Hana o Thermistor

1. ʻO Thermistor kahi mea pale i hana ʻia me kahi mea kūikawā, a hoʻololi kona waiwai kūʻē me ka mahana. Wahi a ka helu like ʻole o ka hoʻololi kū'ē, ua māhele ʻia nā thermistors i ʻelua mau ʻāpana:

Hoʻokahi ʻano i kapa ʻia ʻo positive temperature coefficient thermistor (PTC), nona ka waiwai kūʻē e piʻi me ka mahana;

Ua kapa ʻia ka ʻano ʻē aʻe ʻo Negative Temperature Coefficient Thermistor (NTC), ka emi ʻana o ka waiwai kūʻē me ka piʻi ʻana o ka mahana.

2. Thermistor ka loina hana

1) Pumehana hoʻopaneʻe wela maikaʻi (PTC)

Hana ʻia ʻo PTC i ka barium titanate ma ke ʻano he kumu nui, a ua hoʻohui ʻia kahi mea liʻiliʻi o nā mea honua i ka barium titanate, a ua hana ʻia e ka sintering kiʻekiʻe. ʻO ka Barium titanate kahi mea polycrystalline. Aia kahi ʻāpana ʻāpana aniani ma waena o ke aniani kūloko a me ke aniani. Ke haʻahaʻa ka mahana, hiki i nā electrons conductive ke hele maʻalahi i ka pākuʻi ma muli o ke kahua uila kūloko. I kēia manawa, e liʻiliʻi kona waiwai kū'ē. Ke piʻi ka mahana, e luku ʻia ke kahua uila i loko, paʻakikī i nā electrons conductive e hele i ka pākuʻi particle, a piʻi ka waiwai kūʻē i kēia manawa.

2) ʻO ka wela wela hoʻopaneʻe ʻino (NTC)

Hana ʻia ka NTC me nā mea metala ʻokikene e like me ka cobalt oxide a me ka nickel oxide. ʻOi aku ka liʻiliʻi o nā electrons a me nā lua o kēia ʻano metala oxide, a ʻoi aku ke kiʻekiʻe o kona waiwai kū'ē. Ke piʻi ka mahana, e piʻi ka helu o nā electrons a me nā puka i loko a e emi iho ka waiwai kū'ē.

3. Nā pono o ka thermistor

ʻO ka ʻike kiʻekiʻe, ʻoi aku ka nui o ka coefficient o ka thermistor ma mua o 10-100 mau manawa nui ma mua o ka metala, a hiki ke ʻike i nā loli wela o 10-6 ℃; ākea ka laulā wela, kūpono nā mea wela maʻamau no -55 ℃ ~ 315 ℃, kūpono nā mea wela kiʻekiʻe no ka mahana Ma luna o 315 ℃ (i kēia manawa hiki ke piʻi ka kiʻekiʻe loa i 2000 ℃), kūpono ka mea wela haʻahaʻa no -273 ℃ ~ -55 ℃; he liʻiliʻi ka nui a hiki ke ana i ka mahana o ke ākea ʻaʻole hiki ke ana ʻia nā thermometer ʻē aʻe

4. Ka hoʻohana ʻana i ka thermistor

ʻO ka noi nui o ka thermistor ma ke ʻano he mea ʻike wela, a ʻo ka ʻike wela ke hoʻohana maʻamau i ka thermistor me kahi koena wela maikaʻi ʻole, ʻo ia hoʻi, NTC. No ka laʻana, hoʻohana mau ʻia nā mea hana hale, e like me nā kuke laiki, nā mea kuke induction, a me nā mea ʻē aʻe.