Cov ntaub ntawv thiab kev faib tawm ntawm wirewonound resistors

Wirewound Distors, tseem hu ua cov tshuaj tiv thaiv kab hlau ua rau cov tshuaj nplaum hlau, yog cov feem ntau siv cov khoom lag luam uas nquag siv hauv cov khoom siv fais fab. Qhov txheej txheem tsim kev tsim qauv yog los cua lub raj Resistor ntawm Alumina Ceramic pas nrig-puab substrate lossis lwm yam insulating. Cov hlau resistor yog cov khoom siv xws li Nickel-chromium lossis manganese-tooj ​​liab. Ob qhov kawg ntawm cov hlau resistor txuas nrog rau cov taw kev sib txuas, thiab cov hlau sab nraud ntawm cov ntaub lag luam tiv thaiv sib txawv.
Wirewound resors muaj cov yam ntxwv ntawm lub zog siab, kev ua haujlwm kub, thiab cov suab nrov tsawg.
Khoom siv:
1) insulating substrate: wirewound resistors feem ntau siv alumina ceramic substrate raws li insulator. Cov khoom siv hluav taws xob qis feem ntau siv cov pas nrig ceramic ceramic, thiab high-zog insulating cov pas nrig tsis siv hluav taws xob. Qhov zoo sib txawv ntawm tus pas nrig lub cev yuav muaj qhov cuam tshuam loj heev rau ntawm cov cua sov dissipation thiab cov khoom siv hluav taws xob ntawm lub resistor. Nyob rau hauv kev sib piv, cov chaw tsim khoom txawv teb chaws feem ntau siv me ntsis grey ceramic tsho, thaum Shenzhen Shida Technology feem ntau siv cov kab sib cav sib ceg. Lub raj raj iav raj yog sib zog me ntsis, thiab lub raj raj dawb muaj zog thiab muaj qhov ntawj ntom.
Low-hawj dej muaj zog ceramic muaj cov kev co ua kom muaj zog thiab cuam tshuam tau zoo thaum lub sij hawm sintering. Lub Hollow Ceramic Tube siv rau lub zog siab yog qhov yooj yim tawg thaum lub nkoj thauj mus los, thiab cov tsis zoo ua rau tawg thaum lub sij hawm resistor Sintering txheej txheem. Qee lub sij hawm sab hauv cracks tshwm sim los ntawm lub zog siab-fais fab ceramic raj window winding thaum lub qhov muag liab qab. Thaum lub tshuab muab tso rau hauv kev ua haujlwm ntev ntev, tawg yog yuav tshwm sim. Yog li ntawd, peb ntawm Shida Technology ib txwm siv cov kab ke sib xyaw ua ke hauv cov txheej txheem xaiv ntawm cov txheej txheem ceramic kom ntseeg tau, tus yam ntxwv siab-kub thiab ruaj khov.
2) Tus Reseor hlau: Qhov txawv ntawm resistor hlau ncaj qha txiav txim siab qhov kub thiab txias thiab tseem cuam tshuam rau lub sijhawm luv luv thiab ntev ntev ntawm lub resistor. Nickel-chromium alloy yog feem ntau siv xaim xaim, tab sis cov khoom lag luam zoo tshaj plaws sib txawv, thiab muaj pes tsawg tus neeg hlau sib txawv, thiab muaj pes tsawg leeg ntawm cov kab hauv ib qho hauv alloy kuj txawv. Cov hlau zoo heev muaj kev hloov pauv me me hauv cov hluav taws xob thaum lub siab sintering, thiab qhov zoo yog ruaj khov. Cov kev tawm tsam ntau tau los ntawm cov qib winding sib txawv ntawm xaim rau tib lub matrix sib txawv heev. Hauv kev sib piv, cov tuam ntxhab txawv teb chaws tuaj yeem ua kom tau ntau pua ntawm k ohms lossis txawm tias wkh houm, thaum lub sij hawm tsis kam ntawm peb cov chaw tsim khoom hauv tsev yog txhua qhov qis dua 100k. Nyob rau hauv teb rau cov xwm txheej no, peb lub tuam txhab nquag hu rau cov tuam txhab txawv teb chaws
3) Ntim Khoom: Feem ntau muaj yim hom insulating varnish, silicone cob, ci, sib xyaw, canded, ceramics, thiab txhuas plhaub.
Insulating vanish yog cov khoom siv lag luam ntim ntau tshaj plaws, thiab cov txheej txheem yooj yim. Nws tsuas yog xav tau thov rau substrate ntawm lub qhov txhab tiv thaiv hlau thiab qhuav ntawm qhov kub tsawg. Rwb thaiv tsev rwb thaiv tsev yog dav dav, thiab cov cua sov dissipation cuam tshuam nrog insulating varnish yog feem ntau tsis haum rau kev siv kub thiab siab ntseeg tau.
