[Marco] Nānā i nā mika he nui.Eia naʻe, manaʻo ʻo ia ʻo HP3458A ka mea maikaʻi loa, ʻoiai ua hoʻolauna ʻia lākou ma mua o 30 mau makahiki i hala ma 1989. Ua hāʻawi kekahi i kekahi iā [Marco], akā ua hōʻike ʻo ia i kekahi mau leka hewa a hōʻike i ke ʻano paʻa ʻole i ka wā i hoʻomaka ai, no laila pono ʻo ia i kahi hoʻoponopono.
Wahi a [Marco], hōʻike ka helu kuhi hewa i kahi pilikia me ka mea hoʻololi analog-to-digital multi-slope, ʻo ia ka mea e ʻokoʻa ai ka mika.He 8.5 mau huahelu ka mika, no laila, ʻaʻole e ʻoki ʻia ka hana hoʻololi maʻamau.
ʻO ka nūhou maikaʻi e pili ana i kēia pilikia ʻo ia ka hāʻawi ʻana iā mākou i kahi kumu e nānā ai i loko o ka pahu.ʻO kēlā me kēia motherboard i loko e like me ka paʻakikī e like me ka motherboard PC hou.I loko o kēia pae pololei, ua uhi ʻia ka papa kaapuni i kahi pūnaewele resistor hana kiʻekiʻe.
ʻO ke ʻano maʻamau o ka hoʻololi ʻana i ka volta i kahi helu e hoʻohana i ka manawa i koi ʻia e hoʻopaʻa a hoʻokuʻu i kahi capacitor, a ʻo ka manawa i makemake ʻia e hōʻike i ka volta.Hoʻohana ka mika i nā mea pale slope he nui, wehewehe ʻo [Marco] i ka hoʻohana ʻana o ka mika i ka wikiwiki a me ka liʻiliʻi o ka piʻi pololei no ka loaʻa ʻana o ka heluhelu ʻinoʻino, a laila hoʻohana i kahi piʻi mālie a pololei e hoʻomaʻemaʻe i nā helu haʻahaʻa.
Loaʻa i ka chip maʻamau kahi IC a me kahi pūnaewele resistor maʻamau.Inā hāʻule, aneane hiki ʻole ke hoʻoponopono i ka mika me ka hele ʻole i ke kikowaena lawelawe hale hana e kūʻai i papa kaapuni hou no kahi $3,000.Me he mea lā e hana pono ana ka chip maʻamau, a ʻo ka hoʻololi ʻana i ka mea hoʻohālikelike i ʻike ʻia ʻaʻole kōkua.
He aha ka hope?E kūʻai i nā ʻāpana āpau āu e loaʻa ai no ka papa kaapuni (ma kahi o $100), a laila pani i nā ʻāpana āpau.Makemake mākou i kāna ala e wehe ai i nā alakaʻi i ka wā o ke kaʻina hana hou.I ka wā mua, ʻike ʻia kēia hiki, akā ʻaʻole i hāʻule ka hoʻoponopono ponoʻī.Me he mea lā ua haki ka IC maʻamau, no laila ua hoʻololi ʻo ia i ka papa hoʻololi holoʻokoʻa.
Ua hoʻomaʻemaʻe kēia i ka hewa nui, akā ua pilikia kekahi mau ana, no laila e hoʻoponopono hou ʻia kekahi papa.ʻO ke kaapuni i nīnau ʻia e hana i ka hoʻololi RMS ma nā hōʻailona AC.Loaʻa i ka mika nā ʻano hana like ʻole e ana i ka RMS.
He moʻolelo makaʻu nui kēia wikiō, a e aʻo nui ʻoe e pili ana i nā mika hoʻonā kiʻekiʻe.Ke maʻamau nā mea a pau, e ʻike mākou i kekahi mau mea ʻē aʻe, e like me nā uwea e hana ana ma ke ʻano he capacitors a me nā mea pā kani.
