1. Resistivity - tseem hu ua kuj tseem ceeb los yog tej yam kuj. Tsawg-voltage tis txee ntsuas tam sim no yog AC 50Hz, ntsuas qhov hluav taws xob 380v kev faib khoom raws li lub zog, teeb pom kev zoo thiab kev faib hluav taws xob hloov pauv thiab tswj lub hom phiaj. Lub thawv ' meter ' yog siv los tsim cov khoom siv hluav taws xob uas tsis tshua muaj hluav taws xob cable ceg lub cev cov khoom siv yog cov khoom siv sib xyaw ua ke. Lub ntsiab muaj pes tsawg leeg ntawm lub thawv yog muab faib ua ABS engineering yas, polycarbonate pob tshab PC khoom, DMC, SMC plaub yam khoom txhaj tshuaj molding, nias. Cov khoom sib xyaw no muaj ob ntu: matrix - polyester cob; cov khoom siv txhawb zog (hu ua PC, SMC), yog li nws tseem hu ua cov khoom siv pob tshab, cov khoom siv fiber ntau polyester. Cable ceg kem Nrog txoj kev loj hlob ntawm cov txheej txheem cableization ntawm cov khoom xa tawm, thaum cov khoom xa tawm ywj siab nrog lub peev xwm me me yog qhov muaj zog ntau dua, lub thawv cable tuaj yeem siv rau kev sib txuas ntawm ntau ceg ntawm lub cable, vim tias lub thawv ceg tsis tuaj yeem yuav tsum tau ua ncaj qha rau txhua txoj kev, tsuas yog siv los ua ib txoj hlua cable, lub luag haujlwm tseem ceeb ntawm lub thawv cable yog coj mus rhaub lossis hloov lub cable. Nws yog lub cev kom muaj nuj nqis uas ntsuas qhov hluav taws xob conductivity ntawm cov khoom thiab qhia nyob rau hauv cov ntawv nyob rau hauv units ntawm ohm * mmm2 / m. Piv txwv li, nws yog sib npaug rau tus nqi kuj ntawm tus neeg xyuas pib ua los ntawm cov khoom siv nrog qhov ntev ntawm 1 m, qhov chaw hla ntawm 1 square millimeter thiab qhov kub ntawm 20 degrees Celsius. Qhov siab dua qhov resistivity, qhov qis conductivity. Tus nqi no yog sib npaug rau qhov sib piv ntawm qhov nce hauv qhov kev tiv thaiv ntawm qhov kub nce ntawm 1C mus rau qhov qub resistivity, feem ntau qhia raws li tsab ntawv hauv units ntawm 1cc.
2. Temperature coefficient of resistance - lub cev muaj nuj nqis uas qhia txog kev hloov pauv ntawm cov khoom siv nrog qhov kub thiab txias. Tus nqi no yog sib npaug rau qhov sib piv ntawm qhov kev tiv thaiv rau qhov qub resistivity rau txhua txhua 1 degree c nce nyob rau hauv qhov kub thiab txias, feem ntau denoted los ntawm tsab ntawv, nws yog 1 / c.
3. Conductivity - Lub peev xwm ntawm ib yam khoom los ua hluav taws xob tam sim no hu ua conductivity. Nyob rau hauv DC circuits, tus nqi conductivity yog reciprocal ntawm tus nqi kuj thiab yog sawv cev los ntawm tsab ntawv π hauv ohms.
4. Conductivity ---- kuj hu ua hluav taws xob conductivity coefficient ntawm kev hloov, kuj tseem tuaj yeem ntsuas cov khoom lag luam muaj hluav taws xob conductivity zoo lossis tsis zoo rau lub cev tseem ceeb. Qhov loj ntawm cov lej yog qhov hloov pauv ntawm qhov kev tiv thaiv, rau cov ntaub ntawv los qhia lawv tus kheej kev ua tau zoo, chav tsev yog m / ohm * mm square.
5. Hluav taws xob muaj peev xwm ---- Circuit Court vim yog lwm qhov xwm txheej ntawm lub zog hloov pauv rau lub zog hluav taws xob los ntawm qhov sib txawv, hu ua qhov teeb meem hluav taws xob muaj peev xwm lossis lub tuam txhab hu ua lub peev xwm. Qhia koj tus kheej nrog tsab ntawv E qhia tias chav tsev yog volts.
6. Tus kheej induction ---- thaum tam sim no nyob rau hauv lub kaw Circuit Court hloov, ces lub Circuit Court tsim ib tug tam sim no los ntawm nws tus kheej flux kuj hloov, yog li nyob rau hauv lub Circuit Court kuj yuav hnov lub zog hluav taws xob, lub cim no yog hu ua self-induced. daim duab, qhov induction electromotive quab yuam yog hu ua self-induced electromotive force.
7. Mutual induction: Yog tias ob lub coils nyob ze rau ib leeg, ib feem ntawm cov flux uas ua los ntawm cov tam sim no hauv thawj kauj yog txuas nrog lub kauj thib ob. Thaum tam sim no nyob rau hauv thawj kauj hloov, lub flux nyob rau hauv cov saw ntawm loops ntawm thawj thiab thib ob coils kuj hloov, ua ib tug induced electromotive quab yuam nyob rau hauv lub thib ob kauj. Lub cim no hu ua lub cim kev sib nrig sib inductance.
8. Inductance - ib lo lus dav dav rau tus kheej thiab kev sib nrig sib inductance.
9. Inductance - Thaum AC tam sim no ntws los ntawm ib lub voj voog nrog ib qho inductor, lub inductor muaj qhov cuam tshuam ntawm kev nres qhov ntws ntawm AC tam sim no. Qhov kev ua haujlwm no yog hu ua inductive reactance thiab tau tshwm sim los ntawm Lx, Lx=2fL.
10. Capacitive resistance ---- AC system ntws los ntawm ib lub voj voog uas muaj peev xwm sib txawv, lub peev xwm muaj peev xwm tiv thaiv kev ua haujlwm ntawm AC tam sim no dhau, qhov haujlwm no yog hu ua capacitive resistance, qhia nws tus kheej los ntawm Cx, Cx {{2} }/12 fc.
11. pulsating tam sim no - qhov tam sim no nws loj hloov nrog lub sij hawm thiab nws cov kev taw qhia tseem tsis hloov yog hu ua pulsating tam sim no.
12. Lub amplitude yog thaum lub sij hawm tus nqi siab tshaj plaws hu ua amplitude ---- tam sim no.
13. Tus nqi nruab nrab - Qhov nruab nrab tus nqi ntawm AC yog qhov piv ntawm tag nrho cov nqi ntws los ntawm ib lub voj voog ntawm ib lub sijhawm rau lub sijhawm ntawd. Qhov nruab nrab tus nqi ntawm qhov ntau sinusoidal feem ntau yog qhov nruab nrab tus nqi tshaj li ib nrab ntawm ib lub lim tiam thiab muaj feem xyuam rau tus nqi amplitude: tus nqi nruab nrab=0.637* amplitude tus nqi.
