Lab 14 TF EIM - Revision history

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 .)Calculate all the R and C values to use in the circuit such that
-:a. Try <math>R_E \approx 220 \Omega</math> and  <math>I_C \approx 100 \mu A</math>
+:a. Try <math>R_E \approx 220 \Omega</math>
 :b. <math>I_C > 0.5</math> mA DC with no input signal
 :c. <math>V_{CE} \approx V_{CC}/2 > 2</math> V

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 .)Calculate all the R and C values to use in the circuit such that
-:a. Try <math>R_B \approx 220 \Omega</math> and  <math>I_C \approx 100 \mu A</math>
+:a. Try <math>R_E \approx 220 \Omega</math> and  <math>I_C \approx 100 \mu A</math>
 :b. <math>I_C > 0.5</math> mA DC with no input signal
 :c. <math>V_{CE} \approx V_{CC}/2 > 2</math> V

← Older revision		Revision as of 04:23, 16 March 2011
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	7.)Measure <math>R_{in}</math> and <math>R_{out}</math> at about 1 kHz and compare to the theoretical value.(10 pnts)		7.)Measure <math>R_{in}</math> and <math>R_{out}</math> at about 1 kHz and compare to the theoretical value.(10 pnts)
		+
		+	How do you do this? Add resistor in front of <math>C_1</math> which you vary to determine <math>R_{in}</math> and then do a similar thing for <math>R_{out}</math> except the variable reistor goes from <math>C_2</math> to ground.

	8.)Measure <math>A_v</math> and <math>R_{in}</math> as a function of frequency with <math>C_E</math> removed.(10 pnts)		8.)Measure <math>A_v</math> and <math>R_{in}</math> as a function of frequency with <math>C_E</math> removed.(10 pnts)

@@ Line 8: / Line 8: @@
 .)Calculate all the R and C values to use in the circuit such that
-:a. Try <math>R_B \approx 220 \Omega</math>
+:a. Try <math>R_B \approx 220 \Omega</math> and  <math>I_C \approx 100 \mu A</math>
 :b. <math>I_C > 0.5</math> mA DC with no input signal
 :c. <math>V_{CE} \approx V_{CC}/2 > 2</math> V

@@ Line 8: / Line 8: @@
 .)Calculate all the R and C values to use in the circuit such that
-:a. <math>I_C > 0.5</math> mA DC with no input signal
+:a. Try <math>R_B \approx 220 \Omega</math>
-:b. <math>V_{CE} \approx V_{CC}/2 > 2</math> V
+:b. <math>I_C > 0.5</math> mA DC with no input signal
-:c. <math>V_{CC} < V_{CE}(max)</math> to prevent burnout
+:c. <math>V_{CE} \approx V_{CC}/2 > 2</math> V
-:d. <math>V_{BE} \approx 0.6 V</math>
+:d. <math>V_{CC} < V_{CE}(max)</math> to prevent burnout
-:e. <math>I_D \approx 10 I_B < 1</math> mA
+:e. <math>V_{BE} \approx 0.6 V</math>
 .)Draw a load line using the <math>I_{C}</math> -vs- <math>I_{CE}</math> from the previous lab 13.  Record the value of <math>h_{FE}</math> or <math>\beta</math>.

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 .)Draw a load line using the <math>I_{C}</math> -vs- <math>I_{CE}</math> from the previous lab 13.  Record the value of <math>h_{FE}</math> or <math>\beta</math>.
-.)Set a DC operating point I^{\prime}_C so it will amplify the input pulse given to you.  Some of you will have sinusoidal pulses others will have positive or negative only pulses.
+.)Set a DC operating point <math>I^{\prime}_C</math> so it will amplify the input pulse given to you.  Some of you will have sinusoidal pulses others will have positive or negative only pulses.
 .)Measure all DC voltages in the circuit and compare with the predicted values.(10 pnts)

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 .)Construct the common emitter amplifier circuit below according to your type of emitter.
-[[File:TF_EIM_Lab14a.png | 200 px]]
+[[File:TF_EIM_Lab14a.png | 400 px]]
 .)Calculate all the R and C values to use in the circuit such that