1. Indlela Enembile Yokulinganisa Yombuso Oguqukile
Kwabaphikisi abangahleliwe, ukutholwa kwabo akuyona nje ikhono eliyisisekelo ekunakekelweni ngogesi, kepha futhi kunesinyathelo esingukhiye sokuqinisekisa ukusebenza okujwayelekile kwesifunda.Okokuqala, lapho usebenzisa i-multimeter ukukala ukumelana, indlela efanele yokusebenza ukuxhuma izingxoxo ezimbili zokuhlola kuzo zombili iziphetho ze-resistor.Ngale nqubo, ama-pormatic alungile futhi angemuhle amacala awathinti imiphumela yokulinganisa.Ukuze uthuthukise ukunemba kokulinganisa, kubalulekile ukukhetha ibanga elifanele.Inani eliphakeme le-Resistor kufanele liqondise ukukhethwa kobubanzi ukuze kuqinisekiswe ukuthi i-pointer yokulinganisa iwela phakathi kobubanzi, okungukuthi, phakathi kwama-20% kanye nama-80% engxenye epheleleye-ohm stop ukunciphisa amaphutha wokufunda..
Uhla lwephutha oluvumelekile lokuhlukahluka kokuhlukahluka ngokuya ngezinga layo lokunemba, okungu-5%, ± 10%, kanye ± 20%.Lokhu kusho ukuthi lapho kuthathwa isilinganiso, ukuphambuka phakathi kwenani elinganisiwe kanye nenani eliphakeme le-resistor kufanele libe ngaphakathi kwalolu banga.Izilinganiso ezingaphandle kwaleli banga zingakhombisa ukuthi ukumelana sekushintshile futhi akusekho okuhlangabezana nokucaciswa kwalo kwasekuqaleni.
Ekusebenzeni kwangempela, eminye imininingwane idinga ukunakwa ukuze kuqinisekiswe ukunemba kokulinganisa.Isibonelo, lapho ulinganisa amanani aphezulu wokumelana (ngaphezulu kwamashumi aphezulu we-kω), gwema ukuthinta uphenyo lokuhlola kanye nengxenye ye-resistor ngqo ngezandla zakho ukuvikela ukumelana nomzimba womuntu ekuthinteni imiphumela yokulinganisa.Ngaphezu kwalokho, ngaphambi kokukalwa, umphikisi kufanele athengiswe ebhodini lesekethe kanti okungenani isiphetho esisodwa esinqunyelwe ukugwema ukuphazanyiswa kwezinye izingxenye esifundeni.
2. Isu Lokuthola Ukumelana nosimende
Ngenxa yesakhiwo sayo esikhethekile nezinto zokwakha, abamelana nosimende basetshenziswa kabanzi ezimweni ezidinga ukufelwa kwamandla aphezulu.Indlela yokuthola ukumelana nosimende empeleni ifana neyokumelana okujwayelekile okuhleliwe.Lokhu kugcizelela ukuguquguquka kwamasu wokulwa nokumelana okuyisisekelo futhi kukhumbuze abahlinzeki ukuthi bangasebenzisa izimiso eziyisisekelo eziyisisekelo zokuxazulula inkinga lapho bebhekene nezinhlobo ezahlukene zokumelana.
3. Ubuchwepheshe bokuxilonga abamelana naleso
Njengengxenye yokuvikela ukuphepha, ukumelana kwe-fuse kungaxhuma ngokuzenzakalelayo lapho umjikelezo ugcwele ukugwema umonakalo omkhulu.Lapho ingaphezulu komphikisi we-fuse livela mnyama noma lishibhile, kuvame ukusho ukuthi ukugeleza kwamanje okudlula kude kudlula inani elikalwe.Ngakolunye uhlangothi, uma ukumelana kwe-fuse akubonisi umkhondo ebusweni bayo kepha kuvuliwe, lokhu kungakhombisa ukuthi okwamanje kuphakeme kancane kunesilinganiso sayo se-fuseIsikali se-R Multimeter iyithuluzi eliphumelelayo lokwahlulela ikhwalithi yokumelana ne-fuse.Lapho kulinganiswa, omunye umkhawulo wokumelana kwe-fuse kufanele kunqanyulwe kwisekethe.Uma inani lokumelana lingapheli, kukhombisa ukuthi ukumelana kwe-fuse kwehlulekile.Ngaphezu kwalokho, ngesikhathi sokulungiswa kwangempela, kwesinye isikhathi kutholakala ukuthi ukumelana ne-fuse kudilikile futhi kunciphise, okudingeka kubhekwe nakho ngesikhathi sokuhlolwa.
4. Ukutholwa nokuhlaziywa kwama-potentiometer
Njengomzabalazo ojwayelekile oguquguqukayo, ukusebenza kwe-Potentiometer kuthinta ngqo umsebenzi wokulungiswa komjikelezo.Isinyathelo sokuqala sokuhlola i-Potentiometer ukubheka ukuthi ukujikeleza kwefingo kubushelelezi nokuthi ngabe ukusebenza kokushintsha kuyashintsha.Ngaphezu kwalokho, umsindo okhiqizwa lapho kusetshenzwa kusetshenziswa futhi kuyindlela yokuqamba ikhwalithi yayo.Lapho usebenzisa i-multimeter ukukala ukumelana, kufanele ukhethe uhla olufanele ngokususelwa ekumelaneni kwe-potentiometer, bese uqinisekisa ukuthi iyahambisana nenani eliphakeme ngokulinganisa ukumelana nazo zombili iziphetho.Ukujikeleza kwe-Shaft ye-Potentiometer kufanele kube bushelelezi, futhi inani lokumelana kufanele lishintshe ngokuqhubekayo ngesikhathi sokujikeleza ngaphandle kokugxuma.Uma ukuxhumana okumpofu kwangaphakathi kwe-Potentiometer kutholakala ngesikhathi sokuhlolwa, i-potentiometer kufanele ibhekwe njengolimele.