Chizindikiro cha Multimeter resistance (Buku ndi zithunzi)

Multimeter ndi chinthu chofunikira pakuwunika zida zamagetsi. Ndikofunikira kudziwa chizindikiro cha Om kuti mugwiritse ntchito moyenera. Anthu amagetsi amadziwa kuwerenga ma multimeter ndi zizindikiro zawo, koma Joe/Jane wamba angafunike thandizo, ndichifukwa chake tili pano.

Pali maupangiri ndi zinthu zingapo zowerengera magawo monga ohms, capacitance, volts ndi ma milliamp, ndipo aliyense akhoza kudziwa kuwerenga kwa mita.

Kuti muwerenge chizindikiro cha kukana cha multimeter, muyenera kukhala ndi chidziwitso chofunikira voteji, kukana ndi kupitiriza kuwerenga; lingaliro la kuyesa kwa diode ndi capacitance, mtundu wamanja ndi magalimoto, ndi zolumikizira ndi mabatani.

Zizindikiro za Multimeter zomwe muyenera kudziwa

Pano tikambirana za voltage, kukana ndi kupitiriza.

• Mphamvu yamagetsi imathandizira kuyeza voteji yolunjika (DC) ndi ma alternating current (AC). Mzere wa wavy pamwamba pa V umasonyeza mphamvu ya AC. Mzere wa madontho ndi wolimba V umayimira magetsi a DC. mV yokhala ndi madontho amodzi ndi mzere umodzi wa wavy zikutanthauza mamilivolti AC kapena DC.
• Zomwe zilipo zitha kukhala AC ​​kapena DC ndipo zimayesedwa mu ma ampere. Mzere wa wavy umayimira AC. A wokhala ndi madontho amodzi ndi mzere umodzi wolimba akuwonetsa DC.(1)
• Multimeter imagwiritsidwanso ntchito kuyesa dera lotseguka mumayendedwe amagetsi. Pali zotsatira ziwiri zoyezera kukana. Mumodzi, dera limakhala lotseguka ndipo mita ikuwonetsa kukana kopanda malire. Wina amawerenga motsekedwa, momwe dera limawerengera zero ndikutseka. Nthawi zina, mita imalira pambuyo pozindikira kupitiliza. (2)

Mayeso a diode ndi capacitance

Ntchito yoyeserera ya diode imatiuza ngati diode ikugwira ntchito kapena ayi. Diode ndi gawo lamagetsi lomwe limathandiza kusintha AC kukhala DC. Kuyesa kwa capacitance kumaphatikizapo ma capacitors, omwe ndi zida zosungiramo ndalama, ndi mita yomwe imayesa mtengo. Multimeter iliyonse ili ndi mawaya awiri ndi mitundu inayi ya zolumikizira zomwe mungathe kulumikiza mawaya. Zolumikizira zinayi zikuphatikiza cholumikizira cha COM, cholumikizira, mAOm Jack, ndi mamA cholumikizira.

Pamanja ndi auto range

Mitundu iwiri ya multimeter ingagwiritsidwe ntchito. Imodzi ndi multimeter ya analogi ndipo ina ndi multimeter ya digito. Multimeter ya analogi imaphatikizapo makonda osiyanasiyana ndipo ili ndi cholozera mkati. Sichingagwiritsidwe ntchito kuyeza miyeso yovuta chifukwa cholozera sichingapatuka pamitundu yayikulu. Cholozeracho chidzapatuka mpaka pamtunda wake patali pang'ono ndipo muyeso sudzapitilira mulingo.

DMM ili ndi makonda angapo omwe angasankhidwe pogwiritsa ntchito kuyimba. Mamita amasankha okha mtunduwo popeza alibe makonda osiyanasiyana. Ma multimeter a automatic amachita bwino kwambiri kuposa ma multimeter amanja.

ayamikira

(1) Chilamulo cha Ohm - https://electronics.koncon.nl/ohmslaw/

(2) Zambiri zamamita - https://www.electrical4u.com/voltage-or-electric-potential-difference/