Kev ntsuas ntawm MOS Field Effect Transistor nrog Multimeter
1. Voltage ntau:
Thaum kuaj los yog tsim khoom, nws tuaj yeem siv los ntsuas qhov voltage ntawm txhua tus pin ntawm lub cuab yeej, thiab muab piv rau qhov qub voltage los txiav txim seb puas puas. Nws kuj tseem tuaj yeem siv los txheeb xyuas qhov kev tswj hwm tus nqi hluav taws xob ntawm qhov hluav taws xob tswj hluav taws xob diode nrog tus nqi hluav taws xob tsawg dua. Lub hauv paus ntsiab lus yog qhia nyob rau hauv daim duab: R yog 1K, thiab qhov voltage ntawm lub hwj chim mov kawg yog nyob ntawm nominal voltage tswj tus nqi ntawm lub voltage regulator diode. Feem ntau, nws yog 3V lossis ntau dua li qhov nominal voltage, tab sis yuav tsum tsis pub tshaj 15V. Siv multimeter los ntsuas tus nqi voltage ntawm ob kawg ntawm D raj, uas yog qhov tseeb voltage stabilization tus nqi ntawm D raj.
2. Ntau yam tam sim no
Txuas lub 'meter' hauv series rau hauv Circuit Court los ntsuas thiab saib xyuas qhov tam sim no. Yog tias qhov tam sim no deviates deb ntawm tus nqi ib txwm muaj (raws li kev paub dhau los lossis cov yam ntxwv uas twb muaj lawm), lub voj voog tuaj yeem hloov kho lossis kho yog tias tsim nyog. Koj tseem tuaj yeem siv 20A ntau yam ntawm qhov ntsuas no los ntsuas qhov luv-circuit tam sim no ntawm lub roj teeb, los ntawm kev txuas ncaj qha rau ob qhov kev sojntsuam mus rau ob qhov kawg ntawm lub roj teeb. Nco ntsoov tsis txhob tshaj 1 thib ob hauv lub sijhawm! Ceeb Toom: Txoj kev no tsuas yog siv tau rau cov roj teeb qhuav, 5th thiab 7th rechargeable roj teeb, thiab cov pib tshiab yuav tsum tau coj los ntawm cov neeg ua haujlwm paub txog kev saib xyuas. Tsis txhob ua haujlwm ntawm koj tus kheej! Kev ua tau zoo ntawm lub roj teeb tuaj yeem txiav txim siab raws li qhov luv-circuit tam sim no. Nyob rau hauv cov ntaub ntawv ntawm ib tug tag nrho them roj teeb ntawm tib hom, ib tug ntau dua short-circuit tam sim no zoo dua.
3. Kev tiv thaiv hom;
Ib txoj hauv kev uas tuaj yeem siv los txiav txim qhov zoo ntawm cov resistors, diodes, thiab transistors. Yog hais tias qhov tseeb tus nqi ntawm cov resistor deviates ntau dhau los ntawm tus nqi nominal, nws tau puas lawm. Rau ib lub transistor nrog ob lossis peb tus ncej, yog tias qhov kev tiv thaiv ntawm ob tus pins tsis siab heev (ntau puas K lossis ntau dua), nws tuaj yeem txiav txim siab tias qhov kev ua tau zoo tau txo qis lossis tau tawg thiab puas. Nco ntsoov tias qhov transistor no tsis muaj kev tiv thaiv. Txoj kev no tseem tuaj yeem siv rau kev sib xyaw ua ke. Nws yuav tsum raug sau tseg tias qhov ntsuas ntawm kev sib xyaw ua ke tuaj yeem tsuas yog muab piv nrog cov tsis muaj nyob hauv ib txwm muaj.
4. Cov kev sojntsuam ntawm cov tshuab multimeters zoo ib yam muaj qhov muaj peev xwm tiv taus siab, thiab cov neeg nyiam tuaj yeem ua tau ib khub ntawm kev sojntsuam lawv tus kheej; Txoj kev: Npaj ib lub xov tooj zoo tshaj plaws lossis ntau cov tub ntxhais tooj liab hlau ntawm ib lub 'meter', ib khub ntawm insulated clips (liab thiab dub), thiab ib khub txiv tsawb plugs (liab thiab dub) rau kev hais lus xov; Ib kawg ntawm cov hlau yog welded nrees rau ntawm lub clamp, thiab lwm qhov kawg yog correspondingly muab tso rau hauv lub txiv tsawb ntsaws; Ib khub cwj mem zoo yog qhov ua tau zoo.
