CSCI 1006 Lecture Notes - Lecture 3: Light-Emitting Diode
21 Sep 2016
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Current – the flow of electrons
Voltage – electrical pressure
Circuits-
Three things are needed to complete a circuit: a power battery, a conductor, and a load
(resistor).
Two Types of Circuits: Serial and Parallel Circuits.
For Serial Circuits, there are more than one switch and all the switches needs to be
turn on in order for the circuit to work
For Parallel Circuits, there are more than one switch but only one switch needs to be
closed for the circuit to work
Three Conditions of Circuits: Open, Closed, and Short Circuits.
Arrows shows direction of current, whether something emits light, (and switches?)
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Document Summary
Three things are needed to complete a circuit: a power battery, a conductor, and a load (resistor). Two types of circuits: serial and parallel circuits. For serial circuits, there are more than one switch and all the switches needs to be turn on in order for the circuit to work. For parallel circuits, there are more than one switch but only one switch needs to be closed for the circuit to work. Three conditions of circuits: open, closed, and short circuits. Arrows shows direction of current, whether something emits light, (and switches?) First, the power company (or whatever) sends ac or alternating current down the electrical wires. Then the voltage is changed through filtering which is done by a transformer. Two kinds of transformers: the step-down transformer and the step-up transformer. After filtering, the current then goes through rectification, where the current is changed. (from ac to dc) This is done by diodes, which are like one-way values.
