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Published bySharleen Cannon Modified over 4 years ago

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Quiz 12.5 S 42.5 A 10.0 S ILIL The periodic waveform below represents the filter inductor current in a push-pull converter, whose output voltage is regulated to 12 volts. 1.What is the value of the inductor in microhenries? 2.What is the operating frequency of the converter? 3.Sketch the voltage waveform at the input of the filter inductor. 46.0 A 39.0 A

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Thyristor (SCR) Converters Direct power control in Utility Applications at High Power Levels P N P N Silicon Controlled Rectifier “SCR”

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Half Wave Rectification v load Trigger pulses delayed from zero crossing by “Commutation Angle”

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Full Wave Rectified Voltage Resulting current to resistive LoadThyristor “turns off ”when current goes to zero

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Resistive Load With Inductance v load i load

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AC Power Control (Triac) v load

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AC Power Control

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