Charge and Current
Charge and Current
Current Flow versus Electron Flow
Basic electronic components
Voltage supplies Direct current (DC)
Resistors
What are Rs?
R ~ L, ~ 1/A
Resistors
Ohm’s Law
using Ohm’s law
Why use resistors?
Heat production
Common uses
Capacitors
Capacitors
Uses of capacitors
example: flashing hazard light
Transistor
Transistor basic operation
Transistor operation, cont.
Transistor properties
The Field Effect Transistor
hydrodynamic analogy
how does “gate” work? structure
apply voltage to gate, put electrons on it
charge on gate causes repelling field
Depletion
The Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET)
Depletion FET
Types of MOSFETs - next time
Summary
Next time
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