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He pūrere mō te ine i te kaha pūhiko. Ko te ara matua

rangatira katoa motokā whakamiharo te mea he mea tika hoki ine i te kaha o te pūhiko. Ine i tēnei uara kei te maha kawea atu i roto i te wahi o te tiaki whakaritea, engari ka waiho whai hua ki te ako ki te tautuhi i te reira.

He pūrere mō te ine i te kaha pūhiko

kaha pūhiko - he tawhā e whakatau te nui o te pūngao tukua e te pūhiko i te tetahi mānukanuka i roto i te kotahi haora. Kei te whanganga te reira i roto i A / h (wae iahiko haora), ka tei runga i te kiato o te kawehiko, whakaritea nei e te pūrere motuhake - ine kiato wai. A, no te te hoko koe i te pākahiko hou, nga tawhā hangarau katoa o te ngā kaiwhakanao i runga i te tinana. Ko taea te tautuhi tenei uara i koe. He taputapu motuhake me ngā tikanga.

Ko te ara māmā - ko ki te tango i te pourewa motuhake, pērā i "tautau". Ko te pūrere hou mō te ine i te āheipuringa o te pūhiko motokā, me te tona ngaohiko. I roto i tenei take, ka noho koe i te nui iti rawa o te wā, me te whiwhi i te hua pono. Hei taki i, me hono koe te pūrere ki te terminals pākahiko me mo te ruarua hēkona rite whakatau reira e kore anake te kaha me te ngaohiko o te pūhiko me te mana o te mau papaa parau. Heoi, i reira e te tahi atu tikanga o te whakatau i te kaha pūhiko.

Ko te tikanga tuatahi (puāwaitanga)

Hei tauira, ka taea te whakamahi i te mita rite he pūrere mō te ine kaha pūhiko o te waka, engari ki te awhina o te pānui tika whiwhi koutou. He tikanga matua mō tenei tikanga (i huaina tikanga mana rere) ko te tiaki pākahiko tonu. Hei timata, e hiahia ana koe ki te hono atu ki te kiritaki kaha pākahiko (rawa e tika ana tikanga rama mana 60W).


I muri ko te mea e tika ana ki te huihui i te mekameka, i ngā o te kawenga multimeter, pūhiko, kaiwhakamahi, me te kōnae. Ki te kore e te umanga huri i roto i tona tiahotanga mō te 2 meneti (te kore e kore e taea te whakahokia te pūhiko), tango pānuitanga i wā wā motuhake. Kia taka te taupū raro te ngaohiko paerewa o te pūhiko (ko reira i raro i kawenga 12B), tīmata tona rere. Na, e matau i te nui o te wā i tangohia e te reira ki te whakaoti i te pahua o rokiroki pūngao me te kawenga kiritaki o nāianei, he mea e tika ana ki te tini i ēnei uara. Ko te hua o enei taurangi ko te kaha tūturu o te pūhiko. Ki te he rerekē i te raraunga uruwhenua i roto i te taha iti te uara whiwhi, me ki te whakakapi i te pākahiko. hanga i tēnei tikanga e taea ki te whakatau i te kaha o tetahi pūhiko. Ko te ngoikoretanga o tenei tikanga, ko te wā-e kai ana.

Ko te tikanga tuarua

Ko taea hoki ki te whakamahi i te tikanga i roto i i tukua te pākahiko e i roto i te parenga iahiko mā te tono i te ara iahiko motuhake. Mā te whakamahi i te stopwatch whakatau te wa tangohia ki fakahoko. Mai ngaro te pūngao kei i te ngaohiko i waenganui i te 1 wae, e taea ngāwari tatou whakatau i te kaha o te nāianei mā te whakamahi i te tātai ahau = UR, te wahi ahau - kaha o nāianei, U - ngaohiko, R - resistance. He mea tika ki te karo i oti rere o te pūhiko, te whakamahi i, mo te tauira, tānga motuhake.

Me pēhea te ki te hanga i tō ake pūrere

I roto i te ngaro o te pea o te hoko pūrere rite, ka taea e koe te kohikohi tonu te pūrere mō te ine i te kaha o te pūhiko i ringa.

Hei whakatau i te āhua o te tiaki me te kaha o te pūhiko, ka taea e koe te whakamahi i te utanga marau. Hoki hoko ko he rota o tauira o kōhao rite-hanga, engari ka taea e te kohikohi koe i te reira iho. Next whakaaro tatou tetahi o nga kōwhiringa.

Ka whakamahia e tēnei tauira i te whānui, te whakatutuki tika inenga teitei. He he he ātete kawenga hanga-i roto i. Kei te wehea te tauine ki e rua awhe (0-10 me 10-15 V), e homai he whakaiti atu o te hapa inenga. Ko te taputapu hoki kua he tauine 3-wae, me te tahi atu tauranga o te pūrere ine tuku i te arowhai o kēne pūhiko takitahi. Ko te tauine i runga i 15B tutuki e whakaiti i te ngōhiko me te ngaohiko Zener. faarahi te rahi o tēnei wā o te pūrere, ina nui te uara ngaohiko te taumata whakatuwheratanga o te ngōhiko zener. A, no te ngaohiko Ko whakamana hē mahi tiaki wehenga tawhiti e te ngōhiko.

Kaupapa: R1- zener whakawhiti te hiahiatia o nāianei; R2 ko R3 - parenga, tīpakohia ki microammeter M3240; R4 - whakatau te whanui o te whanganga kuiti; ngā kawenga resistance te loká SB1 - R5.

whakaritea te kaha o te nāianei kawenga e te ture o Ohm. I roto i te tātaitanga i te ātete kawenga.

He pūrere mō te ine i te kaha AA pūhiko

whanganga kaha AA pūhiko e i roto i mA / h (milliamps ia haora). inenga o taua pākahiko hoki e taea te tono peihana motuhake e tautuhi nāianei, ngaohiko me te kaha o te pūhiko. He tauira o te pūrere taua ko te pūrere hoki whanganga te kaha pūhiko AccuPower IQ3, e kua he supply te mana ki te whānuitanga ngaohiko i 100 ki te 240 volts. Ki te whanganga i te hiahia ki te kōkuhu pākahiko ki te pūrere, a ka whakaaturia nga tawhā e hiahiatia katoa.

Whakatau i o te ipu ki te rihi

Hoki, ka taea te whakaritea te kaha ki te rihi tikanga. I muri te whakatau i te nui o nāianei tiaki (kei te tohu te reira i roto i te āhuatanga o te pūrere), me tino whakatupato te pākahiko, me ki te kitea te wa pahure. I muri whakanuia enei uara e rua, whiwhi tatou he kaha tata.

More taea te whiwhi pānuitanga tika mā te whakamahi i tētahi atu tikanga mo e hiahia ana koe i te pākahiko tino-i ako, he stopwatch, he multimeter me te kiritaki (ka taea e koe te whakamahi i, pēnei i te kasa). Tūhono i te kiritaki ki te pūhiko, ka whakamahi i te multimeter whakatau i te kohi o nāianei (iti ko reira, te pono atu te hua). mōhio tatou i te wa i roto i i whakanuia te kasa, me te hua e te kohi o nāianei.

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