Nchekwa okpomọkụ moto na nha okpomọkụ

Ngwa nke PTC Thermistor

 

2. Nbufe nchebe PTC thermistor

PTC thermistor maka nchekwa oke ibu bụ ihe nchebe nke na-echekwa ozugbo ma gbakee site na oke okpomọkụ na ugbu a na-adịghị mma, nke a na-akpọkarị "fuse resettable fuse" na "fiusi puku oge iri". Ọ na-anọchi omenala fuses na ike n'ọtụtụ ebe na-eji maka overcurrent na overheating nchebe nke Motors, transformers, ịmafe ike onunu, electronic sekit, wdg PTC thermistors maka ibufe nchebe ịgba oriri na dum akara site na mberede mgbanwe nke iguzogide uru iji belata. uru fọdụrụ ugbu a.

Ngwa ngwa ọdịnala enweghị ike ịgbake n'onwe ya mgbe agbachara akara ahụ, yana PTC thermistor maka nchekwa oke ibu nwere ike iweghachi ya na ọnọdụ nchekwa tupu ewepụrụ mmejọ ahụ, yana ọrụ nchekwa ya na oke ọkụ nwere ike mezuo mgbe mmejọ ahụ mere ọzọ. .Họrọ thermistor PTC maka nchekwa oke ibu dị ka ihe nchekwa ọkụ na-agabiga oke. Mbụ, gosi na kacha nkịtị na-arụ ọrụ ugbu a nke ahịrị (ya bụ, ndị na-adịghị arụ ọrụ ugbu a nke PTC thermistor maka oke ibu nchedo) na nwụnye ọnọdụ nke PTC thermistor maka ibufe nchebe (n'oge nkịtị ọrụ). ) Ọnọdụ okpomọkụ kachasị elu, nke na-esote nchebe ugbu a (ya bụ, arụ ọrụ ugbu a nke thermistor PTC maka nchebe ibu ibu), voltaji na-arụ ọrụ kacha elu, nkwụsi ike efu efu, na ihe ndị dị ka akụkụ nke ihe ndị ahụ kwesịkwara. ga-atụle.

Ụkpụrụ ngwa

Mgbe sekit dị na ọnọdụ nkịtị, nke ugbu a na-agafe na PTC thermistor maka nchebe ibu ibu bụ ihe na-erughị ọkwa ugbu a, na PTC thermistor maka nchebe ibufe dị na steeti nkịtị, na obere ihe mgbochi, nke na-agaghị emetụta ya. ọrụ nkịtị nke sekit echedoro.

Mgbe sekit na-ada na nke ugbu a nke ukwuu karịa ndị e gosiri ugbu a, PTC thermistor maka nchebe ibu ibu na mberede na-ekpo ọkụ ma nọ n'ọnọdụ dị elu na-eguzogide, na-eme ka sekit dị na steeti "gbanyụọ", si otú ahụ na-echebe sekit site na mmebi.Mgbe ewepụsịrị mmejọ ahụ, thermistor PTC maka nchekwa oke ibu ga-alaghachi na steeti nguzogide dị ala, sekit ahụ maliteghachi ọrụ nkịtị.

3. Nchekwa oke ọkụ PTC thermistor

Okpomọkụ Curie nke ihe mmetụta thermistor PTC sitere na 40 ruo 300 Celsius. Na njiri mara RT nke PTC thermistor sensor, steepụ ịrị elu nke uru nguzogide mgbe ịbanye na mpaghara mgbanwe nwere ike iji mee ihe dị ka okpomọkụ, ọkwa mmiri mmiri, na nghọta mmiri. ngwa. Dị ka àgwà ndị nwere mmetụta okpomọkụ nke PTC thermistors si dị, a na-eme ya ka e jiri ya mee ihe na nchebe okpomọkụ na oge mmetụta okpomọkụ, a na-ejikwa ya na-agbanwe ọkụ eletrik, ngwa eletriki (moto, transformers), ngwaọrụ ike (transistors). A na-eji obere nha na oge nzaghachi ngwa ngwa mara ya. , Ọ dị mfe iji wụnye.

Ọdịiche dị n'etiti PTC na KTY:Siemens na-eji KTY

Nke mbụ, ha bụ ụdị ngwaọrụ nchebe okpomọkụ moto;

PTC bụ nguzogide na ọnụọgụ okpomọkụ dị mma, ya bụ, uru nkwụsị na-abawanye ka okpomọkụ na-ebili;

Ihe ọzọ bụ na NTC bụ onye na-agbanwe agbanwe na ọnụọgụ okpomọkụ na-adịghị mma, na ọnụ ahịa nkwụsị na-ebelata ka okpomọkụ na-ebili, ma ejighị ya maka nchebe moto izugbe.KTY nwere oke nkenke, ntụkwasị obi dị elu yana nkwụsi ike siri ike.A na-ejikarị eme ihe n'ọhịa nke nha okpomọkụ.A na-eji ihe mkpuchi silicon dioxide kpuchie KTY, a na-emeghe oghere ígwè nke nwere dayameta nke 20mm n'elu mkpuchi mkpuchi ahụ, a na-emezikwa oyi akwa niile nke ala.A na-enweta nkesa nke ugbu a nke a na-agbanye site n'elu ruo na ala site na nhazi nke kristal, ya mere a na-akpọ ya nkwụsị mgbasa.KTY nwere ọnụọgụ ọnụọgụ ọnụọgụ ọnụọgụ dị n'ahịrị n'ofe oke nha okpomọkụ niile, si otú a na-ahụ na nha nha okpomọkụ dị elu.

A na-emepụta ma mepụta PT100 platinum thermal resistance site na iji ụkpụrụ bụ isi na uru nguzogide nke waya platinum na-agbanwe na mgbanwe okpomọkụ. ) na 100 ohms (nọmba ngụsị akwụkwọ bụ Pt100), wdg, okpomọkụ nha nso bụ -200 ~ 850 ℃. Ihe na-ahụ maka ọnọdụ okpomọkụ nke 10 ohm platinum thermal resistance bụ nke waya platinum kariri, na arụmọrụ nguzogide okpomọkụ dị oke mma. 100 ohm platinum thermal eguzogide, ọ bụrụhaala na ọ na-eji na okpomọkụ mpaghara n'elu 650 ℃: 100 ohm platinum thermal eguzogide bụ tumadi na-eji na okpomọkụ mpaghara n'okpuru 650 ℃, ọ bụ ezie na ọ nwekwara ike-eji na okpomọkụ mpaghara n'elu 650 ℃. mana na mpaghara okpomọkụ n'elu 650 ℃ Klas A adịghị anabata njehie. Mkpebi nke 100 ohm platinum thermal resistance bụ ugboro 10 karịa nke 10 ohm platinum thermal resistance, na ihe ndị a chọrọ maka ngwa nke abụọ bụ usoro nke ịdị ukwuu. Ya mere, a ga-eji 100 ohm platinum thermal resistance mee ihe dị ka o kwere mee maka nha okpomọkụ na mpaghara okpomọkụ dị n'okpuru 650 °C.