Cov kab xev xaim yog ib qho khoom siv thoob plaws tsim rau ntau cov kev ntsuas: voltage, tsis kam, tam sim no, txawm tias qhov kev ntsuas hlau tsis yooj yim tshaj plaws. Nrog nws, koj tuaj yeem txawm ntsuas qhov haum ntawm lub roj teeb.
Cov Lus Qhia
Kauj ruam 1
Kev txiav txim siab yog tias koj multimeter muaj lub diode kuaj ua haujlwm, yog li, tom qab ntawd txuas cov kev ntsuas, cov diode yuav lub suab hauv ib qho kev taw qhia, thiab tsis yog nyob rau lwm qhov. Yog tias txoj haujlwm no tsis muaj, teeb tsa multimeter hloov mus rau 1kΩ, xaiv cov ua hauj kev ntsuas kev ua haujlwm. Kuaj cov diode. Thaum koj txuas cov xim liab ntawm multimeter rau ntawm qhov hluav taws xob ntawm lub diode thiab cov dub ua rau lub cathode, saib nws cov pem hauv ntej tsis kam.
Kauj ruam 2
Kos cov lus xaus txog lub xeev ntawm lub diode thaum kev sib txuas rov qab. Ntawm qhov kev txwv tam sim no, qhov kev tawm tsam yuav tsum siab kom koj yuav tsis pom dab tsi. Yog tias siv cov diode punctured, nws cov kev tawm tsam hauv txhua qhov kev taw qhia yuav xoom, thiab yog tias nws txiav tawm, ces cov tsis kam yuav txiav tawm ntawm tus nqi loj kawg nyob rau hauv txhua qhov kev coj.
Kauj ruam 3
Kuaj cov diode nrog cov multimeter. Qhov no tuaj yeem ua tiav los ntawm kev txuas cov ncej tsis zoo thiab qhov zoo ntawm ohmmeter, ua ntej teem nws rau ntawm rab teev Rx100, feem, mus rau qhov tsis zoo (cathode) thiab qhov zoo (anode) cov ntsiab lus ntawm cov diode. Qhov tshwm sim ntawm kev ntsuas tsis kam yuav tsum yog tsib puas rau rau pua ohms, yog tias cov diodes yog qhov zoo tib yam (silicon), lossis los ntawm 200 txog 300 ohms, yog tias lawv yog germanium. Yog tias cov diodes kho qhov tseeb, ces lawv cov kev tawm tsam yuav qis dua li niaj zaus vim lawv qhov loj me. Nrog rau hom no, koj tuaj yeem txiav txim siab sai sai ntawm kev noj qab haus huv ntawm diode.
Kauj ruam 4
Hloov ntawm diode ohmmeter rau kev xau lossis luv Circuit Court mus rau qhov siab impedance, hloov lub diode ua. Yog tias muaj xaim hluav taws xob tsawg lossis luv luv Circuit Court, qhov thev yuav tsawg. Rau germanium diodes, nws tuaj yeem muaj li 100 kilo-ohms txog 1 mega-ohm. Rau silicon diodes, tus nqi no tuaj yeem ncav ntau txhiab megohms. Thov nco ntsoov tias rectifier diodes muaj ntau dua cov dej xau hluav taws xob tam sim no. Thiab qee qhov diodes tuaj yeem muaj qhov rov qab poob qis dua, tab sis yuav ua haujlwm zoo hauv qee qhov kev ua haujlwm.
