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Calculate the maximum frequency for ASCI using the data: R=1 kΩ, C=1 μF.

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Calculate the maximum frequency for ASCI using the data: R=1 kΩ, C=1 μF.

(a) 250 Hz

(b) 280 Hz

(c) 300 Hz

(d) 320 Hz

The question was asked in an interview.

My question is taken from Electrical Drive Systems and Components in chapter Electrical Drive Systems and Components of Electric Drives

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The correct choice is (a) 250 Hz

Explanation: The minimum time period for ASCI is a 4×R×C=4×1×1×.001=4 msec. The total time is the sum of charging and discharging time. The maximum frequency is 1÷f=250 Hz.

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