Multatimeter yooj yim pom cov neeg ua hauj lwm muaj zog patentiometer sib cuag teeb meem
Thaum siv multipimeter los sim ib lub potentiometer, cov iav haum yuav tsum tau xaiv raws li tus nqi nominal, thiab cov nominal tsis kam ntsuas tus nqi. Cov txheej txheem yog los tso rau ntau qhov chaw tsim nyog ω txoj hauj lwm, txuas lub ntsuas ntsuas rau "1" xaus ntawm lub lauj kaub potentiometer, thiab rab koob yuav tsum taw tes rau cov ntsuas tsis kam. Yog tias rab koob nyob ntawm Infinity thiab tsis viav vias thiab tsis viav, nws qhia tau tias lub cev tiv thaiv kab mob ntawm cov ntsuas Potenti tau tawg Circuit Court. Yog hais tias tus pointer qhia yog tsis ruaj khov, nws qhia tau tias lub patentiometer muaj kev tiv tauj tsis zoo. Tom ntej no, ua raws cov editor kom paub ntau ntxiv txog cov txheej txheem kev ua haujlwm (raws li qhia hauv daim duab hauv qab no)
Kuaj xyuas yog tias lub caj npab txav mus los ntawm lub potentiometer yog qhov zoo sib cuag nrog lub resistor. Thaum ntsuas tus nqi tiv taus nrog tus nqi sib xyaw ua ke, tig lub potentiometer ncej thiab saib cov oscillation ntawm tus pointer. When measuring, set the multimeter to the resistance mode, connect one probe to the "2" end of the potentiometer's movable arm, and connect the other probe to the "1" or "3" end of the resistor body. Ntsuas cov tsis kam nqi ntawm "1", "2" lossis "2", "3" 3 xaus. Feem ntau, r 12+ r 23= r13. Nyob rau tib lub sijhawm, tig lub potentiometer ncej counterclockwise, tom qab ntawd raws sijhawm, thiab saib tus pointer ntawm multimeter. Ib tug li qub potentiometer thiab molitionatimeter tus pointer yuav tsum txav rov qab thiab yooj yim. Yog tias tus pointer txav tsis ncaj lossis jumps, nws qhia tau tias muaj qhov kev sib tiv tauj tsis zoo ntawm lub potentiometer caj npab thiab lub resistor.
Rau cov potentiometers nrog hloov chaw, nws tseem tsim nyog los tshawb xyuas seb tus hloov pauv ntawm lub lauj kaub Potentiometer yog qhov xwm txheej zoo. Siv hom kev tawm tsam ntawm motionateter, txuas ob qho kev hloov pauv "4" thiab "tig mus" hloov pauv "thiab" tig mus "hloov pauv, thiab saib cov pointer multience qhia. Thaum tus hloov pauv yog muab rau, tus pointer ntawm lub ntsuas yuav tsum taw tes rau qhov deb (nrog xoom tsis kam); Thaum hloov tau muab tua, tus pointer ntawm lub ntsuas yuav tsum taw tes rau qhov deb sab laug (nrog infinite tsis kam). Tuaj yeem sim ntau zaus kuaj ob peb zaug kom pom tias tus hloov pauv tau tsis zoo hu rau
Siv ib tug sib ntau sib piv rau ntsuas qhov tsis kam ntawm lub potentiometer yog 56.9K ω, uas yog muaj kev sib npaug ntawm 21.7K ω pom nyob hauv daim duab thiab tsis kam ntawm 35.2 ω pom.
Cov ntsiab lus tseem ceeb kom nco ntsoov:
Xaiv cov iav uas tsim nyog, txuas cov kev sim rau Terminal 1.3, ntsuas cov nominal nqi thaum ob qho kev tawm tsam, thiab sim seb tus hloov chaw puas yog qhov zoo. Nws yog qhov zoo kom tig rau xoom thiab kaw yog tias tsis yog.
