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junction breakdown and tunnel diode 특징

저작시기 2009.01 |등록일 2010.02.06 파워포인트파일MS 파워포인트 (ppt) | 15페이지 | 가격 700원

소개글

junction breakdown and tunnel diode 특징

목차

Junction breakdown
Zener breakdown
Avalanche breakdown

본문내용

Junction breakdown
The reverse-bias voltage may not increase without limit; at some particular voltage, the reverse-bias current will increase rapidly.
The applied voltage at this point is called the ‘breakdown voltage’.

Physical mechanism

1. Zener effect
2. Avalanche effect

*Zener breakdown
Depletion layer controls reverse-bias current by doping impurities.

In case of high doping,
-> reverse-bias current increase.
In case of low doping,
-> reverse-bias current decrease
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