Lusho ukuthini uphawu lwe-ampere multimeter?

Okuqukethwe

Lusho ukuthini uphawu lwe-multimeter amplifier?
Incazelo yedivayisi
Ukumelana ne-voltage
Iziphindaphinda ze-amplifier
Izifinyezo
Indlela yokusebenzisa i-ammeter?

Kulesi sihloko, sizoxoxa ngencazelo yophawu lwe-ammeter ku-multimeter nendlela yokusebenzisa i-ammeter.

Lusho ukuthini uphawu lwe-multimeter amplifier?

Uphawu lwe-multimeter amplifier lubaluleke kakhulu uma ufuna ukusebenzisa i-multimeter ngendlela efanele. I-multimeter iyithuluzi elibalulekile elingakusiza ezimeni eziningi. Ingasetshenziselwa ukuhlola ikhwalithi yezintambo, hlola amabhethri, futhi uthole ukuthi yiziphi izingxenye ezenza isekethe yakho ingasebenzi kahle. Nokho, uma ungaziqondi zonke izimpawu ku-multimeter, ngeke kukusize kakhulu.

Inhloso eyinhloko yophawu lweamplifier ukukhombisa inani lamanje eligeleza kusekethe. Lokhu kungalinganiswa ngokuxhuma imikhondo ye-multimeter ochungechungeni nesekhethi kanye nokulinganisa ukwehla kwamandla kagesi kuwo wonke (Umthetho ka-Ohm). Iyunithi yalesi silinganiso ngamavolthi nge-ampere (V/A). (1)

Uphawu lweamplifier lubhekisela kuyunithi ye-ampere (A), ekala amandla kagesi ageleza kusekethe. Lesi silinganiso singaphinda sivezwe ngama-milliamp mA, kiloamps kA noma ama-megaamp MA kuye ngokuthi likhulu noma lincane kangakanani inani.

Incazelo yedivayisi

I-ampere iyunithi yokulinganisa ye-SI. Ikala inani lamandla kagesi ageleza ngephuzu elilodwa ngomzuzwana owodwa. I-ampere eyodwa ilingana nama-electron angu-6.241 x 1018 adlula endaweni ethile ngomzuzwana owodwa. Ngamanye amazwi, i-1 amp = 6,240,000,000,000,000,000 ama-electron ngomzuzwana.

Ukumelana ne-voltage

Ukumelana kubhekisela ekuphikiseni ukugeleza kwamandla kumjikelezo kagesi. Ukumelana kukalwa ngama-ohms futhi kunobudlelwano obulula phakathi kwe-voltage, yamanje kanye nokumelana: V = IR. Lokhu kusho ukuthi ungakwazi ukubala okwamanje kuma-amps uma wazi i-voltage nokumelana. Isibonelo, uma kukhona ama-volts angu-3 anokumelana kwama-ohms angu-6, khona-ke okwamanje yi-0.5 amperes (3 ihlukaniswe ngo-6).

Iziphindaphinda ze-amplifier

m = milli noma 10^-3
u = micro noma 10^-6
n = nano noma 10^-9
p = pico noma 10^-12
k = kilogram futhi lisho "x 1000". Ngakho-ke, uma ubona uphawu kA, kusho inani lika-x ngu-1000

Kukhona enye indlela yokuveza amandla kagesi. Amayunithi asetshenziswa kakhulu ohlelo lwemethrikhi yi-ampere, ampere (A), ne-milliamp (mA).

Ifomula: I = Q/t lapho:
I= ugesi wama-amps (A)
Q= ukushaja ngama-coulombs (C)
t= isikhawu sesikhathi kumasekhondi (s)

Uhlu olungezansi lubonisa ukuphindaphinda okuningi okuvame ukusetshenziswa nama-submultiples we-ampere:

1 UMAMA = 1,000 Ohm = 1 kOhm
1 mkOm = 1/1,000 Ohm = 0.001 Ohm = 1 mOm
1 nOhm = 1/1,000,000 0 XNUMX Ohm = XNUMX

Izifinyezo

Ezinye izifinyezo ezijwayelekile zibhekisela kugesi ongase uhlangane nawo. Kunjalo:

mA - milliamp (1/1000 amp)
μA - microampere (1/1000000 ampere)
nA – nanoampere (1/1000000000 ampere)

Indlela yokusebenzisa i-ammeter?

Ama-ammeter akala inani lamanje noma ukugeleza kukagesi kuma-amps. Ama-ammeter aklanyelwe ukuxhunywa ochungechungeni ngesekethe ayiqaphayo. I-ammeter inikeza ukufundwa okunembe kakhulu lapho umjikelezo usebenza ngomthwalo ogcwele lapho ufunda.

Ama-ammeter asetshenziswa ezinhlelweni ezahlukahlukene zikagesi neze-elekthronikhi, ngokuvamile njengengxenye yamathuluzi ayinkimbinkimbi njengama-multimeter. Ukuze unqume ukuthi iyiphi i-ammeter yosayizi edingekayo, udinga ukwazi inani lamanje elilindelekile. Lapho isibalo sama-amps siphezulu, intambo edingekayo ukuze isetshenziswe ku-ammeter iba banzi futhi ibe mkhulu. Lokhu kungenxa yokuthi amandla aphezulu adala insimu kazibuthe engaphazamisa ukufunda izintambo ezincane.

Ama-Multimeters ahlanganisa imisebenzi eminingana kudivayisi eyodwa, okuhlanganisa ama-voltmeters nama-ohmmeters, nama-ammeters; lokhu kubenza basebenziseke ngendlela emangalisayo ezinhlelweni ezahlukene. Zivame ukusetshenziswa ngabasebenza ngogesi, onjiniyela bezinto zikagesi kanye nabanye abahwebi.

Bheka ezinye zezihloko zethu ngezansi.