| 摘要 |
PURPOSE:To measure the approximate value of a impulse voltage easily with a simple means, by differentiating an input signal including the impulse voltage, comparing a differentiated signal with a reference voltage and storing a compared result. CONSTITUTION:Input voltage including the impulse voltage (amplitude Ei) is differentiated by an input circuit 1 and a divided voltage kEi is supplied to a comparator 5, which compares the input voltage with the reference voltage Es of a voltage generating circuit 4. When kEi>Es, the comparator 5 generates an output and stores the output in a memory circuit 6. A display circuit 7 displays the change (stored contents) of the output from the memory circuit 6. Thus the approximate value of the impulse voltage can be easily measured by the simple means. |
