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Author Question: A collector feedback bias amplifier circuit with a VCC of 15 V has an hFE of 200. The collector ... (Read 67 times)

maychende

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on: Jul 28, 2018
A collector feedback bias amplifier circuit with a VCC of 15 V has an hFE of 200. The collector resistor (RC) is rated at 1.2 k and the base resistor (RB) has a value of 220 k. The circuit's base current (IB) is
 
  A) 59.6 A B) 31 A C) 65 A D) 32.6 A

Question 2

An LED and its current-limiting resistor are connected to a driving circuit with a peak output of 9 V. The LED has a forward voltage (VF) rating of 1.6 to 2.2 V and a forward current (IF) rating of 15 mA (maximum). Using the 80 guideline, what is the smallest standard-value current limiting resistor needed in the circuit?
 
  A) 720  B) 520  C) 680  D) 570


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SAUXC

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

C


maychende

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Reply #2 on: Jul 28, 2018
TY


SAUXC

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Reply #3 on: Jul 28, 2018
You're welcome


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