Lab 9 TF EIM

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Lab 9: Diode Circuits

Clipping Circuit

1.) Construct the circuit shown below using a silicon diode.

TF EIM Lab9.png

2.) Use a sine wave generator to drive the circuit so Vin=V0cos(2πνt) where V0=0.1 V and ν = 1kHz. (20 pnts)

3.)Based on your observations using a oscilloscope, sketch the voltages Vin and Vout as a function of time.

4.)Do another sketch forV0 = 1.0 V and another for 10.0 V. (20 pnts)

Differentiating Circuit with clipping

  1. Construct the circuit below.

TF EIM Lab9a.png

  1. Select R1 and R2 such that the current from the +5V DC source is 1.0 mA and the DC voltage at Vb is 3 V.
  2. Select a capacitor (C1) to form a differentiating circuit for the pulse from the signal generator. Hint: R12C1τ.
  3. plot VA and VB as a function of time using your scope observations. (20 pnts)
  4. Now add the diode circuit from part 1 to prevent V_B from rising above +5 V.
  5. plot VA and VB as a function of time with the diode circuit you added using your scope observations. (20 pnts)

Questions

  1. Explain your results in parts 1 & 2 in terms of the diode turn-on voltage. (20 pnts)

Forest_Electronic_Instrumentation_and_Measurement