EE 230 Lecture 28 Spring 2010

# EE 230 Lecture 28 - EE 230 Lecture 28 Nonlinear Circuits using Diodes Rectifiers Precision Rectifiers Nonlinear function generators Quiz 18 If a

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EE 230 Lecture 28 Nonlinear Circuits using Diodes Rectifiers Precision Rectifiers Nonlinear function generators

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Quiz 18 If a diode has a value of I S =1E-14A and the diode voltage is .65V, what will be the diode current if operating at T=300K? I d =? 0.65V
And the number is ? 1 3 8 4 6 7 5 2 9

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And the number is ? 1 3 8 4 6 7 5 2 9 3
Quiz 18 If a diode has a value of I S =1E-14A and the diode voltage is .65V, what will be the diode current if operating at T=300K? I d =? 0.65V 1 e I I t d V V S d 800uA 8E10 14 - 1E e 14 - 1E I 5 8.63E 300 0.65 d Solution:

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The Real Electronics World Resistive Networks Passive Filters (RLC Networks) Waveform Generators Linear Circuits Nonlinear Circuits Comparators Nonlinear Amplifiers Linearized Nonlinear Circuits (small signal model) Sensor Interfaces Digital to Analog Converters (DAC) Analog to Digital Converters (ADC) Amplifiers (Dependent Sources) Waveform Generators All Logic Circuits MOSFET Diode BJT Review from Last Time:
The Diode I D V D Anode Cathode n-type p-type Anode Cathode Review from Last Time:

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Types of Diodes V d I d I d V d I d V d V d I d V d I d V d I d V d I d V d I d pn junction diodes Metal-semiconductor junction diodes Signal or Rectifier Pin or Photo Light Emitting LED Laser Diode Zener Varactor or Varicap Schottky Barrier V d I d Review from Last Time:
0 0 DD I 0 if V V if I 0 “OFF” “ON” The Ideal Diode I D V D I I D V D “ON” “OFF” I D >0 V D ≤0 Valid for Review from Last Time:

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Diode Characteristics 0 0.002 0.004 0.006 0.008 0.01 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Vd (volts) Id (amps) Widely Used Piecewise Linear Model 1 e I I t d V V S d Review from Last Time:
Diode Characteristics 0 0.002 0.004 0.006 0.008 0.01 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Vd (volts) Id (amps) 0 I 0.6V V 0.6V V 0 I d d d d 1 e I I t d V V S d More accurate pn junction diode model: Review from Last Time:

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0 I 0.6V V 0.6V V 0 I d d d d 1 e I I t d V V S d Piecewise Linear Model V d I d 0.6V A A C C Off State On State Equivalent Circuit V d I d A C A more accurate approximation to the diode equation Review from Last Time:
V IN R I D V D V OUT I Diode rectifier circuit V IN t V OUT t If V IN =V M sinωt Serves as a rectifier – very useful function !

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## This note was uploaded on 02/01/2012 for the course EE 230 taught by Professor Mina during the Fall '08 term at Iowa State.

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EE 230 Lecture 28 - EE 230 Lecture 28 Nonlinear Circuits using Diodes Rectifiers Precision Rectifiers Nonlinear function generators Quiz 18 If a

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