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A SIMPLIFIED DC-TO-DC CONVERTER WITH CONSTANT AVERAGE OUTPUT VOLTAGE.
NAVAL RESEARCH LAB WASHINGTON D C
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The article describes dc-to-dc static converter circuit providing a constant average output voltage over a wide range of input voltages. The output, a pulsating dc, is basically pulse-width modulated to obtain a constant average voltage. The system consists of an unsymmetrical converter utilizing a square-loop magnetic core with the characteristic such that the secondary voltage is directly proportional to the primary voltage and the time to saturate the core is inversely proportional to the primary voltage. Each cycle is triggered by a unijunction oscillator at a constant frequency. Author
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