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????×?1950?ê????·??????????????ü????·???BaTiO3??????°??????ó?????????????????¨PTC???????????????????ü?????????????????????????±??????????·?????????????·??????????????ú?????¤???????????ü?????§???¨???????????÷???ì?ò???????????????±?????ó????·????????°??????

????????????×????????ò????PTC??????×è???????????????????????í?????????°??????????PTC????????????????????????????PTC???????????????????????????????à?????????×????PTC??????×è?÷?????????±??×??????????°?°????·??í??????????????????

??????×è?÷°???×è????????·??????????????¨PTC????????×è?÷?????????????¨NTC????????×è??×è?÷??PTC??Positive Temperature Coefficient??????????????????????????NTC??Negative Temperature Coefficient ??????????????????????????????PTC??????×è?÷???????????á±????÷????·?????????°????????????????????±???????????¨???±??????×è???á????????????±??????????????????ü??×è????????3--7????????????????×??ù±?????×è--??????????--???÷?????÷???±????????PTC??????????×è????·????????¤????×??è±????????°???????÷???¤???ú?·??????????×??????????????????÷±??¤???í?????????????????????????????????????±??×÷????

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????PTC????????????????60?ê?ú??????×????????·???????§???????·???????????????????ó?????????ú????±?°??????????????÷?°????·??????????????????ú?·?à?????·?????????ì?????ó?ú?ú??????

????PTC????????????????60?ê?ú??????×???PTC?????·????×÷?????·?????????????????????ó??·????????ú????±??¤???????????????÷?°????·???????????????????±???PTC????×????????°???????ú??PTC??????????????1964?ê??60?ê?ú???????·????80?ê?ú?ó???÷???ú?·??????????????????

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PTC??????×è?????·?????°?????÷????????
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PTC??????×è???????÷????????????
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PTC??????×è????????????????
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[???ù±?zona??2004-03-13 13:25????±à??]

????PTC????×??????????????????à×???????×è????????

PTC??????????

R????×è??Resistance( ?? )
Rc????????×è??Switch resistance
Rp??×??ó?¤×÷??×è
Maximum operational resistance
Rmax??×??ó??×è??Maximum resistance
Rmim??×?????×è??Minimun resistance
T??????Temperature( ?? )
Tc??????????Curie temperature
Tp??×??ó?¤×÷????
Maximum operational temperature
Tmax??×??ó??????Maximum temperature
Tmin??×?????????Minimun temperature
??????×è????????
Temperature coefficient