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  1. A horizontal output stage is cutoff for retrace and 40% of trace. If time for each horizontal line is 64 μs and retrace time is 12 μs, the transistor is conducting for about

    2. A.
    64 μs
    B.
    6.4 μs
    C.
    31 μs
    D.
    3.1 μs

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    Answer : Option C

    Explanation :

    Total time for each horizontal line = .

    Time for trace = 64 - 12 = 52 μs.

    Time for which transistor is not conducting = 12 + 0.4 x 52 = 32.8 ms.

    Time for which transistor is conducting = 64 - 32.8 = 31 μs.

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