Power source: zoo tagnrho thiab tiag

Power source: zoo tagnrho thiab tiag
Power source: zoo tagnrho thiab tiag
Anonim

Ib qhov chaw tam sim no (IT) tuaj yeem suav tias yog cov khoom siv hluav taws xob uas muab hluav taws xob tam sim no rau ib qho hluav taws xob sab nraud, ywj pheej ntawm qhov hluav taws xob ntawm cov khoom siv hluav taws xob thiab ntawm nws tus kheej.

Ib yam khoom tshwj xeeb ntawm IT yog nws qhov loj (infinitely loj hauv siab) sab hauv tsis kam Rext. Yog vim li cas?

Cia peb xav txog tias peb xav hloov 100% ntawm lub zog ntawm lub hwj chim mov mus rau lub load. Nws yog kev hloov ntawm lub zog.

Txhawm rau xa 100% lub zog los ntawm qhov chaw mus rau qhov chaw thauj khoom, nws yog qhov tsim nyog los faib cov kev tawm tsam hauv Circuit Court kom cov load tau txais lub zog no. Cov txheej txheem no hu ua tam sim no splitting.

Tam sim no ib txwm siv txoj hauv kev luv tshaj plaws, xaiv txoj hauv kev uas tsis muaj qhov tsis kam. Yog li ntawd, nyob rau hauv peb cov ntaub ntawv, peb yuav tsum npaj lub hauv paus thiab thauj khoom nyob rau hauv xws li ib tug txoj kev uas tus thawj muaj ib tug ntau dua kev tiv thaiv tshaj qhov thib ob.

Qhov no yog kom ntseeg tau tias tam sim no ntws los ntawm qhov chaw mus rau qhov chaw thau khoom. Tias yog vim li cas peb siv hauv qhov piv txwv no qhov zoo tshaj plaws tam sim no qhov chaw uas muaj infinite infinite kuj. Qhov no ua kom ntseeg tau tias tam sim no ntws los ntawm IT raws txoj kev luv tshaj plaws, piv txwv li los ntawm kev thauj khoom.

VimRext ntawm qhov chaw yog infinitely loj, cov zis tam sim no los ntawm nws yuav tsis hloov (txawm hais tias qhov kev hloov ntawm tus nqi ntawm lub load kuj). Cov tam sim no yuav ib txwm zoo li ntws los ntawm qhov tsis muaj kev tiv thaiv ntawm IT mus rau lub load nrog kuj tsis tshua muaj zog. Qhov no qhia tau hais tias cov zis tam sim no daim duab ntawm qhov chaw zoo tagnrho.

qhov chaw tam sim no
qhov chaw tam sim no

Nrog rau qhov loj infinitely IT sab hauv tsis kam, txhua qhov kev hloov pauv ntawm cov nqi thauj khoom tsis muaj kev cuam tshuam rau tus nqi tam sim no ntws hauv qhov chaw sab nraud ntawm qhov zoo tagnrho.

Infinite resistance yog qhov tseem ceeb hauv Circuit Court thiab tsis tso cai rau qhov hloov pauv tam sim no (txawm tias muaj qhov hloov pauv tsis txaus ntseeg).

Cia peb saib ntawm qhov zoo tshaj plaws tam sim no hauv Circuit Court hauv qab no.

FET tam sim no qhov chaw
FET tam sim no qhov chaw

Vim IT muaj qhov tsis txaus ntseeg, qhov tam sim no ntws los ntawm qhov chaw nyiam pom nws txoj hauv kev tsawg kawg, uas yog 8Ω load. Tag nrho cov tam sim no los ntawm qhov tam sim no (100mA) ntws los ntawm 8Ω rub-up resistor. Qhov zoo tshaj plaws rooj plaub no yog piv txwv ntawm 100% zog efficiency.

Tam sim no cia peb saib ntawm IT Circuit Court tiag (raws li qhia hauv qab no).

hom ntawm qhov chaw tam sim no
hom ntawm qhov chaw tam sim no

Qhov no muaj qhov tsis kam ntawm 10 MΩ uas siab txaus los muab qhov tam sim no ze rau tag nrho 100 mA ntawm qhov chaw, txawm li cas los xij qhov no IT yuav tsis xa 100% ntawm nws lub zog.

Qhov no yog vim lub sab hauvqhov kev tawm tsam yuav siv qee qhov tam sim no, ua rau muaj qee yam ntawm cov xau.

Nws tuaj yeem suav nrog kev cais tshwj xeeb.

Qhov chaw xa 100 mA. Qhov tam sim no tau muab faib nruab nrab ntawm 10 MΩ qhov chaw thiab 8Ω load.

Nrog rau kev suav yooj yim, koj tuaj yeem txiav txim siab seb qhov twg ntawm qhov tam sim no ntws los ntawm kev thauj khoom tsis kam 8Ω

I=100mA -100mA (8x10-6 MΩ /10MΩ)=99.99mA.

Txawm hais tias lub cev qhov zoo tshaj plaws tam sim no tsis muaj, lawv ua tus qauv tsim ITs tiag tiag uas nyob ze ntawm lawv tus yam ntxwv.

Hauv kev xyaum, ntau hom kev siv tam sim no, sib txawv hauv kev daws teeb meem. Qhov yooj yim tshaj plaws IT tuaj yeem yog qhov hluav taws xob qhov hluav taws xob nrog lub resistor txuas nrog nws. Qhov kev xaiv no hu ua resistive.

Qhov zoo tam sim no tuaj yeem ua rau ntawm lub transistor. Kuj tseem muaj qhov pheej yig ua lag luam FET tam sim no qhov chaw, uas tsuas yog FET nrog p-n kev sib tshuam thiab lub rooj vag txuas nrog lub hauv paus.

Pom zoo: