Yuav ua li cas thiaj txiav txim siab qhov zoo ntawm cov khoom siv nrog tus multimeter
1. Nrhiav kom meej ntawm dog dig
Ntsuas nrog MF47 multidimeter, txuas cov liab thiab dub probes rau ob qho kawg ntawm Diode, nyeem nyeem ntawv, thiab tom qab ntawd sib pauv cov kev sim ua ntsuas. Raws li cov txiaj ntsig ntawm ob ntsuas, rau cov nqi tiv thaiv ntawm cov khoom siv hluav taws xob qis ntawm cov khoom siv hluav taws xob tsawg}, thaum ntawm silicon donges yog li 1k ω lossis ntau dua. Rov qab los tiv thaiv cov raj German yog ob peb lub raj ntawm cov raj dej tsis zoo, thiab cov roj ntawm cov khoom siab high-zog diode yog ntau me dua). Ib qho zoo diode resistance thiab lub siab rov qab tiv, thiab ntau dua qhov sib txawv hauv ntej thiab thim rov qab, qhov zoo dua. Yog tias ntsuas cov kev ntsuas mus rau pem hauv ntej thiab rov qab tsawg thiab kaw rau xoom, nws qhia tau tias cov diode yog luv hluav taws xob; Yog tias rau pem hauv ntej thiab thim rov qab yog siab heev lossis nyhav rau infinity, nws qhia tau tias muaj ib qho qhib Circuit Court sab hauv lub raj. Hauv ob qho xwm txheej no, cov diode xav tau muab txhuam.
Ntawm kev kuaj mob: Kuaj rau pem hauv ntej thiab thim rov qab ntawm diode PN Junction kam ua kom yooj yim los txiav txim siab seb puas muaj qhov teeb meem luv luv lossis kev qhib Circuit Court lossis qhib Circuit Court.
2. PN Kev Tshawb Nrhiav Kev Tawm Tsam
Teeb cov digital multiva rau diode hom thiab ntsuas lub pn kev sib tshuam nrog kev sojntsuam. Yog tias nws tau ua rau hauv cov kev coj ua ntej, tus lej nthuav tawm yog cov Volfage rau pem hauv ntej poob ntawm pn hlws ris. Ua ntej, txiav txim siab cov neeg sau thiab emitter Electrodes; Ntsuas cov voltage rau pem hauv ntej poob ntawm ob qho kev sojntsuam nrog kev sojntsuam, qhov twg cov emitter muaj qhov ntau dua voltage poob thiab tus sau muaj qis dua voltage poob. Thaum kuaj ob lub junctions, yog tias qhov kev sojntsuam liab tau txuas nrog tus pasthat, kev sim typetor yog ntawm NPN kev sojntsuam, thiab kev sojntsuam liab tau txuas nrog lub hauv paus b; Yog tias qhov kev sojntsuam dub yog txuas nrog lub davhlau ya nyob twg, tom qab ntawd kev sim transistor yog ntawm PNP hom thiab lub davhlau ya nyob twg yog lub hauv paus b. Tom qab lub transistor raug puas, muaj ob qho xwm txheej rau lub pn kev sib tshuam: Circuit Court thiab qhib Circuit Court.
Hauv kev kuaj Circuit Court: Hauv Circuitor sim ntawm lub transistor tau ua tiav los ntawm kev sim ua PN kev sib tshuam los txiav txim siab seb puas muaj qhov tshwj xeeb raug puas tsuaj. Cov ceg tsis kam yog ntau dua li qhov ua kom dhau los ntawm PN hlws ris. Feem ntau, yuav tsum muaj qhov sib txawv tseem ceeb hauv kev ntsuas mus rau pem hauv ntej thiab thim rov qab, txwv tsis pub lub PN hlws yuav raug puas. Thaum cov ceg ua kom tsis tshua muaj tsawg dua li kev tawm tsam ib lub PN kev sib tshuam, cov ceg yuav tsum tau txiav tawm, txwv tsis pub muaj qhov tsis zoo.
3. Peb theem Rectifier Choj Module nrhiav kom tau
Noj Semikron Revifier Choj Module ua piv txwv, raws li qhia hauv daim duab txuas nrog. Teeb cov digital multiat rau ntawm Diode Testimeter los ntsuas rau hauv qab no thiab cov ncej liab 2 thiab 1, txheeb xyuas, txhawm rau txiav txim siab seb puas yog tus choj rectifier yog lawm. Qhov ntau dua qhov sib txawv ntawm kev ntsuas zoo thiab tsis zoo, zoo dua qub; Yog tias xa mus rau pem hauv ntej thiab thim rov qab yog xoom, nws qhia tau tias cov theem tau kuaj tau raug tawg thiab luv hluav taws xob; Yog tias ob qho tib si rau pem hauv ntej thiab thim rov qab yog ib txhis, nws qhia tau tias cov theem tau kuaj tau raug txiav tawm. Yog tias ib theem ntawm lub rectifier choj module raug puas tsuaj, nws yuav tsum tau hloov.
4. Inverter igbt module nrhiav
Teeb cov digital multiatation rau ntawm Diode Testive hom thiab sim rau pem hauv ntej thiab rov qab Diode cov yam ntxwv ntawm igbt modules C1. E1 thiab C2. E2, nrog rau ntawm GATE G thiab E1, E2, los txiav txim siab yog tias lub IGBT module yog lawm.
