At the following circuit, the latching current of the thyristor is assumed 40mA and the thyristor is triggered by a pubse with duration equal to 40uscc. Find the maximum value of resistor R, to guarantee that the thyristor will be stay on after finishing the trigger pulse. The on-state voltage drop of the thyristor is negligible and it is assumed that at the positive edge of the trigger pulse, the thyristor is turned on. R D250 R$ 3L = 0.5" E-90'수 40u sec

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At the following circuit, the latching current of the thyristor is assumed 40mA and the
thyristor is triggered by a pulse with duration equal to 40usec. Find the maximum
valve of resistor R, to guarantee that the thyristor will be stay on after finishing the
trigger pulse. The on-state voltage drop of the thyristor is negligible and it is assumed
that at the positive edge of the trigger pulse, the thyristor is turned on.
I
§R 25ª
E-90+
3L = 0.5"
40i sec
Transcribed Image Text:At the following circuit, the latching current of the thyristor is assumed 40mA and the thyristor is triggered by a pulse with duration equal to 40usec. Find the maximum valve of resistor R, to guarantee that the thyristor will be stay on after finishing the trigger pulse. The on-state voltage drop of the thyristor is negligible and it is assumed that at the positive edge of the trigger pulse, the thyristor is turned on. I §R 25ª E-90+ 3L = 0.5" 40i sec
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