CHOPPER TYPE STABILIZED POWER SOURCE

摘要

PURPOSE:To compensator variations in the output voltage due to a load change with a simple configuration by regulating the turning ON timing of a trigger element with a discharging current by a feedback circuit. CONSTITUTION:When a switching element Q1 of the primary side of a transformer T is OFF, energy is transmitted to the secondary side winding. The output voltage of a sub winding B is integrated by an integrator having a variable resistor 12 and a capacitor 14 during a period that the element Q1 is OFF. The voltage across the capacitor 14 is applied to a PUT17. The output of a sub winding D is rectified and smoothed during a period that the element Q1 is OFF, and stabilized by the discharging current through a feedback circuit 30.