He aha ke ʻano o ka hōʻailona multimeter ampere?

Nā mea

He aha ka manaʻo o ka hōʻailona amplifier multimeter?
Hōʻike Pūnaewele
Kū'ē a me ka uila
Mea hoʻonui hoʻonui
Nā pōkole
Pehea e hoʻohana ai i kahi ammeter?

Ma kēia ʻatikala, e kūkākūkā mākou i ke ʻano o ka hōʻailona ammeter ma kahi multimeter a pehea e hoʻohana ai i ka ammeter.

He aha ka manaʻo o ka hōʻailona amplifier multimeter?

He mea koʻikoʻi ka hōʻailona amplifier multimeter inā makemake ʻoe e hoʻohana pololei i ka multimeter. ʻO ka multimeter kahi mea hana pono e hiki ke kōkua iā ʻoe i nā kūlana he nui. Hiki ke hoʻohana ʻia no ka hoʻāʻo ʻana i ka maikaʻi o nā uea, hoʻāʻo i nā pākahi, a ʻike i nā ʻāpana e hana hewa ai kāu kaapuni. Eia naʻe, inā ʻaʻole ʻoe maopopo i nā hōʻailona āpau ma ka multimeter, ʻaʻole kōkua nui ia iā ʻoe.

ʻO ke kumu nui o ka hōʻailona amplifier e hōʻike i ka nui o ke kahe e kahe ana ma ke kaapuni. Hiki ke ana ʻia kēia ma ka hoʻopili ʻana i ke alakaʻi multimeter i ka moʻo me ke kaapuni a me ke ana ʻana i ka hāʻule o ka uila ma waena o lākou (ke kānāwai Ohm). ʻO ka ʻāpana no kēia ana he volts no ka ampere (V/A). (1)

ʻO ka hōʻailona hoʻonui e pili ana i ka ʻāpana ampere (A), kahi e ana i ke au uila e kahe ana ma kahi kaapuni. Hiki ke hōʻike ʻia kēia ana ma nā milliamps mA, kiloamps kA a i ʻole megaamps MA ma muli o ka nui a i ʻole ka liʻiliʻi o ka waiwai.

Hōʻike Pūnaewele

ʻO ka ampere ka ʻāpana SI o ke ana. He ana ia i ka nui o ke au uila e kahe ana ma kahi kiko i hoʻokahi kekona. Ua like kekahi ampere me 6.241 x 1018 electrons e hele ana ma kekahi wahi i hoʻokahi kekona. ʻO ia hoʻi, 1 amp = 6,240,000,000,000,000,000 electrons no kekona.

Kū'ē a me ka uila

ʻO ke kū'ē e pili ana i ke kū'ē i ke kahe o ke au i loko o kahi kaapuni uila. Ana 'ia ke kū'ē i nā ohms a aia kahi pilina ma'alahi ma waena o ka volta, ka manawa a me ke kū'ē: V = IR. ʻO ia ke ʻano hiki iā ʻoe ke helu i kēia manawa i nā amps inā ʻike ʻoe i ka volta a me ke kūpaʻa. No ka laʻana, inā he 3 volts me ke kū'ē o 6 ohms, a laila ʻo 0.5 amperes ka manawa (3 puʻunaue ʻia e 6).

Mea hoʻonui hoʻonui

m = mili a i ʻole 10^-3
u = micro a i ʻole 10^-6
n = nano a i ʻole 10^-9
p = pico a i ʻole 10^-12
k = kilokani a 'o ia ho'i "x 1000". No laila, inā ʻike ʻoe i ka hōʻailona kA, ʻo ia ka helu x he 1000

Aia kekahi ala e hōʻike ai i ke au uila. ʻO nā ʻāpana hoʻohana maʻamau o ka ʻōnaehana metric ʻo ia ka ampere, ampere (A), a me ka milliamp (mA).

Kumu: I = Q/t kahi:
I = ke au uila ma nā amps (A)
Q = ka hoʻoili i loko o nā coulomb (C)
t= kaawale manawa i kekona (s)

Hōʻike ka papa inoa ma lalo nei i nā mea hoʻohana maʻamau a me nā submultiples o ka ampere:

1 MOm = 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

Nā pōkole

ʻO kekahi o nā pōkole maʻamau e pili ana i ke au uila āu e hālāwai ai. ʻo lākou:

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

Pehea e hoʻohana ai i kahi ammeter?

Ana ana ka Ammeters i ka nui o ke au a i ole ke kahe o ka uila ma na amp. Hoʻolālā ʻia nā Ammeters e hoʻopili pū ʻia me ke kaapuni a lākou e nānā nei. Hāʻawi ka ammeter i nā heluhelu pololei loa i ka wā e holo ana ke kaapuni i ka haʻahaʻa piha ke heluhelu.

Hoʻohana ʻia nā Ammeters i nā ʻano uila a me nā noi uila, pinepine ma ke ʻano he ʻāpana o nā mea paʻakikī e like me nā multimeters. No ka hoʻoholo ʻana i ka nui o ka ammeter e koi ʻia, pono ʻoe e ʻike i ka nui o kēia manawa i manaʻo ʻia. ʻOi aku ka nui o nā amps, ʻoi aku ka laulā a me ka mānoanoa o ka uea e pono ai no ka hoʻohana ʻana i kahi ammeter. ʻO kēia ke kumu no ka hana ʻana o ke au kiʻekiʻe i kahi māla magnetic e hiki ke hoʻopilikia i ka heluhelu ʻana i nā uwea liʻiliʻi.

Hoʻohui nā multimeters i kekahi mau hana i loko o ka mea hoʻokahi, me nā voltmeters a me ohmmeters, a me nā ammeters; ʻO kēia ka mea e pono ai lākou no nā ʻano hana like ʻole. Hoʻohana pinepine ʻia lākou e nā mea uila, nā ʻenekini uila a me nā mea kālepa ʻē aʻe.

E nānā i kekahi o kā mākou ʻatikala ma lalo nei.