ith 10K oh
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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Question
The brightness adjustment of a low-current lamp operating with a 12 volt supply voltage is made using a NPN transistor as follows. When the potentiometer with 10K ohm value is at its maximum value, calculate the voltages at A, B, C and E points and fill in the table below. Indicate if the LED is off or on. Take the Vbe voltage as 0.7 volts.
Transcribed Image Text:2) 12Volt besleme gerilimiyle çalışan düşük akımlı bir lambanın parlaklık ayarı aşağıdaki şekilde
NPN transistör kullanılarak yapılmaktadır. 10KO değerindeki potansiyometre maksimum değerde
iken A,B,C ve E noktalarındaki gelirilimleri hesaplayınız ve aşağıdaki tabloyu doldurunuz. LED'in sönük
ya da yanık olduğunu belirtiniz. VBE gerilimini 0.7 volt olarak alınız.
VEE 12V
O 12V
10K
100
10K
Potansiyometre maksimum iken
A
LED durumu
Transcribed Image Text:2) 12Volt besleme gerilimiyle çalışan düşük akımlı bir lambanın parlaklık ayarı aşağıdaki şekilde
NPN transistör kullanılarak yapılmaktadır. 10KO değerindeki potansiyometre maksimum değerde
iken A,B,C ve E noktalarındaki gelirilimleri hesaplayınız ve aşağıdaki tabloyu doldurunuz. LED'in sönük
ya da yanık olduğunu belirtiniz. VBE gerilimini 0.7 volt olarak alınız.
VEE 12V
O 12V
10K
100
10K
Potansiyometre maksimum iken
A
LED durumu
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