[Marco] Yarebye kuri metero nyinshi.Icyakora, atekereza ko HP3458A aribyiza, nubwo byatangijwe hashize imyaka irenga 30 mumwaka wa 1989. Umuntu yatanze imwe kuri [Marco], ariko yerekanaga ubutumwa bwamakosa kandi yerekana imyitwarire idahwitse igihe yatangiraga, bityo akeneye gusanwa.
Dukurikije [Marco], kode yamakosa yerekana ikibazo kijyanye n’imisozi myinshi igereranya-kuri-digitale, aribyo bituma metero idasanzwe.Imetero ifite imibare 8.5, bityo icyiciro gisanzwe cyo guhindura ntikizagabanya.
Amakuru meza kuri iki kibazo nuko aduha urwitwazo rwo kureba imbere mu gasanduku.Buri kibanza cyimbere imbere gisa nkicyoroshye nkibikoresho bigezweho bya PC.Muri uru rwego rwukuri, ikibaho cyumuzunguruko gitwikiriwe numuyoboro wihariye wo gukora cyane.
Uburyo busanzwe bwo guhindura voltage kumubare ikoresha igihe gisabwa cyo kwishyuza no gusohora capacitor, kandi igihe gikenewe cyerekana voltage.Imetero ikoresha uburyo bwinshi bushoboka bwo guhangana n’imisozi, [Marco] isobanura uburyo metero ikoresha ahantu hihuta kandi hatagaragara neza kugirango ibone gusoma neza, hanyuma ikoresha ahantu hatinze kandi neza kugirango itunganyirize imibare yo hasi.
Chip yihariye ifite IC hamwe numuyoboro wigenga urwanya.Niba binaniwe, metero ntishoboka gusanwa utiriwe ujya muri serivise ya ruganda kugura ikibaho gishya cyumuzingi kumadorari 3000.Chip yihariye isa nkaho ikora neza, kandi gusimbuza ikigereranyo kizwiho kunanirwa ntabwo bifasha.
Ni iki gikurikiraho?Gura ibice byose ushobora kubona kubibaho byumuzunguruko (hafi $ 100), hanyuma usimbuze ibice byose.Dukunda uburyo bwe bwo gukuraho ibice bitagira ingano biganisha mugihe cyo kwiyubaka.Ubwa mbere, ibi byasaga naho bishoboka, ariko kwikuramo birananirana.Birasa nkaho gakondo IC ishobora kuba yaracitse, nuko yaje gusimbuza ikibaho cyose.
Ibi byakuyeho ikosa rikomeye, ariko ibipimo bimwe na bimwe byari bigifite ibibazo, bituma ikindi kibaho gisanwa.Umuzunguruko uvugwa ukora RMS ihinduka kubimenyetso bya AC.Metero ifite uburyo butandukanye bwo gupima RMS.
Iyi videwo ninkuru nziza yiperereza, kandi uziga byinshi kubyerekeranye na metero ndende.Mugihe ibintu byose nibisanzwe, tuzabona ibintu bidasanzwe, nkinsinga zikora nka capacator hamwe nabafana basakuza.
Nigeze gukorana na injeniyeri wateguye igice gisa.Yavuze ko iyi ari imbaraga nini, kandi bakoze imirimo myinshi kuruta uko bari babyiteze.Yizera ko iyi ari imwe mu mpamvu zatumye HP / Agilent / Keysight itangira ariko itigeze irangiza verisiyo yo kuzamura.Gusa Fluke ifite DMM igereranywa, kandi twavuga ko 3458 ikiri nziza.Biragoye cyane kubyara ibicuruzwa byiza.
Hari uwambwiye ko AVO8 ari multimeter nziza amafaranga ashobora kugura.Yakozwe ku ibuye, Mose yamanuye ku musozi mu gihe cyo gutsinda.Biragaragara ko nayobejwe.
Kubera ko AVO8 itamenyerewe kuruhande rwicyuzi, nasanze iki aricyo gisomwa gishimishije… http://www.richardsradios.co.uk/avo8.html
Nifuzaga AVO 8 nkiri ingimbi, ariko ibiciro byabo byari birenze ubushobozi bwanjye.Nyuma yimyaka 40, mfite Mk II ku ntebe yanjye.Mubihe bidasanzwe aho nkorera kuri radio ya valve, nshimishijwe cyane no gukoresha metero hamwe na cycle nziza.
Ibi byose byiza bya sofiya kubyerekeye izindi multimetero bituruka ku kutumva neza ibyateganijwe gukoreshwa HP3458A.Ntabwo ikoreshwa mugushakisha amakosa muri rusange, ariko kubiranga semiconductor iranga, kandi ubunyangamugayo bwayo murwego rwa uA na uV nibyiza cyane.Igikorwa cyo gupima insinga 4 (reba inyandiko 6 zihuza) hamwe na HPIB kugenzura nibindi bimenyetso byerekana ko bikoreshwa cyane cyane mu kuranga ibikoresho bya semiconductor.
