# hw4 - o(s/v i(s Assume n=1 for the diode c Find the total...

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October 4, 2011 ECEN 325 Homework #4 Due: 10-18-2011, 8:00AM Homeworks will not be received after due. Instructor: Sam Palermo 1. (20 points) For the 2 following circuits solve for the labeled current I and voltage V . Use the constant- voltage-drop diode model (V D =0.7V). +5V 5k 10k -5V I V +5V 10k 5k -5V I V (a) (b) 2. (20 points) In the following circuit, the op-amp is ideal except that the op-amp output saturates at ±6V . Sketch the circuit’s transfer characteristic, v o vs v i , for v i ranging from ±10V. Use the constant- voltage-drop diode model (V D =0.7V). v i v o R R R L

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3. (20 points) For the circuit below: a) Find the DC diode current (I D ) and the DC output voltage (V O ). b) Find the small-signal AC transfer function v
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Unformatted text preview: o (s)/v i (s). Assume n=1 for the diode. c) Find the total output voltage v O,total for v i (t)=0.001sin(2π*10 5 t). 3V I D v O 1k Ω 1k Ω v i 10 µ F 4. (40 points) Design an AC adapter with the following specifications using a single-ended transformer. Choose an appropriate rectifier to minimize the capacitance. Input voltage: 120V rms , 60Hz Output voltage: 5V Maximum ripple: 5% Load current range: 0-500mA Determine the minimum specs for the diode (I Dmax , I Davg , reverse breakdown voltage), primary/secondary ratio of the transformer, and the load resistor and capacitor value....
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hw4 - o(s/v i(s Assume n=1 for the diode c Find the total...

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