ECE :: Power Electronics
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In a certain inverter circuit each thyristor carries 26.67 A for 60°, 13.33 A for 120° and zero A for 180° of the cycle. The rms current of thyristor is
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In a single phase full converter fed by a source having inductance, the number of thyristors conducting during overlap is
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The cut in voltages for germanium and silicon diodes respectively as
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An SCR is triggered at 80° in the positive half cycle, only. The rms anode current is 25 A. If the firing angle is changed to 160°, the rms current is likely to be
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The output wave of a cycloconverter consists of a number of segments derived from the input wave.
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A class A chopper has an input voltage of 200 V. Ton = 1.5 ms and Toff = 4.5 ms. The duty cycle, average output voltage and ripple factor respectively are
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In a parallel inverter the turn off time tq of thyristor and values of commutating elements L and C are related as
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A TRIAC can be turned on :
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