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Q#1
Power Semiconductor Devices
GATE EE 2023
NAT
+2 marks
-0 marks
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).
Explanation:
If circuit is in steady state with T : OFF
C : Open L : shoot
vc = 100V iL = 0A
Now when T : ON, a LC oscillator is formed
Load current 
= 25 + 50 sinω0t
T turns OFF when IT = 0
25 + 50 sinω0t = 0
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