POWER SYSTEM WITH SIMPLIFIED, LOW COST SELF-STARTING SELF OSCILLATOR, POWER FACTOR CORRECTION, POWER REGULATION AND OUTPUT OPEN CIRCUIT VOLTAGE REGULATION, OVERLOAD AND SHORT CIRCUIT PROTECTION

摘要

A gas discharge lamp ballast with power factor correction. The gas discharge lamp ballast includes a self-oscillating converter (16) and a power factor correction circuit. The power factor correction circuit has a split winding power transformer (T1), an input storage capacitor (C18) and a current limiting resistor (R26). The ballast also includes a short circuit/overload subcircuit.