Difference between revisions of "Lab 9 TF EIM"

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=Clipping Circuit=
 
=Clipping Circuit=
 
#Construct the circuit shown below.
 
#Construct the circuit shown below.
#Use a 1 kHz sine wave generator to drive the circuit so <math>V_a = V_0 cos(2 \pi \nu t)</math> where <math>V_0 = 0.1</math> V and <math> \nu</math>  = 1kHz.
+
#Use a 1 kHz sine wave generator to drive the circuit so <math>V_a = V_0 cos(2 \pi \nu t)</math> where <math>V_0 = 0.1</math> V and <math> \nu</math>  = 1kHz. (10 pnts)
 
#Based on your observations using a scope, sketch the voltage at points A & B as a function of time.
 
#Based on your observations using a scope, sketch the voltage at points A & B as a function of time.
#Do another sketch for<math> V_0</math> = 1.0 V and another for 10.0 V.
+
#Do another sketch for<math> V_0</math> = 1.0 V and another for 10.0 V. (20 pnts)
  
 
= Differentiating Circuit with clipping=
 
= Differentiating Circuit with clipping=

Revision as of 05:52, 27 October 2010

Lab 9: Diode Circuits

Clipping Circuit

  1. Construct the circuit shown below.
  2. Use a 1 kHz sine wave generator to drive the circuit so [math]V_a = V_0 cos(2 \pi \nu t)[/math] where [math]V_0 = 0.1[/math] V and [math] \nu[/math] = 1kHz. (10 pnts)
  3. Based on your observations using a scope, sketch the voltage at points A & B as a function of time.
  4. Do another sketch for[math] V_0[/math] = 1.0 V and another for 10.0 V. (20 pnts)

Differentiating Circuit with clipping

  1. Construct the circuit below.
  2. Select [math]R_1[/math] and [math]R_2[/math] such that the current from the +5V DC source is 1.0 mA and the DC voltage at [math]V_b[/math] is 3 V.
  3. Select a capacitor [math](C_1)[/math] to form a differentiating circuit for the pulse from the signal generator. Hint: [math]R_{12}C_1 \ll \tau[/math].
  4. plot [math]V_A[/math] and [math]V_B[/math] as a function of time using your scope observations.
  5. Now add the diode circuit from part 1 to prevent V_B from rising above +5 V.
  6. plot [math]V_A[/math] and [math]V_B[/math] as a function of time with the diode circuit you added using your scope observations.

Questions

  1. Explain your results in parts 1 & 2 in terms of the diode turn-on voltage.

Forest_Electronic_Instrumentation_and_Measurement