The conductivity wa diode

Chikhalidwe chofunikira kwambiri cha diode ndi mawonekedwe ake a unidirectional. Pozungulira, madzi amatha kungoyenda kuchokera ku anode ya diode ndikutuluka mu cathode. Zotsatirazi ndikuyesa kosavuta kufotokoza za kutsogolo ndi kumbuyo kwa diode.

1. Makhalidwe abwino.

M’mabwalo amagetsi, ngati anode ya diode ilumikizidwa ku mapeto apamwamba kwambiri ndipo electrode yolakwika imagwirizanitsidwa ndi mapeto otsika, diode idzatsegulidwa. Njira yolumikizira iyi imatchedwa kukondera kutsogolo. Tiyenera kukumbukira kuti pamene magetsi akutsogolo omwe amagwiritsidwa ntchito kumbali zonse ziwiri za diode ndi ochepa kwambiri, diode akadali sangathe kuyatsa, ndipo kutsogolo komwe kumadutsa mu diode kumakhala kofooka kwambiri. Pokhapokha pamene magetsi akutsogolo afika pamtengo wina (mtengowu umatchedwa “voltage voltage”, chubu cha germanium ndi pafupifupi 0.2V, ndi chubu la silicon ndi pafupifupi 0.6V), diode ikhoza kutsegulidwa mwachindunji. Mukayatsa, mphamvu yodutsa pa diode imakhalabe yosasinthika (chubu la germanium ndi pafupifupi 0.3V, chubu la silicon ndi pafupifupi 0.7V), lomwe limatchedwa “kutsika kwamagetsi” kwa diode.

2. Makhalidwe osintha.

Mu dera lamagetsi, anode ya diode imagwirizanitsidwa ndi mapeto otsika, ndipo electrode yolakwika imagwirizanitsidwa ndi mapeto apamwamba kwambiri. Panthawiyi, pafupifupi palibe madzi omwe akuyenda mu diode, ndipo diode ili kunja. Njira yolumikizira iyi imatchedwa reverse bias. Pamene diode ili ndi tsankho, padzakhalabe mpweya wofooka wodutsa mu diode, womwe umatchedwa leakage current. Pamene voteji ya m’mbuyo pa diode ikukwera kufika pamtengo wina, mphamvu yowonongeka idzawonjezeka kwambiri, ndipo diode idzataya mphamvu yake ya unidirectional. Izi zimatchedwa kuwonongeka kwa diode.