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Lab+4+Diode+Circuit+II

Lab+4+Diode+Circuit+II - EECS 70LB Spring 2011 Lab 4 Diode...

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EECS 70LB Spring 2011 Lab 4: Diode Circuits II Readings from Scherz: (In addition from Lab 3) 4.2.6 (Zener Diode); Summary: There are 3 circuits for this lab designated as 4-1, 4-2, 4-3 4-1 Waveform Modifier and Limiter using Zener Diodes (Fig. 4.32, pp 433, Scherz) Procedure: Construct the circuit as shown in Fig. 4-1. Use a 1N4733A Zener diode (V z of 5.1V) for Z 1 and a 1N4739A Zener diode (Vz of 9.1V) for Z 2 . Use a 10 kHz sinusoidal signal as the source. Vary the amplitude of the source from 4V to 10V continuously. Sketch the output waveform and write down the maximum and minimum voltages at amplitudes of 4, 6, 8, and 10 V). Fig. 4-1 Prelab report: Simulate the circuit responses using PSPICE. To simulate a zener diode, use the DBREAKZ model from the BREAKOUT library. You need to specify the breakdown parameters of the zener diode. Right-click on the zener diode after you’ve placed it, choose “Edit PSpice Model.” Add the following code to the model for the zener diode: For the 1N4733A: Bv=5.1 Ibv=49e-3 For the 1N4739A: Bv=9.1 Ibv=28e-3 where “Bv” is the zener breakdown voltage and “Ibv” is the zener breakdown current.
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