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Electrical Technology

Electrical Technology. Basics of electricity and electrical technology. Electricity. Atoms – The smallest unit of each element Electrons – negatively charged particles in atoms Ions – charged atoms or molecules Magnets – A metal with opposite charges on each side.

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Electrical Technology

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  1. Electrical Technology Basics of electricity and electrical technology

  2. Electricity • Atoms – The smallest unit of each element • Electrons – negatively charged particles in atoms • Ions – charged atoms or molecules • Magnets – A metal with opposite charges on each side. • Magnets can be used to create electricity.

  3. Static Electricity • Lightning • Charge Build up • Energy Release • Path of Least Resistance

  4. Electric Circuits • Electricity flowing through a substance is called an electric current. • Conductors – Low resistance • Insulators – High resistance

  5. Schematic Symbols • A drawing of an electric circuit is called a schematic. • Symbols • Resistor • Battery Source • Switch

  6. Ohms Law • V – voltage or electrical potential • I – current or electrical flow • R – resistance or load • Ohms law states: • V = IR

  7. Series and Parallel Circuits • Series circuit - has only one path through which the electricity can flow. • Parallel circuit - has multiple paths through which the electricity can flow.

  8. Switches • Switches are used to control circuits. • Switches connect or disconnect all or part of a circuit. • Switches come in many forms. • SPST • SPDT • DPST • DPDT

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