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銆�銆�鎭掓祦婧愬垎鐐烘祦鍑�(Current Source)鍜屾祦鍏�(Current Sink)鍏╃ó褰㈠紡銆�
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銆�銆�2.鏈�甯哥敤鐨勭啊鏄撴亽娴佹簮濡傚湒(1) 鎵�绀猴紝鐢ㄥ叐鍙悓鍨嬩笁妤电锛屽埄鐢ㄤ笁妤电鐩稿皪绌�(w臎n)瀹氱殑be闆诲浣滅偤鍩烘簴(zh菙n)锛�闆绘祦鏁�(sh霉)鍊肩偤锛欼 = Vbe/R1銆�
銆�銆�閫欑ó鎭掓祦婧愬劒(y艒u)榛炴槸绨″柈鏄撹锛岃�屼笖闆绘祦鐨勬暩(sh霉)鍊煎彲浠ヨ嚜鐢辨帶鍒�锛屼篃娌掓湁浣跨敤鐗规畩鐨勫厓浠讹紝鏈夊埄浜庨檷浣庣敘(ch菐n)鍝佺殑鎴愭湰銆傜己榛炴槸涓嶅悓鍨嬭櫉鐨勭瀛�锛屽叾be闆诲涓嶆槸涓�鍊嬪浐瀹氬��锛屽嵆浣挎槸鐩稿悓鍨嬭櫉锛屼篃鏈変竴瀹氱殑鍊嬮珨宸暟銆傚悓鏅備笉鍚岀殑宸ヤ綔闆绘祦涓�锛岄�欏�嬮浕澹撲篃鏈冩湁涓�瀹氱殑娉㈠嫊銆傚洜姝や笉閬╁悎绮惧瘑鐨勬亽娴侀渶姹�銆�
銆�銆�3.鐐轰簡鑳藉绮剧⒑杓稿嚭闆绘祦锛岄�氬父浣跨敤涓�鍊嬮亱鏀句綔鐐哄弽楗�锛屽悓鏅備娇鐢ㄥ牬鏁堟噳(y墨ng)绠￠伩鍏嶄笁妤电鐨刡e闆绘祦灏�(d菐o)鑷寸殑瑾ゅ樊銆傚吀鍨嬬殑閬嬫斁鎭掓祦婧愬鍦�(2)鎵�绀猴紝濡傛灉闆绘祦涓嶉渶瑕佺壒鍒ョ簿纰�锛屽叾涓殑鍫存晥鎳�(y墨ng)绠′篃鍙互鐢ㄤ笁妤电浠ｆ浛銆�
銆�銆�闆绘祦瑷堢畻鍏紡鐐猴細I = Vin/R1
銆�銆�閫欏�嬮浕璺彲浠ヨ獚鐐烘槸鎭掓祦婧愮殑妯�(bi膩o)婧�(zh菙n)闆昏矾锛岄櫎浜嗚冻澶犵殑绮惧害鍜屽彲瑾�(di脿o)鎬т箣澶�锛屼娇鐢ㄧ殑鍏冧欢涔熼兘鏄緢鏅亶鐨�锛屾槗浜庢惌寤哄拰瑾�(di脿o)瑭�銆傚彧涓嶉亷鍏朵腑鐨刅in閭勯渶瑕佺敤鎴堕澶栨彁渚�銆�
銆�銆�寰炰互涓婂叐鍊嬮浕璺彲浠ョ湅鍑�锛屾亽娴佹簮鏈夊�嬪畾寮�锛屽氨鏄埄鐢ㄤ竴鍊嬮浕澹撳熀婧�(zh菙n)锛屽湪闆婚樆涓婂舰鎴愬浐瀹氶浕娴�銆傛湁浜嗛�欏�嬪畾寮忥紝鎭掓祦婧愮殑鎼缓灏卞彲浠ユ摯灞曞埌鎵�鏈夊彲浠ユ彁渚涢�欏�嬧�滈浕澹撳熀婧�(zh菙n)鈥濈殑鍣ㄤ欢涓�銆�
