Iko conductivity ye diode

Chinonyanya kukosha hunhu hwe diode ndeye unidirectional conductivity. Mudunhu, ikozvino inogona kungoyerera ichibva kune anode ye diode uye ichiyerera ichibuda mu cathode. Izvi zvinotevera kuyedza kuri nyore kuratidza kumberi uye kumashure maitiro eiyo diode.

1. Hunhu hwakanaka.

Mumagetsi emagetsi, kana anode ye diode yakabatana nepamusoro inogona kuguma uye iyo yakaipa electrode yakabatanidzwa kune yakaderera inogona kupera, diode ichashandurwa. Iyi nzira yekubatanidza inonzi kurerekera mberi. Izvo zvinofanirwa kucherechedzwa kuti kana iyo yekumberi voltage inoshandiswa kumigumo yese ye diode idiki kwazvo, iyo diode haigone kuvhurwa, uye kumberi ikozvino kuyerera kuburikidza ne diode haina kusimba. Chete kana kumberi kwemhepo kunosvika kune imwe kukosha (iyi kukosha inonzi “threshold voltage”, iyo germanium tube inenge 0.2V, uye iyo silicon chubhu inenge 0.6V), diode inogona kuvhurwa zvakananga. Mushure mekubatidza, voltage pa diode inoramba isina kushanduka (iyo germanium chubhu inenge 0.3V, iyo silicon chubhu inenge 0.7V), inodaidzwa kuti “forward voltage drop” ye diode.

2. Reverse maitiro.

Muchikamu chemagetsi, anode ye diode yakabatanidzwa kune yakaderera-inogoneka kuguma, uye iyo yakaipa electrode yakabatanidzwa kune yakakwirira-inogoneka kuguma. Panguva ino, inenge isina ikozvino inoyerera mu diode, uye diode iri kunze kwenyika. Iyi nzira yekubatanidza inonzi reverse bias. Kana iyo diode iine reverse-rusaruro, pachange paine isina kusimba reverse ikozvino inoyerera kuburikidza ne diode, iyo inonzi kuvuza ikozvino. Kana iyo reverse voltage pa diode ichiwedzera kune imwe kukosha, iyo reverse ikozvino inowedzera zvakanyanya, uye diode inorasikirwa yayo unidirectional conductivity. Iyi nyika inonzi diode breakdown.