Ua hana au me kahi ʻenekinia nāna i hoʻolālā i ka ʻāpana analog.Ua ʻōlelo ʻo ia he hana nui kēia, a ua hana lākou i nā hana ʻoi aku ma mua o kā lākou i manaʻo ai.Manaʻo ʻo ia he ʻāpana kēia o ke kumu i hoʻomaka ai ʻo HP/Agilent/Keysight akā ʻaʻole i hoʻopau i ka mana hoʻonui.ʻO Fluke wale nō ka DMM like, a hiki ke ʻōlelo ʻia ʻo ka 3458 ka mea maikaʻi loa.He paʻakikī loa ka hana nui ʻana i nā huahana ʻoi aku ka maikaʻi.
Ua haʻi mai kekahi iaʻu ʻo ka AVO8 ka multimeter maikaʻi loa i hiki i ke kālā ke kūʻai.Ua kālai ʻia ma luna o ka pōhaku, a Mose i lawe iho mai ka mauna mai i ka wā o ka lanakila.Ua maopopo iaʻu ua alakaʻi hewa ʻia.
No ka mea ʻaʻole maʻamau ʻo AVO8 ma kēia ʻaoʻao o ka loko iʻa, ʻike wau he heluhelu hoihoi kēia… http://www.richardsradios.co.uk/avo8.html
Makemake au i ka AVO 8 i koʻu wā ʻōpio, akā ʻoi aku ko lākou kumukūʻai ma mua o koʻu hiki.40 mau makahiki ma hope mai, loaʻa iaʻu kahi Mk II ma koʻu pae.I ke kūlana ʻano ʻē aʻu e hana ai ma ka lekiō valve, hauʻoli nui wau i ka hoʻohana ʻana i ka mika me ka pōʻai pololei.
ʻO kēia mau manaʻo maikaʻi aʻe e pili ana i nā multimeter ʻē aʻe mai ka hoʻomaopopo ʻole ʻana i ka noi i manaʻo ʻia o ka HP3458A.ʻAʻole hoʻohana ʻia no ka ʻimi hewa maʻamau, akā no ka hōʻike semiconductor, a ʻoi aku ka maikaʻi o kona pololei ma ka laulā uA a me uV.ʻO ka hana ana ʻana 4-wire (e ʻike i nā pou paʻa 6) a me ka mana HPIB he mau hōʻike hou aʻe e hoʻohana nui ʻia ai e ʻike i nā mea semiconductor.
Ua kūʻai au i kahi 5.5 Keithley kahiko a hoʻopaʻa ʻia e kahi hoaaloha.I ka makahiki i hala, ua maʻalahi loa.Mai nā transistors pili i ke ana ʻana i ka impedance hoʻokomo o nā mea hoʻonui leo.
ʻO Fluke 77 paha he mea hana maʻamau maikaʻi, akā ʻaʻole ia ka mea "maikaʻi" ma nā wahi āpau.ʻAʻohe mea o kāu mau koi, ʻoi aku ka maikaʻi o Fluke: nā kaʻa?88V.Kaiapuni pahū?87V pahū-hōʻoia koʻikoʻi kaiapuni?28 ʻElua.ʻOihana Nui?87V.mooolelo ikepili?287 / 289. Ka hoʻomalu kaʻina hana ʻoihana?789.
Ma waho aʻe o nā hana ʻē aʻe i hiki ʻole i ka 77 ke hana, hiki i kekahi o kēia mau mea hana ke mālama i nā hana a Fluke 77 hiki ke hoʻopau, me ka pololei kiʻekiʻe a me ka bandwidth ākea.wela?Conductivity?PWM hana pōʻaiapuni/puʻi laula?pinepine?microampere?Holo wikiwiki?Volta RMS maoli?Pōmaikaʻi iā ʻoe.
Ke kūʻai aku nei ia no $300 ma Amazon, ʻaʻole hiki iā mākou ke ʻōlelo ʻo Fluke 77 kahi koho kālā no nā amateurs.ʻOiaʻiʻo, ʻoi aku ka maikaʻi ma mua o nā mika ʻē aʻe i helu ʻia, akā ʻaʻole ia e haʻi nui.(Ke kūʻai ʻia nei ʻo 289 i nā poʻe hoihoi no $570).ʻO ka ʻoiaʻiʻo inā ʻoe e hoʻohana i nā mika e loaʻa ke kālā, a laila e uku koke ka Fluke pololei iā ia iho.Malia paha he 77 wale nō mau hana.ʻAe, kūʻai i kahi 77.