銆�銆�4.鏈�绨″柈鐨勯浕澹撳熀婧�(zh菙n)锛屽氨鏄┅(w臎n)澹撲簩妤电锛屽埄鐢ㄧ┅(w臎n)澹撲簩妤电鍜屼竴鍙笁妤电锛屽彲浠ユ惌寤轰竴鍊嬫洿绨℃槗鐨勬亽娴佹簮锛屽鍦�(3)鎵�绀�銆�
銆�銆�闆绘祦瑷堢畻鍏紡鐐猴細I = (Vd-Vbe)/R1
銆�銆�5.TL431鏄彟澶栦竴鍊嬪父鐢ㄧ殑闆诲鍩烘簴(zh菙n)锛屽埄鐢═L431鎼缓鐨勬亽娴佹簮濡傚湒(4)鎵�绀�锛屽叾涓殑涓夋サ绠℃浛鎻涚偤鍫存晥鎳�(y墨ng)绠″彲浠ュ緱鍒版洿濂界殑绮惧害
銆�銆�闆绘祦瑷堢畻鍏紡鐐猴細I = 2.5/R1
銆�銆�6.浜嬪涓婏紝鎵�鏈夌殑涓夌绌�(w臎n)澹�锛岄兘鏄緢涓嶉尟鐨勯浕澹撴簮锛岃�屼笖涓夌绌�(w臎n)澹撶殑绮惧害宸茬稉(j墨ng)寰堥珮锛岄渶瑕佺殑缍寔闆绘祦涔熷緢灏�銆傚埄鐢ㄤ笁绔┅(w臎n)澹撴(g貌u)鎴愭亽娴佹簮锛屼篃鏈夐潪甯稿ソ鐨勬�у児姣�锛屽鍦�(5)鎵�绀�銆傞�欑ó绲�(ji茅)妲�(g貌u)鐨勬亽娴佹簮锛屼笉閬╁悎澶皬鐨勯浕娴�锛屽洜鐐洪�欏�嬫檪鍊�锛屼笁绔┅(w臎n)澹撹嚜韬殑缍寔闆绘祦鏈冨皫(d菐o)鑷磋純澶х殑瑾ゅ樊銆傞浕娴佽▓绠楀叕寮忕偤锛欼 = V/R1锛屽叾涓璙鏄笁绔┅(w臎n)澹撶殑绌�(w臎n)澹撴暩(sh霉)鍊笺��
銆�銆�7.瀵﹂殯鐨勯浕璺腑锛屾湁涓�浜涚壒娈婄殑绲�(ji茅)妲�(g貌u)锛屼篃鍙互鎻愪緵寰堝ソ鐨勬亽娴佺壒鎬э紝鏈�鍏稿瀷鐨勫氨鏄竴鍊嬪緢楂樼殑闆诲閫氶亷涓�鍊嬮浕闃诲湪涓�鍊嬩綆澹撹ō(sh猫)鍌欎笂褰㈡垚闆绘祦锛屽鍦�(6)锛岄�欏�嬫亽娴佹簮鐨勭簿搴�锛屽彇姹轰簬楂樺鐨勭簿纰哄害鍜屼綆澹撹ō(sh猫)鍌欐湰韬皫(d菐o)鑷寸殑闆诲娉㈠嫊銆傚湪涓�浜涢枊闂�(gu膩n)闆绘簮闆昏矾涓�锛岄�欏�嬬祼(ji茅)妲�(g貌u)鐢ㄤ締绲︿笁妤电鎻愪緵鍋忕疆闆绘祦銆�
銆�銆�闆绘祦瑷堢畻鍏紡鐐猴細 I = Vin/R1
銆�銆�鍊煎緱涓�鎻愮殑鏄�锛屼互涓婇�欎簺鎭掓祦婧愬苟涓嶉兘閬╁悎瀹夊煿浠ヤ笂绱氬垾鐨勬亽娴佹噳(y墨ng)鐢�锛屽洜鐐洪浕闃讳笂闈㈠お澶х殑闆绘祦鏈冨皫(d菐o)鑷寸櫦(f膩)鐔卞毚(y谩n)閲�銆�
銆�銆�鍦�(2)鍙互閫氶亷浣跨敤鏇村皬鐨勯浕闃讳締闄嶄綆閫欏�嬬啽閲�锛屼笉閬庡湪鍠浕婧愪緵闆绘ā寮忎笅锛屽鏁�(sh霉)閬嬫斁閮戒笉鑳芥湁鏁堟娓拰杓稿嚭鎺ヨ繎鍦版垨鑰匳cc鐨勯浕澹擄紝鍥犳蹇呴爤浣跨敤鐗规畩鐨勫櫒浠舵墠鑳介仈鍒拌姹�銆傛湁鍊嬬啊鍠殑杈︽硶鏄�氶亷涓�鍊嬬┅(w臎n)澹撳櫒浠讹紙绌�(w臎n)澹撶锛屾垨鑰匱L431绛夛級鍋忕疆闆婚樆涓婇潰鐨勯浕澹�锛屼娇寰楅�欏�嬮浕澹撻�插叆閬嬫斁鐨勬娓寖鍦�銆�
銆�銆�鎭掓祦婧愮殑瀵﹁唱(zh矛)鏄埄鐢ㄥ櫒浠跺皪闆绘祦閫茶鍙嶉锛屽嫊鎱�(t脿i)瑾�(di脿o)绡�(ji茅)瑷�(sh猫)鍌欑殑渚涢浕鐙�鎱�(t脿i)锛屽緸鑰屼娇寰楅浕娴佽定浜庢亽瀹�銆傚彧瑕佽兘澶犲緱鍒伴浕娴侊紝灏卞彲浠ユ湁鏁堝舰鎴愬弽楗�锛屽緸鑰屽缓绔嬫亽娴佹簮銆�
銆�銆�8.鑳藉閫茶闆绘祦鍙嶉鐨勫櫒浠讹紝閭勬湁闆绘祦浜掓劅鍣�锛屾垨鑰呭埄鐢ㄩ湇鐖惧厓浠跺皪闆绘祦鍥炶矾涓婃煇浜涘櫒浠剁殑纾佸牬閫茶鍙嶉锛屼篃鍙互鍒╃敤鍥炶矾涓婄殑鐧�(f膩)鍏夊櫒浠讹紙渚嬪鍏夐浕鑰﹀悎鍣�锛岀櫦(f膩) 鍏夌绛夛級閫茶鍙嶉銆傞�欎簺鏂瑰紡閮借兘澶犳(g貌u)鎴愭湁鏁堢殑鎭掓祦婧�锛岃�屼笖鏇撮仼鍚堝ぇ闆绘祦绛夌壒娈婂牬鍚�锛屼笉閬庡洜鐐洪�欎簺瀵︾従(xi脿n)褰㈠紡鐨勯浕璺兘姣旇純寰�(f霉)闆滐紝閫欓噷灏变笉涓�涓�浠嬬垂浜�銆�
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銆�銆�鈶㈢敱浜庢韩搴﹀皪闆嗘垚閬嬫斁鍙冩暩(sh霉)褰遍熆涓嶅灏嶆櫠楂旂鎴栧牬鏁堟噳(y墨ng)绠″弮鏁�(sh霉)褰遍熆涔嬮’钁� ,鐢遍泦鎴愰亱鏀炬(g貌u)鎴愮殑鎭掓祦婧愬叿鏈夌┅(w臎n)瀹氭�ф洿濂� ,鎭掓祦鎬ц兘鏇撮珮涔嬪劒(y艒u)榛� .灏ゅ叾鍦ㄨ矤杓変竴绔渶鎺ュ湴 ,瑕佹眰澶ч浕娴佺殑鍫村悎 ,鐛插緱浜嗗唬娉涙噳(y墨ng)鐢�銆�
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