I What is the Maximum value of the Resistor R1, to ensure that the LEDS D1 and D2 are leasing light? 2 What is the value of the Resistor R1, to ensure that the LEDS D1 and D2 are working with meir nominal current? roblem #3 Siven the Circuit 3 D2 GREEN R1 D1 BAT1 RED D3

Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
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I need help with questions 2.1, 2.2, 3.1 and 3.2. The first page explains what you need to know.
ork%20%238%20(1).pdf
1 4
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Homework #8 – LED Circuits
NOTE: to solve the problems you will use the following assumption
1) A LED (disregarding the color) need at least If=5mA or more nsure
that the LED lights up
2) The standard value of the current for the nominal work of a LED
(disregarding the color) is 20 mA
3) These are the values of the Voltage Forward of the LED by colors.
This voltage ensure that the LED conducts and lights up. In this
exercise Vf will not depends on the current If (in real life Vf
changes but not significantly with the current)
a. Vf(RED) = 1.9 Volts
b. Vf(YELLOW) = 2.1 Volts
c. Vf(GREEN) = 2.3 Volts
d. Vf(BLUE) = 3.4 Volts
e. Vf(WHITE) = 3.9 Volts
Problem #1
Given the Circuit 1
R1
D1
BAT1
9V
RED-
MacBook Air
Transcribed Image Text:ork%20%238%20(1).pdf 1 4 100% Homework #8 – LED Circuits NOTE: to solve the problems you will use the following assumption 1) A LED (disregarding the color) need at least If=5mA or more nsure that the LED lights up 2) The standard value of the current for the nominal work of a LED (disregarding the color) is 20 mA 3) These are the values of the Voltage Forward of the LED by colors. This voltage ensure that the LED conducts and lights up. In this exercise Vf will not depends on the current If (in real life Vf changes but not significantly with the current) a. Vf(RED) = 1.9 Volts b. Vf(YELLOW) = 2.1 Volts c. Vf(GREEN) = 2.3 Volts d. Vf(BLUE) = 3.4 Volts e. Vf(WHITE) = 3.9 Volts Problem #1 Given the Circuit 1 R1 D1 BAT1 9V RED- MacBook Air
ads/Homework%20%238%20(1).pdf
214
100%
Given the Circuit 2
D2
GREEN
R1
D1
RED -
BAT1
Circuit 2
2.1 What is the Maximum value of the Resistor R1, to ensure that the LEDS D1 and D2 are
releasing light?
2.2 What is the value of the Resistor R1, to ensure that the LEDS D1 and D2 are working with
their nominal current?
Problem #3
Given the Circuit 3
R1
D2
GREEN
D1
BAT1
RED
D3
BLUE
Circuit 3
3.1 What is the Maximum value of the Resistor R1, to ensure that the LEDS D1, D2 and D3 are
releasing light?
3.2 What is the value of the Resistor R1, to ensure that the LEDS D1 D2 and D3 are working with
their nominal current?
MacBook Air
本
Transcribed Image Text:ads/Homework%20%238%20(1).pdf 214 100% Given the Circuit 2 D2 GREEN R1 D1 RED - BAT1 Circuit 2 2.1 What is the Maximum value of the Resistor R1, to ensure that the LEDS D1 and D2 are releasing light? 2.2 What is the value of the Resistor R1, to ensure that the LEDS D1 and D2 are working with their nominal current? Problem #3 Given the Circuit 3 R1 D2 GREEN D1 BAT1 RED D3 BLUE Circuit 3 3.1 What is the Maximum value of the Resistor R1, to ensure that the LEDS D1, D2 and D3 are releasing light? 3.2 What is the value of the Resistor R1, to ensure that the LEDS D1 D2 and D3 are working with their nominal current? MacBook Air 本
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