| 摘要 |
PURPOSE:To eliminate the outputting of a false peak voltage by providing a slope detection circuit for discriminating the leading edge and the tailing edge of a signal to be observed to reset a positive/negative peak holding circuit at a positive or negative peak point. CONSTITUTION:A slope detector 400 and a reset pulse generation means 401 are provided. Even when a positive peak holding circuit 103 is reset to a false voltage E6 at the time T4, the hold voltage is reset to a negative peak at the time T4' and the circuit 103 holds a normal peak voltage E9 at the time T6, hence not a false peak voltage. The negative peak holding circuit 104 does the same. Thus, no false voltage will be outputted for the sample holding 106.
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