Consider the circuit shown in Figure (a). A gate pulse  is applied between time instants  and . After , during the MOSFET turn OFF process, it experiences a voltage overshoot.

Based on the  waveforms shown in Figure (b), which one of the following options is correct?

The circuit shown in the figure has reached steady state with thyristor '' in OFF condition. Assume that the latching and holding currents of the thyristor are zero. The thyristor is turned  at . The duration in microseconds for which the thyristor would conduct, before it turns off, is ___ (Round off to 2 decimal places).

The SCR in the circuit shown has a latching current of 40mA. A gate pulse of 50 μs is applied to the SCR. The maximum value of R in  to ensure successful firing of the SCR is ___________.

The typical ratio of latching current to holding current in a 20A thyristor is

An SCR is considered to be a semi-controlled device because

A 1:1 Pulse Transformer (PT) is used to trigger the SCR in the adjacent figure. The SCR is rated at 1.5 kV,250A with 250mA, 150mA, and 150mA, 100mA. The SCR is connected to an inductive load, where L = 150mH in series with a small resistance and the supply voltage is 200V dc. The forward drops of all transistors/diodes and gate-cathode junction during ON state are 1.0 V

The resistance R should be

A 1:1 Pulse Transformer (PT) is used to trigger the SCR in the adjacent figure. The SCR is rated at 1.5 kV,250A with 250mA, 150mA, and 150mA, 100mA. The SCR is connected to an inductive load, where L = 150mH in series with a small resistance and the supply voltage is 200V dc. The forward drops of all transistors/diodes and gate-cathode junction during ON state are 1.0 V

The minimum approximate volt-second rating of the pulse transformer suitable for triggering the SCR should be: (volt-second rating is the maximum of product of the voltage and the width of the pulse that may be applied)

An SCR having a turn ON time of 5µsec, latching current of 50mA and holding current of 40mA is triggered by a short duration pulse and is used in the circuit shown in figure. The minimum pulse width required to turn the SCR ON will be

The triggering circuit of a thyristor is shown in figure. The thyristor requires a gate current of 10 mA, for guaranteed turn-on. The value of R required for the thyristor to turn on reliably under all conditions of variation is

Figure shows a thyristor with the standard terminations of anode (A), cathode (K), gate (G) and the different junctions named J1, J2 and J3. When the thyristor is turned on and conducting

The main reason for connecting a pulse transformer at the output stage of a thyristor triggering circuit is to

Consider the thyristor circuit of figure. The Thyristor is given a triggering pulse after every 10ms. Calculate the duration for which the thyristor remains ON after each triggering pulse. Assume ideal devices and explain briefly the basis.

A triac can be triggered by a gate pulse of ______________ polarity.

The operating state that distinguishes a silicon controlled rectifier (SCR) from a diode is