Ntim khoom siv silicone silicone tau muab faib ua ke rau hauv cov khaub ncaws silicone thiab kub-ntsuas silicone resin. Feem ntau precision hlau-cov kab mob tsim tau encapsulated nrog silicone cob qhia, yog li cov hluav taws xob cov khoom siv hluav taws xob yuav tsis cuam tshuam los ntawm cov hluav taws xob cua sov. Qhov nyiaj ntau tshaj plaws ntawm kev kub siab silicone envapsulated wirewound resistors yog feem ntau 175 degree, thiab qhov siab tshaj plaws tuaj yeem ncav cuag 275 degree.
Lub glazed encapsulation daim ntawv xav tau sintered ntawm qhov kub, thiab kev ua haujlwm siab tshaj plaws tuaj yeem ncav cuag 345 degree. Tom qab lub resistor yog qhov txhab, nws yog coated, nws yog coated, hmoov nrog rau saum npoo tom qab sinining, thiab ces sintered nyob rau hauv ib sintering rauv. Vim yog cov txheej txheem nyuaj, cov sintering kub yog siab li 750-800 qhov tseeb ntawm cov glazed reawor tuaj yeem feem ntau tsuas yog 5%. Hom kev tiv thaiv no yog qhov haum rau kev ua haujlwm puv puv-kev thauj khoom kub-ntsuas kub. Tom qab tua hluav taws, xim ntawm lub glaze yog feem ntau ntsuab thiab xim av. Cov neeg txawv teb chaws feem ntau yog xim av, thiab cov hauv tsev feem ntau yog xim ntsuab.
Insulating txheej tseem yog cov khoom ntim ntim nrog cov txheej txheem yooj yim. Tom qab encapsulation, cov cua sov dissipation kev ua tau zoo ntawm lub resistor yog qhov yooj yim rau tev muaj qhov yooj yim rau kev siv hauv cov khoom siv co-co-kev co. Ib nrab ntawm cov wirewound resistors uas siv cov txheej txheem insulating yog cov hluav taws kub siab-hluav taws xob tiv thaiv.
Lub wirewound defors encapsulated nrog cov khoom siv sib xyaw muaj kev ua tau zoo, thiab tus nqi yog ntawm cov pleev xim cov khoom siv thiab cov khoom siv tawm hws. Cov saum npoo ntawm pob yog qhov tsis ncaj, tab sis nws tsis cuam tshuam rau kev ua tau zoo. Feem ntau, lub zog ntawm wirewound resistors nrog cov khoom sib xyaw yog tsawg dua 10w. Cov khoom lag luam encapsulation yog qhov tsawg dua hauv Suav teb. Tam sim no, cov khoom siv no hauv peb lub tuam txhab kuj tseem nyob hauv kev sim ntau lawm theem.
Yas encapsulation feem ntau yog rau smd wirewound resistors thiab tsawg-tiv thaiv kab hlau tiv thaiv kabke. Lub qhov txhab substrate yog encapsulated nyob rau hauv ib tug moulded yas plhaub. Nws qhov siab tshaj plaws ua haujlwm tau ncav cuag 175 degree. Kev ua haujlwm siab kub yuav tsis ua rau peeting, tab sis cov cua sov dissipation kev ua tau yog dav dav. Lub zog ntawm cov yas-encapsulated wirewound resistors feem ntau qis dua 10W.
Wirewound deforsors encapiculated nrog ceramics feem ntau yog hu ua xis mas desors hauv Suav teb. Hom kev tiv thaiv no muaj lub khauj khaum sib xyaw ua ntej. Lub qhov txhab substrate yog muab tso rau hauv lub plhaub, thiab tom qab ntawd cov khoom siv insulating yog hliv ntawm ib sab. Hom kev tiv thaiv no muaj cov cua sov disspation kev ua tau zoo thiab yog nyiaj txiag, tab sis nws yog qhov loj me, thiab tsis haum rau kev ntseeg tau.
Wirewound defortors engapsulated nrog aluminium plhaub yog muaj ntau hnub no. Cov cua sov dissipation muaj peev xwm ntawm aluminium plhaub yog super muaj zog, yog li lawv feem ntau haum rau cov kev siv hluav taws xob siab. Ib co aluminium plhaub tshav kub kub rhuav tshem tau kuj tseem ua ke nrog dej txias rau cov cua sov dissipate.
Qee qhov high-zog wirewound deforors siv cov hlau hlau tiaj tus neeg mob rau ntawm cov ceramic substrate. Txhawm rau pab txhawb cov cua sov dissipation, lawv tsis tau ntim. Xws kev tiv thaiv feem ntau siv raws li cov nres tsis kam thiab cov neeg tawm tsam siab. Cov kev tawm tsam feem ntau tsawg thiab lub zog feem ntau dua 500W.
Qhov saum toj no yog kev txheeb xyuas yooj yim ntawm cov ntaub ntawv ntawm txhua feem ntawm wirewound resistor. Lub ntsej muag wirewound zoo meej yuav tsum tau ua raws li cov hlau zoo, cov hlau zoo thiab cov txheej txheem sib luag zoo.