voltage of the electronic transformer crosses zero.
Dependencies are inferred from the claim text.