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March 4, 2014. Switches and Motors How do parallel circuits, switches, and motors help us to build circuits with more complex functions?. What is a switch?. switch : a component made of conductive material that controls the flow of current through the circuit. Hold down switch.
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March 4, 2014 Switches and MotorsHow do parallel circuits, switches, and motors help us to build circuits with more complex functions?
What is a switch? • switch: a component made of conductive material that controls the flow of current through the circuit
Hold down switch • when held down, two conductive ends touch together, completing the circuit • Examples: our blue circuit boards, remote controls (volume button or video game), power tools (the trigger) • Usage: when we want momentary control over current flow
On/Off Switch • A switch that is set in one of two positions: either the conductive materials touch or don’t touch • Examples: TV power button, light switches • Usage: to simply either have current flowing or not flowing, but not have to hold the switch in place.
Three-Way Switch • a switch that moves a piece of conductive material to one of two paths • Similar to a railroad switch • Examples: Traffic Lights • Usage: Switching current back and forth between several components
Motors • A component that uses current and internal magnets to cause a rod to spin. • Most electrical devices with moving parts have motors.