स्वतन्त्र विश्वकोश, नेपाली विकिपिडियाबाट
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Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left).
Figure 2: Various semiconductor diodes. Bottom: A bridge rectifier. In most diodes, a white or black painted band identifies the cathode terminal, that is, the terminal that conventional current flows out of when the diode is conducting.
Figure 3: Structure of a vacuum tube diode. The filament may be bare, or more commonly (as shown here), embedded within and insulated from an enclosing cathode

डायोड (En:diode) दुई ओटा टर्मिनल भएको इलोक्ट्रोनिक्स कम्पोनेन्ट हो ।