연세대 전기전자 기초실험 09년도 레포트 결과 4 Various Diodes and its Properties
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- 2009.12.17
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- 2009.05
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소개글
연세대학교 전기전자 기초실험 09년도 A+ 레포트
목차
1. junction diode
2. zener diode
토 의 사 항
5. Reference
본문내용
1. junction diode
① What are the other applications of diode in electrical devices.
1) Half wave rectifier
• The (ideal) diode conducts for vi >0 and since Rf =0 , V0 is almost Vi
• For vi < 0 the (ideal) diode is an open circuit (it doesn’t conduct) and V0 is 0.
2) Diode Clipper Circuits
• When the diode is off the output of these circuits resembles a voltage divider
• If RS << RL , The level at which the signal is clipped can be adjusted by adding a d.c. bias voltage in series with the diode.
② Using `approximation 3` in fig 4-3, draw equivalent circuit of junction diode..
③ Explain the reason why there is difference between measured value and calculated value in table 4-2.
We can calculate the value of the resister by using gradiant btween two point is inverse of resistance value. But that gradiant is expotential function at the real diode. So it can be error in there. The value of the resistance is different by the value of current and voltage. Specially, at 0.6~0.8 voltage, there are much change of gradiant that have much difference between measured value and calculated value.
참고 자료
①『전기전자기초실험』, 2006, 김재석 외 4명 공저.
②『ELECTRIC CURCUIT』6th edition , 2008, RICHARD C.DORF.
③ http://en.wikipedia.org/ (위키백과사전)