Experiment # 1: Diodecircuit Applications
1.1 Introduction
The diode is the simplest nonlinear device: it allows current to flow forward
from its anode terminal to the cathode, but it blocks the current flow in the opposite direction. It is
used in many circuit applications such as actodc power conversion, logic gates, and signal shaping,
to mention but a few.
This experiment examines the behaviors of various diode circuits: The diode
logic gate
circuits, and
actodc
conversion circuit, and the
zener shunt regulator
circuit.
1.2 Prelab Assignment
(1)Consider the circuits in Fig. (1.1) and (1.2). Let the voltages at nodes (A) and (B) relative to circuit
ground be set at any combination of either a high or a low voltage level, and the LED then becomes
either ON or OFF.
Use the positive logic system to write the Boolean equation of each circuit which describes the
relationship between the LED condition and the voltage levels at (A) and (B).
(2)Consider the circuit in Fig. (1.3). Let the input voltage
be a sinusoid
with an
8V
(peaktopeak) at a frequency of
500 Hz
.
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 Spring '10
 BUDNY
 Logic gate, peaktopeak ripple voltage, output voltage waveform

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