Kugwiritsa ntchito PTC Thermistor
1. Kuchedwetsa kuyambitsa PTC thermistor Kuchokera pamapindikira a It character ya PTC thermistor, zimadziwika kuti PTC thermistor imatenga nthawi kuti ifike pamalo olimbikira kwambiri mphamvu ikagwiritsidwa ntchito, ndipo kuchedwa kumeneku kumagwiritsidwa ntchito pakuchedwa kuyambitsa. Mfundo yogwiritsira ntchito Galimoto ikayamba, iyenera kuthana ndi inertia yake komanso mphamvu yonyamula katundu (mwachitsanzo, mphamvu ya firiji iyenera kugonjetsedwe ikayamba kompresa ya firiji), motero injiniyo imafunikira mphamvu yayikulu komanso torque kuyamba. Kuzungulirako kuli koyenera, kuti mupulumutse mphamvu, torque yofunikira idzachepetsedwa kwambiri. Onjezani ma koyilo othandizira ku mota, imagwira ntchito ikangoyamba, ndipo imaduka ngati ili yabwinobwino. Lumikizani chotenthetsera cha PTC motsatizana ndi koyilo yoyambira yothandizira. Pambuyo poyambira, PTC thermistor imalowa m'malo otsutsa kwambiri kuti adule koyilo yothandiza, yomwe ingathe kukwaniritsa izi. 2. Kuteteza mochulukira PTC thermistor PTC thermistor yoteteza kuchulukitsitsa ndi chinthu chodzitchinjiriza chomwe chimadziteteza ndikuchira ku kutentha kwachilendo komanso mafunde achilendo, omwe amadziwika kuti "fuse yokhazikika" ndi "fuse yanthawi zikwi khumi". Iwo m'malo fuses chikhalidwe ndipo angagwiritsidwe ntchito ankagwiritsa ntchito overcurrent ndi kutenthedwa chitetezo cha Motors, thiransifoma, kusinthana mphamvu, madera amagetsi, etc. PTC thermistors kwa mochulukira chitetezo kuchepetsa mowa mu mzere wonse mwa kusintha mwadzidzidzi kukana mtengo kuchepetsa mtengo wotsalira wapano. Fusesi yachikhalidwe sichingadziteteze yokha pambuyo poti mzere uwombedwe, ndipo chotenthetsera cha PTC chachitetezo chochulukira chimatha kubwezeretsedwanso kuchitetezo chisanachitike chiwopsezocho chikachotsedwa, ndipo ntchito yake yopitilira muyeso ndi chitetezo chamafuta imatha kuzindikirika pomwe cholakwika chikachitikanso. .Sankhani chotenthetsera cha PTC kuti chitetezeke mochulukira ngati chinthu choteteza kutentha kwambiri. Choyamba, kutsimikizira pazipita yachibadwa ntchito panopa mzere (ndiko kuti, sanali ntchito panopa PTC chotenthetsera chitetezo chochulukirachulukira) ndi malo unsembe wa PTC thermistor kuteteza mochulukira (pa ntchito yachibadwa). ) Kutentha kwakukulu kozungulira, kutsatiridwa ndi chitetezo chapano (ndiko kuti, mphamvu yogwiritsira ntchito PTC thermistor kuti itetezeke mochulukira), mphamvu yogwira ntchito kwambiri, kukana mphamvu kwa zero, ndi zinthu monga kukula kwa zigawozi ziyeneranso kukhala. kuganiziridwa. Mfundo yogwiritsira ntchito Pamene dera liri mu chikhalidwe chabwino, panopa kudutsa PTC thermistor kwa chitetezo chochulukirachulukira ndi zochepa kuposa oveteredwa panopa, ndi PTC thermistor kwa chitetezo mochulukira ali mu chikhalidwe yachibadwa, ndi mtengo kukana pang'ono, zomwe sizingakhudze ntchito yachibadwa ya dera lotetezedwa. Pamene dera likulephera ndipo panopa kwambiri kuposa panopa oveteredwa, PTC thermistor kwa chitetezo chochulukirachulukira amawotcha mwadzidzidzi ndipo ali mu kukana kwambiri boma, kupanga dera mu ndi "ochoka" boma, potero kuteteza dera kuwonongeka.Cholakwikacho chikachotsedwa, chotenthetsera cha PTC chachitetezo chochulukirapo chimabwereranso pamalo otsika, ndipo dera limayambiranso ntchito yabwinobwino. 