Control circuit for a half bridge branch in cooker power supply has transformer control with three windings with primary and one secondary wound in the same sense opposite to the second secondary

摘要

A control circuit (11) for a half-bridge branch (13) in a cooker (30) power supply comprises a transformer (20) control with at least three windings (21,24,26) on a core. The primary (21) and one secondary (26) are wound in the same sense and the other secondary (24) is counter wound with the secondary windings supplying the control signals for the power supply (28,29).