Assignment:- Theoretical Worksheet
a) What is the atomic symbol for Silicon?
b) Sketch a diagram showing the electron orbital structure of the Silicon atom.
c) Explain with the aid of a diagram how Silicon atoms combine to form a stable lattice structure.
d) What is the atomic symbol for Phosphorus?
e) Sketch a diagram showing the electron orbital structure of the Phosphorus atom.
f) What is meant by "Doping" with reference to combining Silicon and Phosphorus materials?
g) Explain the difference between "N Type" and "P Type" materials.
h) Show how semiconductor materials can be combined to form a Bipolar transistor, including terminal labeling and schematic symbol.
i) Draw 2 diagrams showing a forward biased P N junction diode, a reverse biased P N junction diode and explain the difference in terms of current flow.
j) What is meant by, "Forward Voltage Drop" and what value should it be for a silicon junction?
k) What is meant by, "Reverse Voltage Breakdown" when referring to a diode?
I) What is the difference between Reverse Voltage Breakdown between an ordinary PN Diode and a Zener Diode?
m) Show how 4 PN Diodes can be connected to form a full wave bridge rectifier.
n) Sketch the output wave from the above bridge when the input is a Bipolar Sine wave.