3. Kuteteza kutentha kwa PTC thermistor Kutentha kwa Curie kwa PTC thermistor sensor ndi kuchokera 40 mpaka 300 ° C. Pamapindikira amtundu wa RT wa sensor ya PTC thermistor, kukwera kotsetsereka kwa mtengo wokana ukalowa m'malo osinthira kungagwiritsidwe ntchito ngati kutentha, mulingo wamadzimadzi, komanso kumva kuyenda. ntchito. Malinga ndi mawonekedwe a kutentha kwa PTC thermistors, amapangidwa kuti agwiritsidwe ntchito poteteza kutentha kwambiri komanso nthawi yozindikira kutentha, ndipo amagwiritsidwa ntchito posinthira magetsi, zida zamagetsi (mamotor, osinthira), zida zamagetsi (ma transistors). Imadziwika ndi kukula kochepa komanso nthawi yoyankha mofulumira. , Yosavuta kukhazikitsa. Kusiyana pakati pa PTC ndi KTY:Siemens amagwiritsa ntchito KTY Choyamba, iwo ndi mtundu wa galimoto kutentha chitetezo chipangizo; PTC ndi kukana ndi kutentha kwabwino kokwanira, ndiko kuti, kukana kumawonjezeka pamene kutentha kumakwera; Chinanso ndi chakuti NTC ndi chopinga chosinthika chokhala ndi kutentha koyipa, ndipo mtengo wotsutsa umachepa pamene kutentha kumakwera, ndipo sikugwiritsidwa ntchito poteteza magalimoto ambiri.KTY ili ndi mwatsatanetsatane kwambiri, kudalirika kwakukulu komanso kukhazikika kwamphamvu.Makamaka ntchito m'munda wa kuyeza kutentha.KTY imakutidwa ndi wosanjikiza wa silicon dioxide insulating zakuthupi, dzenje lachitsulo lomwe lili ndi mainchesi 20mm limatsegulidwa pagawo lotsekereza, ndipo gawo lonse la pansi limapangidwa ndizitsulo.Kugawidwa kwamakono komwe kumapangidwira kuchokera pamwamba mpaka pansi kumapezedwa ndi makonzedwe a makhiristo, choncho amatchedwa kukana kufalikira.KTY ili ndi mzere woyezera kutentha womwe umagwiritsidwa ntchito pamitundu yonse yoyezera kutentha, motero imawonetsetsa kuyeza kwa kutentha kwambiri. 
PT100 platinamu kukana matenthedwe amapangidwa ndikupangidwa pogwiritsa ntchito mfundo yofunikira kuti kukana kwa waya wa platinamu kumasintha ndikusintha kwa kutentha. ) ndi 100 ohms (nambala yomaliza maphunziro ndi Pt100), ndi zina zotero, muyeso wa kutentha ndi -200 ~ 850 ℃. Zomwe zimamva kutentha kwa 10 ohm platinamu kukana kumapangidwa ndi waya wokulirapo wa platinamu, ndipo kukana kutentha mwachiwonekere ndikwabwino kwambiri. 100 ohm platinamu kukana matenthedwe, bola ngati ntchito mu zone kutentha pamwamba 650 ℃: 100 ohm platinamu kukana matenthedwe zimagwiritsa ntchito m'dera kutentha m'munsimu 650 ℃, ngakhale angagwiritsidwe ntchito m'dera kutentha pamwamba 650 ℃, koma m'malo otentha pamwamba pa 650 ℃ Zolakwika za Gulu A siziloledwa. Chisankho cha 100 ohm platinamu kukana kutentha ndi kuwirikiza ka 10 kuposa cha 10 ohm platinamu kukana, ndipo zofunikira pazida zachiwiri ndizofanana ndi kukula kwake. Choncho, 100 ohm platinamu kukana kutentha kuyenera kugwiritsidwa ntchito momwe zingathere poyeza kutentha m'dera la kutentha pansi pa 650 °C.
Nthawi yotumiza: Aug-20-2022 
