Voltage qhia: Zoo thiab tsis zoo

Compact thiab kuj yooj yim ntsuas tsim rau nrig txog kev pom kev tswj ntawm lub voltage ntawm lub AC Circuit Court, hu ua "voltage tester." Nws siv yog advisable nyob rau hauv cov neeg mob thaum muaj yuav tsis muaj rau leej ntsuam, koj cia li yuav tsum paub txog cov muaj / tsis tuaj kawm ntawv ntawm voltage. Lawv ua ib qho hauj lwm zoo heev nrog lawv ua hauj lwm nyob rau hauv lub chaw ua hauj lwm thiab tom tsev, zoo heev txo lub sij hawm ntawm lub kho ua hauj lwm. Nws yog tsis yooj yim sua nyob rau hauv cov teeb meem no, thiab tsis nco qab txog kev ruaj ntseg. Xws li feem ntau txuag ib tug neeg lub neej.

Muaj ntau ntau yam kev ntsuas ntawm kev hloov kho, tab sis lawv cov hauj lwm rau cov ntsiab cai tib yam. Raws li ib qho piv txwv, xav txog ib tug qauv tswvyim ntawm ib tug yooj yim taw qhia. Nws muaj xws li ib tug tsawg-tam sim no neon teeb thiab ib limiting resistor kev cob cog rua nyob rau hauv series. Tag nrho cov tswvyim yog insulated. Ib kawg ntawm tus dais kev txhawj xeeb tus neeg xyuas pib nyob rau hauv voltage. Yuav kom neon teeb zes, nws yog tsim nyog los tsim ib tug tej zaum txawv. Qhov no yuav ua tau los ntawm kov tau cov tes ntawm lub thib ob kawg ntawm tus dais. Siv ib tug voltage qhov taw qhia, koj muaj peev xwm sai sai tshawb, piv txwv li, cov kev tswj Circuit Court relay Circuit Court thiab nrhiav kev txhaum. Nws yuav tsum raug borne nyob rau hauv lub siab hais tias yog hais tias tus Circuit Court powered los ntawm ib tug AC fais fab qhov chaw nrog ib tug uas tsis yog-cais nruab nrab, qhov taw qhia yuav teeb li tsuas yog thaum ua hauj lwm nrog theem neeg xyuas pib.

Qhov saum toj no piav teeb voltage muaj ib tug loj disadvantage. Nws yog tsis muaj kev nyab xeeb nyob rau hauv lub chaw ua hauj lwm, thiab kev puas tsuaj-limiting kuj koj yuav tau txais ib tug hluav taws xob poob siab. yog tus tov li manufactured rau lub hom phiaj no kev lag luam. Lawv ua hauj lwm nyob rau hauv tib lub ntsiab cai, tab sis lub peev xwm sib txawv nyob rau hauv cov ntaub ntawv no yog generated los ntawm kov tau cov thib ob yog ib feem ntawm lub twj paj nruag rau xoom los yog theem neeg xyuas pib. Lawv muaj xws li, ntsig txog, ntawm ob qhov chaw, tab sis thaum ntsuas koj tsis txhob kov cov kev sib cuag feem ntawm tsab xov xwm.

Tej voltage testers heev compact thiab yooj yim rau siv. Nws yuav tsum raug sau tseg hais tias lawv yog txhim khu kev qha thiab yooj yim rau koj khiav lag luam. Txawv seev ntsuas ntau yam. Muaj ntsuas pas nrig, uas tej zaum yuav qhia hauv lub xub ntiag ntawm high voltage saum toj no 1000 volts.

Lub active ib feem ntawm lub ntaus ntawv nyob rau hauv lub kawg ntawm tus pas nrig, uas yuav ua tau ob peb meters ntev. Nws tag nrho cov nyob rau hauv lub nyob voltage, tus uas cov chaw ua hauj lwm yog nws. Thaum ua hauj lwm nrog xws li ib tug ntaus ntawv yuav tsum tau hnav insulated hnab looj tes. Ntsuas nyob rau hauv xws circuits tsim zoo-kawm ua hauj lwm.

Tom qab qhov kawg ntawm lub ntsuas pas nrig kov tus neeg xyuas pib, qhov taw qhia yuav qhia hauv lub xub ntiag los yog tsis tuaj kawm ntawv ntawm voltage. Nws theem yuav kwv yees los ntawm sau tshwj xeeb teev, uas yog nyob ncaj qha rau hauv cov 'meter'. Qhov no thiaj li hu ua cov voltage qhov taw qhia, uas tso cai rau koj mus visually ntsuam xyuas lub peev xwm ntawm Circuit Court nyob rau hauv kev xeem.

Raws li koj tau pom, kev nyuaj siab ntsuas yog lug siv nyob rau hauv lub chaw ua hauj lwm thiab tom tsev. Lawv varied nyob rau hauv lawv tsim thiab them rau ntau ntau yam ntawm ntsuas voltage.