Momwe mungagwiritsire ntchito multimeter kwa dummies

Magalimoto amakono sangachite popanda zamagetsi; komanso, amangodzaza ndi ma magetsi ndi zida zamagetsi. Kuti muwone msanga zovuta m'mayendedwe amagetsi m'galimoto, mufunika chosowa ngati multimeter.

M'nkhaniyi, tikambirana zosintha kwambiri ndikuwunikanso mwatsatanetsatane momwe tingagwiritsire ntchito multimeter ya dummies, i.e. kwa iwo omwe sanagwiritsepo chipangizochi m'manja, koma akufuna kuti aphunzire.

Kanema momwe mungagwiritsire ntchito multimeter

Multimeter. Momwe mungagwiritsire ntchito multimeter. Woyesa. Malizitsani malangizo amomwe mungagwiritsire ntchito woyeserera.

Zolumikizira zazikulu ndi ntchito zama multimeter

Kuti timvetsetse zomwe zili pachiwopsezo, tipereka chithunzi chowonera cha multimeter ndikusanthula mitundu ndi zolumikizira.

Tiyeni tiyambe ndi zolumikizira komwe tingalumikizire mawaya. Waya wakuda wolumikizidwa ndi cholumikizira chotchedwa COM (COMMON, chomwe chimatanthawuza kumasulira). Waya wakuda nthawi zonse amalumikizidwa ndi cholumikizira ichi, mosiyana ndi chofiira, chomwe nthawi zambiri chimakhala ndi zolumikizira ziwiri zolumikizira:

• VRmA cholumikizira - chomwe chimagwiritsidwa ntchito kuyeza voteji, kukana ndi mafunde pamwamba pa 10 A (Amps);
• cholumikizira 10A - chomwe chimagwiritsidwa ntchito kuyeza mafunde mpaka 10 A.

Ntchito ndi magulu a multimeter

Kuzungulira pointer yapakati, mutha kuwona magawo omwe adalekanitsidwa ndi zolemba zoyera, tiyeni tiwaswebe aliwonse a iwo:

• DCV - (DC - mwachindunji panopa, V - voteji) pogwiritsa ntchito mtundu uwu, DC voteji amayezedwa. Ma volt ndi ma millivolts amawonetsedwa pamiyeso;
• ACV - (AC - alternating current, V - voltage) AC voltage imayesedwa moyenerera;
• DCA - (DC - molunjika panopa, A - Amps) kuyeza kwachindunji (kuchokera ku 200 microamp mpaka 200 milliamp kumasonyezedwa pa chipangizo);
• 10A - muyeso wosiyana wamtundu wokulirapo wolunjika, chifukwa chake ndikofunikira kukonzanso waya wofiyira ku cholumikizira chapamwamba;
•  hFE - transistor test mode;
• Omega - kukana kuyeza kosiyanasiyana.

Kuyeza kwa magetsi a Battery DC

Tiyeni tipereke chitsanzo chosonyeza momwe tingagwiritsire ntchito multimeter, yomwe, kuyeza DC yamagetsi a batri wamba.

Popeza poyamba timadziwa kuti magetsi a DC mu batri ali pafupifupi 1,5 V, titha kusintha nthawi yomweyo kukhala 20 V.

Zofunika! Ngati simukudziwa magetsi a DC pachida kapena chida choyezera, ndiye kuti nthawi zonse muyenera kuyika chosinthira pamtengo wokwanira womwe mukufuna ndikuchepetsa ngati kuli kofunikira kuti muchepetse cholakwikacho.

Tidayatsa njira yomwe tikufuna, pitani molunjika ku muyeso, gwiritsani ntchito kafukufuku wofiyira kumbali yabwino ya batri, ndi kafukufuku wakuda kumbali yolakwika - timayang'ana zotsatira pazenera (ziyenera kuwonetsa zotsatira za 1,4-) 1,6 V, kutengera momwe batire ilili).

Makhalidwe a kuyeza AC voteji

Tiyeni tiwone bwino zomwe muyenera kumvetsera ngati muyeza mpweya wa AC.

Musanagwire ntchito, onetsetsani kuti mwawona ma waya omwe alowetsedwa, chifukwa ngati, mukayesa zina, waya wofiira umalowetsedwa mu cholumikizira poyesa zamakono (10 cholumikizira), dera lalifupi lidzachitika, lomwe silofunika kwenikweni .

Kachiwiri, ngati simukudziwa ma voliyumu a AC, ndiye kuti mutembenuzire pamalo akewo.

Mwachitsanzo, m'malo apakhomo, timadziwa kuti magetsi azitsulo ndi zida zamagetsi ndi pafupifupi 220 V, motsatana, pachidacho mutha kukhazikitsa 500 V mosiyanasiyana pamtundu wa ACV.

Momwe mungayezere kutayikira kwaposachedwa mgalimoto yokhala ndi multimeter

Tiyeni tiwone momwe tingayezere kutayikira kwapompopompo mugalimoto pogwiritsa ntchito multimeter. Chotsani zamagetsi zonse pasadakhale ndikuchotsa kiyi pamagetsi oyatsira. Chotsatira, muyenera kutaya chosakira kuchokera kubatire (siyani malo osasinthika osasinthika). Tikuwonetsa multimeter pamiyeso yoyezera molunjika ya 10 A. Musaiwale kukonzanso waya wofiira kuti ukhale cholumikizira (chapamwamba, chofanana ndi 10 A). Timagwirizanitsa kafukufuku umodzi ndi osachiritsika pa waya wosadulidwa, ndipo chachiwiri ndikulakwitsa kwa batri.

Mukadikirira pang'ono kuti miyezo isayime kudumpha, muwona zomwe zikufunika kutayikira m'galimoto yanu.

Kodi kutayikira kovomerezeka ndi kotani

• Mtengo wovomerezeka wochepa ndi 15 mA;
• Mtengo wokwanira wotulutsira pakadali mgalimoto ndi 70 mA.

Ngati mtengo wanu wapamwamba udapitilira, ndiye kuti muyenera kupita kukasaka kutayikira. Zipangizo zamagetsi zilizonse mgalimoto zimatha kutulutsa.

Mfundo yofunikira pakufufuza ndikutulutsa ma fusewo mosinthana ndikuwona zomwe zimatuluka. Ngati mwachotsa fusesi ndi mtengo wotuluka pa chipangizocho sichinasinthe, ndiye kuti zonse zili bwino ndi chipangizo chomwe fuseyi ili ndi udindo. Ndipo ngati, mutachotsa, mtengowo unayamba kudumpha, ndiye kuti chinachake chalakwika ndi chipangizo chofanana.

Mafunso ndi Mayankho:

Momwe mungayesere voteji ndi multimeter? Njira yoyezera voteji imayikidwa, ndikuyika malire oyezera kwambiri (m'magalimoto, chizindikiro ichi ndi 20V), komanso ndikofunikira kusankha njira yoyezera DC.

Kodi Continuity imagwira ntchito bwanji pa Multimeter? Multimeter ili ndi gwero lamphamvu la munthu (chinsalucho chimayendetsedwa ndi batri). Pa gawo loyesedwa la mawaya, mphamvu yamtengo wapatali imapangidwa ndipo zopuma zimalembedwa (kaya kukhudzana pakati pa ma probes kutsekedwa kapena ayi).