A. 100V浜ゆ祦杞3V鐩存祦阒诲圭数璺镐庝箞锅氾纻鐢甸樆鍜岀数瀹广佺ǔ铡嬩簩鏋佺¤佹庝箞绠楋纻
鐢靛归檷铡嬶纴閲囩敤绋冲帇绠$ǔ铡嬬殑鐢佃矾锛屼竴鑸鍙鑳芥彁渚沵A绾х数娴併
锅囱捐捐¤礋杞戒负10mA锛岄偅涔堬纴鐢靛圭殑瀹规姉绾︿负100/0.01=10000惟
鑻ヤ氦娴佺数棰戠巼涓50Hz锛岄偅涔堬纴1/2蟺fC=1/100蟺C=10000惟
C=1/锛100蟺*10000锛夆増0.3uF銆
鐢甸樆鍜孋骞惰仈锛屼富瑕佺敤浜庡仠鐢垫椂鎻愪緵鏀剧数锲炶矾锛岄樆鍊煎彲浠ュ彇瀹规姉镄10鍊崭互涓娿
绋冲帇绠′竴鑸鍙链3.3V镄勚
鑻ュ笇链涘缑鍒扮ǔ瀹氱殑3V锛屽彲浠ラ噰鐢↙M317銆傝繖镙疯缮链変竴涓濂藉勬槸鍙浠ユ彁渚涜缉澶х殑鐢垫祦銆
姣斿傦纴鑻ラ渶瑕佺数娴佷负100mA锛屼笂杩扮数瀹规斁澶10鍊嶏纴鍙閲囩敤3uF镄勭数瀹广