PTC鍩烘湰鐗规�э細

PTC鏄�姝ｆ俯搴︾郴鏁扮數闃伙紙Positive Temperature Coefficient锛夌殑缂╁啓銆傛渶甯哥敤鐨�PTC鏄�浠ラ挍閰搁挕锛�BaTiO3锛変负鍩烘湰缁勬垚鐨勫崐瀵肩數闃讳綋锛屼綆娓╂椂鐢甸樆鍊煎皬锛屽�肩數鎬уソ锛涢珮娓╂椂鐢甸樆鍙樺ぇ锛屽�肩數鎬у樊銆傜數闃婚殢娓╁害鐨勫彉鍖栬�屽彉鍖栨槸PTC鐨勬渶澶х壒鎬э紝涔熷彨鍋�R-T鐢甸樆-娓╁害鐗规��銆�

PTC鍙戠儹鐗囩殑澶栧舰锛�

PTC 鐗规�э細

R-T鐢甸樆-娓╁害鐗规�ц�存槑锛�

鍦ㄦ�ょ畝瑕佽�存槑涓庢亽娓╁姞鐑�鏈夊叧鐨�R-T鐗规�э紝濡備笅鍥撅細

閫氶�濆畾鐢靛帇鍚庯紝

鐢甸樆涓�寮�濮嬪彉灏忥紝鏈�灏忕數闃讳綅缃�鐢垫祦鏈�澶э紝鍔熺巼鏈�澶э紱

鐒跺悗闅忕潃娓╁害澧炲姞锛岀數闃讳細鍙樺ぇ锛屽�傛灉鏁ｇ儹濂斤紝鐢甸樆浼氬湪Rc闄勮繎锛屽�傛灉鏁ｇ儹鏉′欢涓嶅ソ锛岀數闃讳細澧炲ぇ锛屾渶澶т細杈惧埌Rmax锛屾�ゆ椂鍔熺巼鐢垫祦鏈�灏忋��

