Selecting the diode and the value of the capacitor requires some care. The smaller the PN junction, the smaller the reverse current and the longer the discharging time. Periods longer than a few ...

Any PN junction diode can be used as a variable capacitor in reverse biased mode, as well as in the forward biased mode before the knee voltage. The capacitance is usually very small as the junction ...

Last week we covered diodes, specifically thermionic and PN junction diodes. But oh, there are more; and they’re special! One of the the most commonly used ‘specialty’ diode would have to be ...

2nd course in the Semiconductor Devices SpecializationInstructor: Wounjhang Park, Ph.D., ProfessorThis course presents in-depth discussion and analysis of pn junction and metal-semiconductor contacts ...

Schematic Diagram of a P-N Junction Diode: The diagram illustrates the basic structure of a p-n junction diode with p-type silicon on one side, n-type silicon on the other, and the anode and cathode ...

In fact, the junction turns into a few-picofarad capacitor, and in some cases may even be used as such. As great as they may be, PN junctions are lossy little things.