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# Schematic powerpoint

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A brief description of common electrical schematic symbols.

A brief description of common electrical schematic symbols.

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### Transcript

• 1. SCHEMATICSBasic Electronics Refresher By Chris Franckowiak
• 2. WHAT ARE SCHEMATICS?A schematic is a structural or procedural diagram, especially of an electrical ormechanical system.schematic. (n.d.) The American Heritage® Dictionary of the English Language,Fourth Edition. (2003). Retrieved June 25 2012 fromhttp://www.thefreedictionary.com/schematic
• 3. SCHEMATICS• Used to graphically represent what a circuit is doing and how it is functioning.• An atlas or roadmap of an electrical circuit
• 4. COMMON SYMBOLS• The following slides look at some of the most common symbols found in electrical schematics• Not all-inclusive – many others used
• 5. RESISTORS • Fixed Resistor • Variable Resistor (Pods) • 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)
• 6. 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
• 7. 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
• 8. DIODES General Gunn• 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
• 9. COMMON SYMBOLS • Tie Points• Tie Points show things that are connected• Considered a path
• 10. GROUND Earth Chassis• Different types of grounds• Earth ground tied to earth• Chassis ground tied to common ground on the circuit/equipment
• 11. CONDUCTORS• Tie Points and overlapping lines• How current reaches individual components (resistors, capacitors, etc..)
• 12. SWITCHES• Many, many types• Classified by poles, throw• Used to redirect current flow
• 13. TRANSISTORS• Many different types• Used to amplify and switch electronic signals
• 14. BATTERY• Power supplies• DC, AC
• 15. INDUCTORS• Known as chokes, coils• Stores energy in its electrical field• Many types as well
• 16. GATES• Logic gates• And, OR, NAND, NOR, NOT, XOR, XNOR• Can be used to store data
• 17. 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