| 摘要 |
<p>A converter module for dimming LEDs, comprising a switched/clocked converter, e.g a flyback, adapted to supply power to at least one LED, the converter being operated in a borderline mode and comprising a transformer with an additional bifilar winding coupled to its primary winding, a detection means (an auxiliary winding inductively coupled to the transformer) adapted to generate an activation signal based on a detected current/voltage input of the converter, a switching stage adapted to connect the bifilar winding to the negative supply rail (through a diode) according to the activation signal.</p> |
