The turn-on time of an SCR with inductive load is 20 µs. The puls train frequency is 2.5 KHz with a mark/space ratio of 1/10, then SCR will___________?
Correct answer: A. Turn on
- A. Turn on
- B. Not turn on
- C. Turn on if inductance is removed
- D. Turn on if pulse frequency us increased to two times
Explanation
At 2.5 kHz, the pulse period is 400 μs; with a 1:10 mark/space ratio, the mark duration is about 36.4 μs. Since this exceeds the 20 μs turn-on time, the SCR will turn on.
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