Kev tsom xam ntawm kev sib raug zoo ntawm resistor ua haujlwm kub thiab hluav taws xob (2)

Kev sib raug zoo ntawm kev tiv thaiv qhov ntsuas thiab lub sijhawm

Los ntawm cov kev xav ntawm cov cua sov, cov tsim tawm tuaj yeem faib ua haujlwm thiab nquag. The active part is the direct heating part - the resistance wire, and the passive part is the heated part - the substrate, filler, protective layer, lead wire, etc. Under the rated power load, the heat generated by the active part is timely transferred to the passive part, so that the temperature of the two parts tends to balance, but the temperature gradually rises to a stable value to achieve normal operation. Qhov passive ib feem yog suav tias yog qhov kub tas li kub, thiab qhov nquag feem ua rau cov cua sov ua kom sov, uas zoo ib yam li cov cua sov dissipation ntawm lub resistor rau ib puag ncig ib puag ncig nyob rau hauv ib puag ncig puag ncig hauv ib puag ncig.

Txuas ntxiv hluav taws xob hluav taws xob tas li, nws tuaj yeem yog DC lossis AC, tab sis tsis pulsed. Thaum lub resistor tsuas yog raug hluav taws xob hluav taws xob, qhov kub ntawm lub cev tiv taus lub cev yog tib yam li qhov kub thiab txias. Lub sijhawm no, feem ntau ntawm lub zog hluav taws xob yog siv los ua kom sov lub cev tiv taus lub cev, thiab cov cua sov dissipation zog yog me me. Raws li qhov ntsuas kub ntawm lub resistor maj mam nce, cov cua sov dissipation zog maj mam nce. Thaum lub zog kub dissipation yog sib npaug rau hluav taws xob hluav taws xob, lub cev resistor tsis kub, thiab lub xeev ruaj khov nyob rau lub sijhawm no.

Raws li muaj nyob hauv daim duab hauv qab no: tab sis thaum lub resistor ua haujlwm nyob rau hauv lub sij hawm txuas ntxiv rau lub sij hawm ntawm lub sij hawm tso cai rau lub sij hawm roilerbed los ntawm lub zog tiv thaiv los ntawm lub cev tiv thaiv kom sov rau txhua 1 degree nce hauv qhov kub.