Circuit Diagrams Chart Answer Key
Introduction
Road signs are good examples of recognizable symbols. A
road sign that warns of a curve uses a symbol that is easy to
interpret and recognizable by a driver. All electronic
components are represented by schematic symbols.
Schematics also illustrate how the different components are
connected using circuit diagrams. This form of communication
allows end users, electricians, engineers, and many others to
easily create, install, diagnose, and repair all kinds of
electrical systems.
Procedure
As you complete activities in Lesson 6.2 Electronics, complete the chart. Use this as a
reference for creating schematics throughout the lesson. The symbols below are
examples of components or functions. Several different types of switches exist, and
many kinds of symbols represent the different switch types.
Symbol
Draw the
Symbol
Name or
Function
Definition
Wire
Connection
Connected
Wires
Conductors used to connect different
components.
Wires would all be in contact.
Unconnected
Wires
Wires cross without connecting.
DC Source
Supplies DC electrical energy to an
electrical circuit. One terminal is
positive and the other negative.
Battery
Supplies DC electrical energy to an
electrical circuit. One terminal is
positive and the other negative.
Converts electrical energy to light
energy.
DC
Lamp
Switch
Mechanical device that connects or
disconnects a component or circuit.
Push Button
Switch
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PLTW Gateway – Magic of Electrons Circuit Diagrams Answer Key – Page 1
Motor
Converts electrical energy into motion.
Diode
A device that permits current to flow
through it in only one direction.
Light Emitting
Diode (LED)
A diode that will produce light when
current flows through it.
Variable
Resistor
A resistor whose value can be varied
between its minimum and maximum
values.
A light-sensitive device in which the
internal resistance changes with a
change in light intensity.
Photoresistor
Fixed Resistor
Capacitor
Transistor
Device used to introduce some amount
of resistance into a circuit.
Device used to store an electrical
charge.
Device used in an electrical circuit as
an amplifier or switch.
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PLTW Gateway – Magic of Electrons Circuit Diagrams Answer Key – Page 2