schematic powerpoint
DESCRIPTION
A brief description of common electrical schematic symbols.TRANSCRIPT
Basic Electronics Refresher
By
Chris Franckowiak
SCHEMATICS
WHAT ARE SCHEMATICS?
A schematic is a structural or procedural diagram, especially of an electrical or mechanical system.
schematic. (n.d.) The American Heritage® Dictionary of the English Language, Fourth Edition. (2003). Retrieved June 25 2012 from http://www.thefreedictionary.com/schematic
SCHEMATICS• Used to graphically represent what a circuit is doing and how it is functioning.
• An atlas or roadmap of an electrical circuit
COMMON SYMBOLS• The following slides look at some of the most common symbols found in electrical
schematics
• Not all-inclusive – many others used
RESISTORS
• Variable Resistor (Pods)• Fixed Resistor
• A resistor is part of an electrical circuit that resists the flow of current• Measured in Ohms after Ohms Law
• Ohms Law: I (current) = V (Voltage) / R (Resistance)
INDUCTORS
• Air Core Inductor • Variable Inductor
• A passive electrical component that stores energy in its magnetic field• Also known as coils and chokes• Used in analog circuits and signal processing
CAPACITORS
• A passive electrical component used to store energy in an electric field
• Used to block DC while allowing AC to pass (filter)
• Smoothing outputs of power supplies
DIODES
• Many types (Zener, Avalanche, Gunn, IMPATT)
• Low resistance to current flow in one direction and high (indefinite) resistance in the other direction
• Used in rectifiers
General Gunn
COMMON SYMBOLS
• Tie Points
• Tie Points show things that are connected• Considered a path
GROUND
• Different types of grounds
• Earth ground tied to earth
• Chassis ground tied to common ground on the circuit/equipment
Earth Chassis
CONDUCTORS
• Tie Points and overlapping lines
• How current reaches individual components (resistors, capacitors, etc..)
SWITCHES
• Many, many types
• Classified by poles, throw
• Used to redirect current flow
TRANSISTORS
• Many different types
• Used to amplify and switch electronic signals
BATTERY
• Power supplies
• DC, AC
INDUCTORS
• Known as chokes, coils
• Stores energy in its electrical field
• Many types as well
GATES
• Logic gates
• And, OR, NAND, NOR, NOT, XOR, XNOR
• Can be used to store data
CONCLUSION• Symbols represent how the circuit functions
• Many slides could be made for each component (this is just a review of what you will see)
• By knowing what each one is and how they work – schematics become very familiar
• It is a learning process