SCR

An ideal sinusoidal voltage source $v(t) = 230\sqrt{2} \sin(2\pi \times 50t)$ V feeds an ideal inductor L through an ideal SCR with firing angle $\alpha = 0^{\circ}$. If $L = 100$...

A single-phase $$SCR$$ based $$ac$$ regulator is feeding power to a load consisting of $$5\,\,\Omega $$ resistance and $$16$$ $$mH$$ inductance. The input supply is $$230$$ $$V,$$...

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

Circuit turn-off time of an $$SCR$$ is defined as the time

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 $$1.5$$ $$kV$$, $$250$$ $$A$$ with $${{\rm I}_L} = 250\,mA,\,\,{...

A single phase full $$-$$ wave half $$-$$ controlled bridge converter feeds an inductive load. The two $$SCR's$$ in the converter are connected to a common $$DC$$ bus. The converte...

In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.

An $$SCR$$ is connected in series with a $$300V$$ $$ac$$ supply and a $$300$$ ohms load resistor calculate (a) The reading of a moving coil ammeter connected in series with the loa...

Which of the following does not cause permanent damage of an $$SCR?$$