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Electronics

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Term
Definition
Cell   show
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show Two or more cells. the large terminal is positive.  
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DC Power Supply   show
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AC Power Supply   show
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Fuse   show
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show Consists of two coils of wire linked by an iron core. They are used to step up (increase) and step down (decrease) AC voltages. There is no electrical connection, instead the energy is transferred between the coils by the magnetic field in the core.  
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Ground   show
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show A device that converts energy from one from to another.  
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show Converts electrical energy to light.  
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show Convert electrical energy to light for such uses as a warning light on a car's dashboard.  
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show Convert electrical energy to kinetic energy (motion).  
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show Converts electrical energy to heat.  
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show Converts electrical energy to sound.  
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show Converts sound to electrical energy.  
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Earphones and Speakers   show
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show A coil of wire that creates magnetic field when current passes through it.  
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show Allows current to flow only when the button is pressed.  
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Push-to-break Switch   show
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On/off Switch   show
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show Directs the flow of current to one of two routes, according to its position.  
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show Often used to switch main electricity because it can isolate both live and neutral connections.  
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Relay (relay switch)   show
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show Restrict the flow of electrical current. They are rated in ohms and have color code on them to indicate their value, tolerance, and sometimes quality.  
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Black Resistor   show
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Brown Resistor   show
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show 2  
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show 3  
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Yellow Resistor   show
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show 5  
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Blue Resistor   show
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Violet Resistor   show
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Gray Resistor   show
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With Resistor   show
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show The first and second bands on the resistor are the first two digits of the resistor's value. The next band indicates the number of zeros after the first two digits. The first band is red, the second is yellow, an the third is orange, the value is 24,000  
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Variable Resistor   show
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show A type of variable resistor with two contacts, usually used to control current. Ex: adjusting light brightness or adjusting motor speed.  
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show A type of variable resistor with three contacts that's used to control voltage.  
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show A device that operates with a small screwdriver or similar tool; it's designed to be set when the circuit is made and then left without further adjustment.  
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Capacitor   show
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Diode   show
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show Amplify current. Ex: they can be used to amplify the small output current from a logic chip so it can operate a lamp, relay, or other high-current device.  
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show Is a complex circuit that is used to magnify power, current, or voltage.  
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Antenna   show
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show Amperes (or amps)  
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show Volts  
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Resistance =   show
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Power =   show
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Energy =   show
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Rectification   show
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