Gwero Current: yabwino ndi weniweni

Gwero zikusinthira (IT) akhoza amatengedwa kuti ndi chipangizo amagetsi zimafunika mu kunja dera panopa magetsi, zomwe zimadalira wa voteji pa zinthu dera ndi yokha.

IT amadziwika ndi ikuluikulu (Choncho malire) mkati kukana R _ext. N'chifukwa chiyani tikutero?

Tiyeni tiyerekeze kuti tikufuna pochitika 100% mphamvu ku mphamvu zoyendetsera kuti katunduyo. Izi ndi kulanda mphamvu.

Kupulumutsa 100% mphamvu kuchokera ku gwero kuti katundu ayenera anagawira kukana mu dera lonse, ndi kutsegula mphamvu analandira. Zimenezi amatchedwa mafunde akuwaza.

Current nthawi zonse amatsatira njira yayifupi, kusankha njira ya kukana osachepera. Choncho, Ifeyo kuyenda gwero ndi katundu mu njira yakuti woyamba ali ndi kukana apamwamba kuposa wachiwiri.

Izi zipangitsa kuti panopa operekedwa ndi gwero kwa katundu. Ndicho chifukwa ife ntchito chitsanzo ichi yabwino gwero panopa ali wopandamalire mkati kukana. Izi zimathandiza otaya panopa kuchokera pa njira yayifupi, kuti, kudzera mwa katunduyo.

Popeza R _ext gwero ali wopandamalire, linanena bungwe panopa ku sizisintha (ngakhale kusintha katundu kukana phindu). Current udzayesa nthawizonse ikuyenda mwa kukana mbali wamphamvu IT katundu, kukhala ndi kukana wotsika. Zithunzi Izi zikusonyeza abwino linanena bungwe gwero panopa.

Ndi wamphamvu zazikulu kukana mkati IT iliyonse kusintha katundu impedance mfundo ziribe mphamvu pa kuchuluka kwa panopa loyenda mu dera kunja gwero abwino.

impedance wopandamalire ali wamphamvu mu unyolo ndi salola kusintha zikusinthira (ngakhale katundu impedance fluctuation).

Tiyeni tione chiwembu ndi yabwino gwero panopa, monga pansipa.

Monga kukana wopandamalire, ukuyenda kuchokera ku gwero panopa amamuchititsa kupeza njira kukaniza osachepera, amene ali 8Ω-Nye katundu. apano onse ku gwero zikusinthira (100 MA) umayenda mwa katundu resistor 8Ω. Ichi ndi chitsanzo cha yabwino choncho 100 Mwachangu% mphamvu.

Tsopano tiyeni tikambirane chiwembu ndi iwo enieni (monga pansipa).

Njira imeneyi ali ndi kulimbikira megohms 10, ndilo mokwanira mkulu kuonetsetsa panopa ali pafupi kwambiri mtengo wodzala 100 MA gwero, koma mu nkhani iyi si kuupereka 100% a mphamvu.

Ichi ndi chifukwa kukana mkati mwa gwero adzakhala kusankha ena pano, kotero kuti chimaoneka kutayikira ena.

Iwo akhoza kuchita masamu ntchito pogawanikana pamawere yeniyeni.

Gwero zotuluka 100 MA. panopa Izi ndiye anagawa pakati pa resistors 10 MOhm gwero ndi 8Ω katundu.

A mawerengedwe zosavuta kungathandize kudziwa za panopa umayenda mwa katundu impedance 8Ω

Ine = -100 MA 100 MA (8x10 ^-6 MΩ / 10MΩ) = 99.99mA.

Ngakhale abwino thupi gwero panopa kulibe, amatumikira monga chitsanzo yomanga weniweni pafupi ndi iwo mu makhalidwe awo.

Zochita zosiyanasiyana magwero mphamvu, kukonza njira zosiyanasiyana. Losavuta IT angamapange dera voteji gwero ndi resistor chikugwirizana thereto. zosinthika iyi akutchedwa resistive.

Gwero panopa wabwino kwambiri, mungathe kumanga pa transistor lapansi. Palinso yotsika mtengo siriyo panopa gwero munda zotsatira transistor, umene ndi FET okha pn ziwirizi ndi chipata chikugwirizana ndi gwero.