PTC鑳藉彂鍑虹殑鐑�鍜屽畠鑷�韬�鐨勭粨鏋勭壒鎬ф湁鍏筹紝杈惧埌鏋侀檺鍚庯紝鍗充娇鐢靛帇澧炲姞锛屼篃涓嶄細鏈夊姛鐜囧�炲姞銆�

R25     闆跺姛鐜囩數闃伙細鍙婂湪25ºC鐜�澧冩俯搴︿笅娴嬬殑鐨勯浂鍔熺巼鐢甸樆鍊硷紱

Rmin    鏈�灏忕數闃伙細PTC鍏锋湁鐨勬渶灏忕數闃伙紱

Rmax    鏈�澶х數闃伙細鍏冧欢杈惧埌鏈�楂樻俯搴︽椂鐨勭數闃伙紱

Rc    寮�鍏崇數闃伙細鍗冲眳閲岀偣娓╁害鏃跺�瑰簲鐨勭數闃伙紱

Rp    鏈�澶у伐浣滅數闃伙細涓婇檺宸ヤ綔娓╁害鎵�瀵瑰簲鐨勭數闃伙紱

Tc    灞呴噷娓╁害锛氬畠鏄�PTC鍗婂�肩摲鐩稿彉鐨勫紑濮嬬偣锛屼竴鑸�涓�PTC鍏冧欢Rmin浜屽��
     闃诲�兼椂鎵�瀵瑰簲鐨勬俯搴︾偣锛�

Tmax   鏈�澶ф俯搴︼細鍏冧欢鍙�杈惧埌鐨勬渶楂樻俯搴︼紱

Tp    鏈�澶у伐浣滄俯搴︼細宸ヤ綔鑼冨洿鍐呯殑涓婇檺娓╁害锛�

Tmin   鏈�灏忔俯搴︼細鍏冧欢锛堟�ｅ父锛夊憟鐜版渶灏忕數闃绘椂鐨勬俯搴︼紱

T25   鏍囧噯瀹ゆ俯25鈩�锛�

V-I鐢靛帇-鐢垫祦鐗规�� 

宸﹀浘鏄�鎸�PTCR鍔犱笂鐢靛帇杈惧埌鐑�骞宠　鏃剁數鍘嬪拰鐢垫祦鐨勫叧绯伙紝涔熺О闈欐�佺壒鎬с�傜數鍘嬮�愭笎澧炲姞鏃讹紝鐢垫祦鍛堢洿绾夸笂鍗囷紝杈惧埌鏈�澶у�煎悗鍒欓殢涔嬬洿绾夸笅闄嶃�傜數娴佹渶澶х偣鍙�V-I宄板�硷紝鍦�V-I宄板�肩數鍘嬩互涓嬬淮鎸佸畾鐢甸樆鍖哄煙锛屽湪宄板�间互涓婄數鍘嬫椂锛屽嵆浣挎敼鍙樺�栧姞鐢靛帇涔熺淮鎸佺數鍔熺巼鍑犱箮涓嶅彉鐨勫畾鍔熺巼鍖哄煙銆�

I-T鐢垫祦-鏃堕棿鐗规��

鍦ㄥ彸绀�I-T鍥句腑锛岃嫢PTCR澶勪簬瀹氱數闃诲尯鍩熸椂锛屽垯鐢垫祦涓嶉殢鏃堕棿鑰屽彉鍖栵紝姝ゆ椂褰撴柦鍔�V-I宄板�间互涓婄數鍘嬫椂锛岀敱浜庡叾鐢甸樆浣庤�屾祦杩囧ぇ鐢垫祦锛屼絾闅忕潃鏃堕棿寤堕暱鐢变簬鑷�韬�鍙戠儹鑰屾俯搴︿笂鍗囷紝鏄剧ず鍑虹數闃诲�炲ぇ鑰岀數娴佸噺灏忕殑鐗规�с��

PTC鍏冧欢鍦ㄧ┖璋冧腑浣跨敤鐨勪紭缂虹偣瀵规瘮锛�

PTC鏈�澶т紭鍔垮氨鏄�娓╁害鐨勫畨鍏ㄦ�с�傚彂鐑�鍏冧欢鑷�韬�鏈�楂樹笉瓒呰繃300ºC锛岃�屼笖杩欑�嶆俯搴︾殑瀹夊叏鎬ф槸鏉ヨ嚜鑷�韬�鐨勭壒鎬э紝涓嶉渶鍊熷姪娓╂帶鍣ㄨ皟鑺傦紝纭�淇濋伩鍏嶅彂鐢熺伀鐏句簨鏁呫��

PTC鏄�娓╁害绋冲畾锛屽姛鐜囥�佺數娴併�佺數闃诲彉鍖栵紱甯︽潵闂�棰樻槸鍔熺巼銆佺數娴侀殢鏁ｇ儹鏉′欢鍙樺寲锛涢浂绾挎湁鐢垫祦锛涘彲鎺х�呮帶鍒堕浂绾跨數娴佸ぇ锛涙湁鍔熺巼琛板噺锛�

鎴戝叕鍙�PTC鐢靛姞鐑�鍣ㄧ殑浼樺娍

鎴戝叕鍙�PTC鍦ㄩ�夋潗涓婂潥鎸佷互璐ㄩ噺涓轰富锛屼骇鍝佺患鍚堟�ц兘绋冲畾銆傛垜鍏�鍙搁暱鏈熺粰鍟嗙敤鍜屼腑澶�绌鸿皟閰嶅�楋紝浜嗚В涓�澶�绌鸿皟鐢靛姞鐑�鍣ㄧ殑涓�浜涚壒鎬у拰瑕佹眰锛岄拡瀵�PTC鍦ㄧ┖璋冧腑浣跨敤鐨勯棶棰橈紝鍋氫簡鐩稿簲鏀硅繘锛岃�捐�′簡2绉嶄笓鐢�PTC浜у搧锛屽苟鐢宠�蜂簡涓撳埄銆