Electronic transformer for supplying festoon lighting with electricity, comprises rectification bridge with filter, two field effect transistors for voltage chopping and an isolating transformer

摘要

The transformer box (1) is connected (2) to a 110/230 V input which is filtered (4) and rectified by a diode bridge (5). Two field effect transistors (6,7) apply voltage chopping to provide a periodic output (3) of not less than 10kHz through an isolating transformer (8). The output is applied to festoon lighting and may be made to wink (10) if required. Protection is provided by a feedback system