1. Using the chart above, find an appropriate resistor to each series circuit scenario below, assuming we want the current to run at 20mA: a) 9V battery, 1 Blue LED b) 9V battery, 1 Red LED c) 9V battery, 1 Green LED d) 9V battery, 2 Yellow LEDs e) 9V battery, 1 Blue and 1 Red LED
1. Using the chart above, find an appropriate resistor to each series circuit scenario below, assuming we want the current to run at 20mA: a) 9V battery, 1 Blue LED b) 9V battery, 1 Red LED c) 9V battery, 1 Green LED d) 9V battery, 2 Yellow LEDs e) 9V battery, 1 Blue and 1 Red LED
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Please review the following images.

Transcribed Image Text:For LEDs, these can be taken as general numbers:
Typical LED Characteristics
Semiconductor
Material
GaAs
GaAsP
GaAsP:N
AIGaP
SIC
GalnN
Wavelength
850-940nm
605-620nm
585-595nm
550-570nm
430-505nm
450nm
Colour
Infra-Red
Red
Amber
Yellow
Green
Blue
White
VF @ 20mA
1.2v
2.0v
2.2v
3.5v
3.6v
4.0v

Transcribed Image Text:1. Using the chart above, find an appropriate resistor to each series circuit scenario below,
assuming we want the current to run at 20mA:
a) 9V battery, 1 Blue LED
b) 9V battery, 1 Red LED
c) 9V battery, 1 Green LED
d) 9V battery, 2 Yellow LEDs
e) 9V battery, 1 Blue and 1 Red LED
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