A half - bridge circuit is used as a DC voltage source. We know the ripple curre

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A half - bridge circuit is used as a DC voltage source. We know the ripple current is 0.02 A. The inpu voltage is 20 V. The output voltage is 4 V. The total period is 10 mus with each switch's turning - on time 4 mus. The output inductance is 0.2 mH. What is the transformer turn ratio (N2/N1). For a push - pull circuit, the input voltage is 30 V. We know the ratio of the transformer turn N1/N2 is 2:1. Each switch is turned on 6 mus with a deadtime of 2 us. Draw the voltage waveform across one winding (LI') of the secondary stage. For an ideal inductor wound around a toroidal core. Its average circumference is 6 cm, and relative permeability (fir) is 2000. If we cut a slice (1 mm in length) out of the core to make a gap so to increase the linearity of the core, explain whether the inductance increases or decreases. An inductor has a magnetic core with uniform H and B. Its volume is 20cm3. When applied current from t0 to tl so H increases from 0 to 10 A/m, the H - B curve is shown in the following. How much energy does the inductor store from tO to t1? A turn - off snubber and a turn - on snubber can be combined in a single circuit, shown in the figure. Explain how it is working as a turn - on - snubber assuming diode(D) has finite turn - on and turn - off time. Also assuming swith S and D, can be turned on and off instantaneously.

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