A POWER SUPPLY AND A METHOD OF EXTRACTING A BIAS VOLTAGE FROM A POWER SUPPLY

摘要

A power supply providing a bias voltage and being more compact than prior art power supplies is achieved by a power supply comprising a transformer controlled by a primary switch. The transformer having a primary winding and a secondary winding, at least one of said windings comprising a number of sections. The power supply comprises circuitry for extracting a bias voltage across at least one of said sections.