SATURATING MAGNETIC CONTROL OF SWITCHING POWER SUPPLY
Original Publication Date: 1983-Mar-01
Included in the Prior Art Database: 2001-Oct-09
In a self-oscillating switch mode power supply, 100 volts AC is bridge rectified to supply the DC operating power to a power supply oscillator. The oscillator drive feedback is supplied by a control transformer T2 which samples the primary winding current in a power transformer Tl. A center tapped secondary winding of Tl comprising a pair of 17 turn windings provides an AC signal which is rectified to provide a DC output to a load.