| 摘要 |
A peak detection circuit has two capacitive storage stages. The first storage stage has a fixed discharge time constant, and the second storage stage has two switchably selectable discharge time constants, one of which is less than that of the first storage stage and the other greater. During measurement of a peak level the greater time constant is used to provide an accurate measurement, but between successive measurements the lesser time constant is selected to reduce the waiting time normally required between such measurements.
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