engineering recuitment GATE EE 2023-24 Test Series Power Electronics and Drives Thyristors Thyristor Protection
A thyristor is placed in a circuit with input DC voltage Vs = 200 V, and connected to a load resistance RL. The specified limits of the \(\frac{{dv}}{{dt}},\frac{{di}}{{dt}}\) of SCR are 600 v/μ sec and 25 A/μ sec. For the duty cycle of 0.5, which of the following statement(s) is are correct regarding the snubber circuit parameters?
1
Snubber circuit resistance Rs = 12 Ω
2
Snubber circuit capacitance Cs = 0.014 μF
3
Time constant of snubber circuit is 0.168 μs
4
Time constant of the snubber circuit is 0.336 μs