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Lab #1 - Diodes
12

Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

Dec 20, 2015

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Page 1: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

Lab #1 - Diodes

Page 2: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC2

Diodes

/ 1qV nkTsI I e

ln 1s

nkT IV

q I

I

VReverse saturation region

Forward conduction region

Von

Vbr

I

V

Forward conduction region

Von

Vbr

Real Diode Characteristic Simple Approximation

V

I

Page 3: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC3

LEDs

Reflector

LED symbol

Page 4: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC4

Diode Biasing

Vd

1 kΩ Vs

A

V

Id

12 V Vd

R

Id

12 V Vd

R

Id

Page 5: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC5

Series Diodes

470 Ω

Vs

5 V Vout1 kΩ12 VVout

1 kΩ

12 VVout

1 kΩ

RL

Page 6: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC6

Diodes in Parallel

Vs

R

RVsR

Vs

R

GreenRedGreen

Red

Page 7: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC7

Limiters/Rectifiers

Vin

Vout

tVoutVin 10 kΩ

Vout

Vin

10 kΩ

VoutVin 10 kΩ

CL AC in

Bright

Off

DimLamp

Page 8: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC8

Limiters

Vin

10 kΩ

Vout Vin

1 kΩ

Vout

Page 9: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC9

Diode Logic

Vout

470 Ω

V1

V2 Vout

470 Ω

V1

V2

+5 V

+5 V

470 Ω

Page 10: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC10

Zener Diodes

Vz

Iz

Iz

Vz

10 6.8 3.3

1N746A1N754A1N758A

Vin

10 kΩ

Vout

Page 11: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC11

Voltage Multipliers

1 μF

Vin

Vout

100 kΩ1 μF

Vin

Vout

Vin

Vout

Page 12: Lab #1 - Diodes. © Bob York Back to TOC 2 Diodes I V Reverse saturation region Forward conduction region V on V br I V Forward conduction region V on.

© Bob York Back to TOC12

Scope Grid