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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 Project Lead The Way, Inc. Copyright 2010 GTT – Unit 6 – Lesson 6.2 – Circuit Diagrams Answer Key – Page 1 Push Button Switch disconnects a component or circuit. 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. Project Lead The Way, Inc. Copyright 2010 GTT – Unit 6 – Lesson 6.2 – Circuit Diagrams Answer Key – Page 2