Maitiro ekushandisa multimeter kuona yakakanganisika LED Bead?
LED yekuvhenekesa bead kazhinji inotora yakatevedzana uye yakafanana kubatana. Kana bhero remwenje re LED rakuvadzwa, chimiro chekukanganisa ndechekuti kupenya hakuna kukwana. Kune akakuvadzwa mwenje mabhero e LED mumutsara uye mitsara yakafanana, nzira dzinotevera dzinogona kushandiswa kuona.
Kutonga kana chakanaka kana chakaipa:
(1) Multimeter yekuona uye nzira yekutonga. Sezvo bhero remwenje re LED rine hunhu hwe diode, rinogona kuwonekwa kana kutongwa nekushandisa dijitari multimeter diode block kana pointer mhando multimeter R × 1 block mumugwagwa kana dunhu rakavhurika. Kana pasina dambudziko nebhedhi remwenje we LED, bheji remwenje re LED rinovhenekera kana raona. Kana iyo yakaonekwa mwenje ye LED bead isina diode maitiro uye isingabudise diki nyeredzi kuvhenekera, inozotongwa kuti yakakuvadzwa.
(2) Mutoo wekutonga wakafanana. Kune mamwe mabheji emwenje e LED achembera, kushandiswa kwe multimeter yekuona kunogona kazhinji kuona iyo micro-nyeredzi kuvhenekesa, asi zvakadaro kusati kwakwana kupenya mushure memagetsi. Panyaya iyi, nzira yakafanana inogona kushandiswa kutsvaga kuchembera mwenje we LED mabheji. Tora girobhu re3W semuenzaniso. Nzira chaiyo ndeyotevera.
(3) LED parallel kutsunga nzira. Uchishandisa 1W LED inoshanda zvakanaka, pini yega yega inotengeswa newaya pfupi semwenje wekuona, uye yobva yashandiswa kupfupisa-yega yega mwenje mwenje we LED mugirobhu. Kana yangopfupikiswa kuita bhedhi remwenje we LED, 3W Kupenya kwegirobhu kuchawedzera zvakanyanya, uye girobhu re LED rakapfupikiswa ndiro bhedhi remwenje re LED. Mushure mekutsiva iyo itsva, kukanganisa kunogona kubviswa.
(4) Wire shorting nzira. Kana pasina yakadaro yakanaka LED panguva ino, iwe unogona zvakare kushandisa mapfupi mamagumo ewaya pfupi kupfupi-kutenderera yega yega girobhu re LED mugirobhu. Kana yangopfupikiswa kune imwe girobhu re LED, kupenya kwe 3W girobhu kuchawedzera zvakanyanya. Iro bhedhi remwenje re LED iro rakapfupikiswa ndeyechembera yemwenje ye LED bead. Mushure mekutsiva iyo itsva, kukanganisa kunogona kubviswa. Kana pasina chitsva chekuwedzera chekuchinja panguva, iwe unogona zvakare kupfupisa-kupfupika-yekuchembera mwenje we LED bead kumigumo yese. Kana wangotenga chinhu chitsva, unofanira kuchitsiva nenguva.