Originally posted by citfta
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The underlying principles of ferroresonant transformer technology have largely remained unchanged over the years. A Ferroresonant Inverter is commonly referred to as a "passive regulating device." A simple square wave generator applies power to the primary winding of a ferroresonant constant-voltage transformer. Since the transformer is designed to operate in the saturation range of its operating curve, resonance in conjunction with leakage reactance converts the square wave to a sine wave. In addition, because the transformer core is saturated, it provides inherent current limiting, noise rejection and output voltage regulation without the need for feedback elements and circuitry.
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