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Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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
Transcribed Image Text:28. A circuit with four light-emitting diodes (LEDs) P, Q, R and S is shown below.
Two LEDs are lit in this circuit. Which two LEDs are lit?
A P and Q
P and R
ABCD
с Q and R
Q and S
D
Bes
Your answer
Expert Solution
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- Question 2 If Vcc=9V, R1=R2%3D1,432 ohms, Beta=150, re'=9ohms, RL=474 ohms assume D1 and D2 are practical diodes. Compute the input resistance in ohms unit +Vcc R1 C3 D1 D2 C2 RL V R2arrow_forwardCalculate the equivalent resistances Rin of the following circuits. (The resistance value of the diodes in the conduction will be 0, the resistance value of the diodes in the insulation will be taken as infinity. R1=10ohmarrow_forward
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