Pale wela kaʻa a me ke ana wela

Noi o ka PTC Thermistor

 

2. ʻO ka thermistor PTC pale overload

ʻO ka thermistor PTC no ka pale ʻana i ka overload kahi mea pale e pale a hoʻihoʻi hou mai ka wela ʻano ʻole a me ke ʻano o kēia manawa, i ʻike mau ʻia ʻo "resettable fuse" a "ʻumi tausani-manawa fuse".Hoʻololi ia i nā fuses kuʻuna a hiki ke hoʻohana nui ʻia no ka pale overcurrent a me ka wela o nā motors, transformers, hoʻololi i nā lako mana, nā uila uila, etc. koena waiwai o keia manawa.

ʻAʻole hiki i ka fuse maʻamau ke hoʻihoʻi iā ia iho ma hope o ka puhi ʻana o ka laina, a hiki ke hoʻihoʻi ʻia ka PTC thermistor no ka pale ʻana i ke kūlana pre-protection ma hope o ka wehe ʻia ʻana o ka hewa, a hiki ke ʻike ʻia kāna hana overcurrent a me ka thermal protection i ka wā e hana hou ai ka hewa. .E koho i ka thermistor PTC no ka pale kaumaha ma ke ʻano he mea pale wela overcurrent.ʻO ka mea mua, e hōʻoia i ka ʻoi loa o ka hana maʻamau o ka laina (ʻo ia hoʻi, ke ʻano hana ʻole o ka thermistor PTC no ka pale ʻana i ka overload) a me ke kūlana hoʻokomo o ka thermistor PTC no ka pale ʻana (i ka wā maʻamau).) ʻO ka mahana wela kiʻekiʻe loa, a ukali ʻia e ka manawa pale (ʻo ia hoʻi, ke ʻano hana o ka thermistor PTC no ka pale ʻana i ka overload), ka nui o ka voli hana, ka helu ʻana i ka mana zero-power, a me nā mea e like me nā ana o nā mea pono pū kekahi. e noonooia.

Kumukānāwai hoʻohana

Ke noho kaapuni i kahi kūlana maʻamau, ʻo ka mea e hele ana ma ka PTC thermistor no ka pale ʻana i ka overload ʻoi aku ka liʻiliʻi ma mua o ka helu o kēia manawa, a ʻo ka PTC thermistor no ka pale overload aia i kahi kūlana maʻamau, me kahi waiwai kūʻē liʻiliʻi, ʻaʻole ia e pili i ka hana maʻamau o ke kaapuni i pale ʻia.

Ke hāʻule ke kaʻapuni a ʻoi aku ka nui o kēia manawa ma mua o ka manawa i helu ʻia, e wela koke ka PTC thermistor no ka pale ʻana i ka overload a i ke kūlana kūpaʻa kiʻekiʻe, e hana ana i ke kaapuni i kahi kūlana "off", no laila e pale ai i ka pōʻino mai ka pōʻino.Ke hoʻopau ʻia ka hewa, hoʻi koke ka PTC thermistor no ka pale ʻana i ka overload i kahi kūlana haʻahaʻa haʻahaʻa, a hoʻomaka ke kaapuni i ka hana maʻamau.

3. Palena wela PTC thermistor

ʻO ka mahana Curie o ka PTC thermistor sensor mai 40 a 300°C.Ma ka ʻaoʻao ʻano RT o ka PTC thermistor sensor, hiki ke hoʻohana ʻia ka piʻi kiʻekiʻe o ka waiwai kū'ē ma hope o ke komo ʻana i ka ʻāpana hoʻololi e like me ka mahana, ka pae wai, a me ka ʻike kahe.palapala noi.Wahi a nā hiʻohiʻona wela o nā thermistors PTC, ua hoʻolālā ʻia e hoʻohana ʻia i ka pale overheat a me nā manawa ʻike wela, a hoʻohana ʻia i ka hoʻololi ʻana i nā lako mana, nā mea uila (motors, transformers), nā mana mana (transistors).Hōʻike ʻia ia e ka liʻiliʻi liʻiliʻi a me ka manawa pane wikiwiki., maʻalahi e hoʻouka.

ʻO ka ʻokoʻa ma waena o PTC a me KTY:Hoʻohana ʻo Siemens iā KTY

ʻO ka mea mua, he ʻano mea pale wela kaʻa kaʻa;

ʻO ka PTC kahi kū'ē me ka helu wela maikaʻi,ʻo ia hoʻi, piʻi ka waiwai kū'ē i ka piʻiʻana o ka mahana;

ʻO kekahi, ʻo ka NTC he resistor hoʻololi me kahi koena wela maikaʻi ʻole, a emi ka waiwai kūʻē i ka piʻi ʻana o ka mahana, ʻaʻole hoʻohana ʻia no ka pale kaʻa maʻamau.He kiʻekiʻe ka pololei o ka KTY, ka hilinaʻi kiʻekiʻe a me ke kūpaʻa ikaika.Hoʻohana nui ʻia ma ke kahua o ke ana wela.Ua uhi ʻia ʻo KTY me kahi ʻāpana o ka silicon dioxide insulating material, kahi puka metala me ke anawaena o 20mm e wehe ʻia ma ka papa insulating, a ʻo ka papa lalo holoʻokoʻa i hoʻoheheʻe ʻia.Loaʻa ka puʻunaue o kēia manawa mai luna a lalo e ka hoʻonohonoho ʻana o nā kristal, no laila ua kapa ʻia ʻo ia ka diffusion resistance.Loaʻa iā KTY kahi helu wela laina laina ma luna o ke ana wela holoʻokoʻa, no laila e hōʻoiaʻiʻo ana i ke ana wela kiʻekiʻe.

Hoʻolālā ʻia a hana ʻia ʻo PT100 platinum thermal resistance me ka hoʻohana ʻana i ke kumu kumu e hoʻololi ai ka waiwai kūʻē o ka uea platinum me ka loli o ka mahana.) a me 100 ohms (helu helu puka he Pt100), a me nā mea ʻē aʻe, ʻo ke ana o ke ana wela -200 ~ 850 ℃.ʻO ka mea ʻike wela o ka 10 ohm platinum thermal resistance i hana ʻia me ka uea platinum mānoanoa, a ʻike maikaʻi ʻia ka hana pale wela.ʻO 100 ohm platinum thermal resistance, ʻoiai ke hoʻohana ʻia ia i ka pae wela ma luna o 650 ℃: 100 ohm platinum thermal resistance ka mea nui i hoʻohana ʻia i ka pae wela ma lalo o 650 ℃, ʻoiai hiki ke hoʻohana ʻia i ka pae wela ma luna o 650 ℃, akā, ma ka wela wela ma luna o 650 ℃ ʻAʻole ʻae ʻia nā hewa papa A.ʻO ka hoʻonā ʻana o 100 ohm platinum thermal resistance he 10 mau manawa ʻoi aku ka nui ma mua o ka 10 ohm platinum thermal resistance, a ʻo nā koi no nā mea hana lua e like me ke kauoha o ka nui.No laila, pono e ho'ohana 'ia ka 100 ohm platinum thermal resistance e like me ka mea hiki loa no ke ana wela ma ka wahi wela ma lalo o 650 °C.