Naguze Keithley ishaje 5.5 ndayisuzuma ninshuti.Umwaka ushize, byari byiza rwose.Kuva guhuza tristoriste kugeza gupima ibyinjira byinjira mumajwi.
Fluke 77 irashobora kuba igikoresho cyiza-rusange, ariko ntabwo igikoresho "cyiza" mubidukikije byose.Ntakibazo icyo usabwa cyose, Fluke igurisha neza: imodoka?88V.Ibidukikije biturika?87V ibidukikije biturika bitangiza ibidukikije?28 Babiri.Inganda rusange?87V.amakuru yamakuru?287/289. Kugenzura ibikorwa byinganda?789.
Usibye indi mirimo 77 idashobora gukora na gato, kimwe muri ibyo bikoresho gishobora gukora umurimo uwo ari wo wose Fluke 77 ishobora kurangiza, hamwe n’ukuri kandi kwagutse.ubushyuhe?Imyitwarire?Inshingano ya PWM / ubugari bwa pulse?inshuro?microampere?Umuvuduko wo kuzunguruka?Umuvuduko nyawo wa RMS?amahirwe masa.
Iyo igurishijwe $ 300 kuri Amazone, ntidushobora no kuvuga ko Fluke 77 ari uburyo bwingengo yimari kubakunzi.Birumvikana ko bihendutse kuruta izindi metero zashyizwe ku rutonde, ariko ibyo ntibivuga byinshi.(289 kuri ubu iragurishwa kubantu babyifuza ku $ 570).Ikigaragara ni uko niba ukoresheje metero kugirango ubone amafaranga, noneho Fluke ikwiye izishyura vuba.Birashoboka ko ukeneye imirimo 77 gusa.Sawa, gura 77.
Ikintu niki.Ahari abakoresha ubucuruzi barashobora gusobanura neza ibyo bakeneye buri munsi.Ahari isosiyete yohereje abatekinisiye 77s hanze, kandi umugenzuzi yari afite ikintu gishoboye (nka 87 hamwe na thermocouples) kubintu bidasanzwe bisaba gupima ubushyuhe.Ibi bisa nkibintu byubwenge kugabanya ikiguzi cyambere, ibyago biterwa nubujura cyangwa igihombo, nibindi, ariko urashobora gutangira kuzamura buri saha utakaza kuri metero.
Hobbyist ni gake basobanuye neza ibisabwa, nta nubwo bafite gahunda yo guta agaciro ishobora gukoreshwa muguhindura ibiciro mumyaka myinshi.Niba tugomba kugura metero ebyiri, mubisanzwe nibyiza kugura iyambere kunshuro yambere.
Ihangane, amaherezo nasanze Fluke 189 nakoresheje (uwabanjirije 289) kurutonde rwa craigslist ku giciro cyagabanijwe.Birasa nkaho itigeze isiga agasanduku kayo kandi ntigaragajwe rwose.Inama nagira kubandi bakunda ni ukugura Fluke ikoreshwa cyane ushobora kugura.Ibyo bishobora no kuba 77.
Sinzigera nsobanukirwa imikorere yimbere yubwoko bwibikoresho.Biragaragara, yarabikoze, kandi byari bishimishije cyane kureba uko akosora ikintu abandi bantu bashoboraga gutanga.
Imetero yanjye ya buri munsi ni Fluke 8060A, nayiguze mu 1983. Igihe Simpson 260 yategekaga ibikoresho bya tekinike, yari igikoresho gihindura umukino, kandi 8060A yari ikiri nziza.Ahagana mu 1990, nagombaga kohereza 8060A yanjye muri Fluke kubera ko chip yerekana shoferi yamenetse, ariko nyuma yo gusanwa, nakoresheje 8060A buri gihe.Mperutse guhinduranya Keysight 34461A 6.5 yimibare ya metero.Mugihe cyo gupima voltage by'agateganyo, gutandukana kwa Fluke 8060 kuva 34461A mubipimo byagenwe byari muri 1%.Ibi ntabwo ari bibi kuri metero imaze imyaka 30 yimanitse mugikoresho kuva kalibrasi iheruka.
Mfite Fluke ishaje 80sumthinsumpthinA.Hafi yimyaka 20, naguze LCD isimbuye iheruka Fluke yari afite mububiko!
Ukoresheje urubuga na serivisi zacu, wemera byimazeyo gushyira ibikorwa byacu, imikorere hamwe na kuki yamamaza.wige byinshi
Igihe cyo kohereza: Ukwakira-21-2021
