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Title: 具輸出級之電壓峰?檢知器 PEAK VOLTAGE DETECTOR WITH OUTPUT STAGE
Authors: 蕭明椿
Contributors: 修平技術學院
Date: 2004-11-01
Issue Date: 2008-11-06T08:22:51Z
Abstract: 本發明提出一種新穎架構之電壓峰值檢知器,其係由一差動放大器1、一充電電晶體2、一電容器C以及一輸出級3所組成,其中,該差動放大器1係以非對稱式結構來設計,亦即僅使用單邊之負載電晶體,且該負載電晶體與該充電電晶體2共同構成一電流鏡。該差動放大器1係做為比較器使用,該充電電晶體2係做為充電器使用,用以提供電容器C所需之充電電流,而該輸出級3則用以調整該電容器C上之電壓信號V(C),以便精確地輸出該輸入信號之峰值電壓。本發明所提出之電壓峰值檢知器,不但能精確地檢測出輸入信號之峰值電壓,並且兼具電路結構簡單、佔用的晶片面積小以及有利於裝置之小型化等多重功效,同時亦設置有輸出級以便有效防止因外部電路之擷取動作而遭致破壞所保持之輸入峰值電壓。
Appears in Collections:[Department of Electrical Engineering & Graduate Institute] Patents

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