Penei ka mea.Hiki paha i nā mea hoʻohana pāʻoihana ke wehewehe pono i kā lākou mau pono o kēlā me kēia lā.Ua hoʻouna paha kekahi hui i nā ʻenehana 77, a ua paʻa ka luna i kahi mea ʻoi aku ka mākaukau (e like me 87s me nā thermocouple) no nā kūlana kakaʻikahi e koi ana i ke ana wela.He mea naʻauao kēia e hōʻemi i ke kumukūʻai mua, ka pilikia ma muli o ka ʻaihue a i ʻole ka poho, a me nā mea ʻē aʻe, akā hiki iā ʻoe ke hoʻomaka i ka hoʻomaikaʻi ʻana i kēlā me kēia hola āu e hoʻopau ai i ka mika.
ʻAʻole i loaʻa iā lākou kahi hoʻolālā hoʻohaʻahaʻa i hiki ke hoʻohana ʻia e amortize i nā kumukūʻai no kekahi mau makahiki.Inā kūʻai mākou i ʻelua mau mika, ʻoi aku ka maikaʻi o ke kūʻai ʻana i ka mea kūpono no ka manawa mua.
Me ka hoʻomanawanui, ua loaʻa iaʻu kaʻu Fluke 189 i hoʻohana ʻia (ka mea mua o 289) ma craigslist ma ke kumu kūʻai hoʻemi.Me he mea lā ʻaʻole ia i haʻalele i kāna pahu a ʻaʻole i hōʻailona ʻia.ʻO kaʻu ʻōlelo aʻo i nā mea leʻaleʻa ʻē aʻe e kūʻai i ka Fluke ikaika loa i hiki iā ʻoe ke loaʻa.He 77 paha ia.
ʻAʻole loa au e hoʻomaopopo i ka hana o loko o kēlā ʻano mea ʻai.ʻIke loa, ua hana ʻo ia, a he mea hoihoi loa ka nānā ʻana iā ia e hoʻoponopono i kahi mea i hiki i nā poʻe ʻē aʻe ke haʻalele.
ʻO Fluke 8060A kaʻu mita lawe i kēlā me kēia lā, aʻu i kūʻai mai ai i ka makahiki 1983. I ka wā i noho aliʻi ai ka Simpson 260 i ka pahu hana ʻenehana, he mea hoʻololi pāʻani ia, a ua maikaʻi ka 8060A.Ma kahi o 1990, pono wau e hoʻihoʻi i kaʻu 8060A iā Fluke no ka mea ua haki ka chip driver hōʻike, akā ma hope o kēlā hoʻoponopono, ua hoʻohana mau wau i ka 8060A.Ua hoʻoponopono hou au i ka Keysight 34461A 6.5 digit benchtop mika.I ka wā o ke ana ʻana o ka volta pōkole, ʻo ka haʻalele ʻana o ka Fluke 8060 mai ka 34461A i loko o kāna bandwidth helu ʻia i loko o 1%.ʻAʻole maikaʻi kēia no ka mika e lele ana i loko o ka pahu no 30 mau makahiki mai ka hoʻopaʻa ʻana hope.
Loaʻa iaʻu kahi Fluke 80sumthinsumpthinA kahiko.Ma kahi o 20 mau makahiki i hala aku nei, ua kūʻai au i ka LCD pani hope loa i loaʻa iā Fluke i ke kumukūʻai no ia!
Ma ka hoʻohana ʻana i kā mākou pūnaewele a me nā lawelawe, ʻae maopopo ʻoe i ka waiho ʻana o kā mākou hana, hana a me nā kuki hoʻolaha.aʻo hou mai
Ka manawa hoʻouna: Oct-21-2021
