Question
Download Solution PDFFor which of the following diodes when the voltage is increased the current flowing through it decreases?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Tunnel Diode:
- Symbol:
- It is a highly doped PN Junction diode, used for low-voltage high-frequency switching applications.
- It works on the tunneling principle.
- It has a high charge carrier velocity.
- When compared to a normal p-n junction diode, the tunnel diode has a narrow depletion width.
- In normal forward-biased operation, it exhibits the “Negative resistance region” as shown:
- The negative differential resistance in their operation, allows them to be used as oscillators, amplifiers, and switching circuits.
- Their low capacitance allows them to function at microwave frequencies.
- Microwave frequencies range between 109 Hz (1 GHz) to 1000 GHz
- Tunnel diodes are not good rectifiers, as they have relatively high leakage current when reverse biased.
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