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Electronics for dummies - McComb G.

McComb G., Boes E. Electronics for dummies - Wiley publishing, 2005. - 433 p.
ISBN: 0-7645-7660-7
Download (direct link): electronicsfordummies2005.pdf
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electromotive force: An attractive force between positive and negative charges, measured in volts.
electron: A negatively charged particle. See also proton.
embedded language interpreter: A program that runs inside the microcontroller that allows you to write your programs by using an easy-to-use programming language.
ESD (electrostatic discharge): See static electricity. fillet: A raised area formed by solder.
flathead: A term used to describe both a screw with a flat head and single slot, and the screwdriver you use with it.
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392 Electronics For Dummies
flux: A wax-like substance that helps molten solder flow around components and wire, and assures a good joint.
frequency: A measurement of how often an AC signal repeats (the symbol for frequency is f). See also Hertz.
gain: The amount that a signal is amplified (the voltage of the signal coming out divided by the voltage of the signal coming in).
gauge: See wire gauge.
ground: A connection in a circuit used as a reference (zero volts) for a circuit.
heat sink: A piece of metal that you attach securely to the component you want to protect. The sink draws off heat and helps prevent the heat from destroying the component.
helping hands clamp: (also sometimes called a third hand clamp) Adjustable clips that hold small parts while you’re working on projects.
Hertz (Hz): The measurement of the number of cycles per second in alternating current. See also frequency.
Hex: (also called Allen) Both a screw with a squarish hole in the head and the wrench used with it.
high signal: In digital electronics, a signal at any value higher than zero (0) volts.
I: The symbol for current.
IC. See integrated circuit.
impedence: The measure of opposition in an electrical circuit to a flow of alternating current.
inductance: The ability to store energy in a magnetic field (measured in Henries).
inductors: Components that provide the property of inductance (the ability to store energy in a magnetic field) to a circuit.
infrared temperature sensors: A kind of temperature sensor that measures temperature electrically.
input/output ports. (also called I/O ports) Connections on a microcontroller through which signals are sent or received.
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Glossary 393
insulator. A substance through which electrons are unable to move freely.
integrated circuits (ICs): Components (often called a “chip”) that contain several small components such as resistors or diodes.
inverter: A type of logic gate that has only one input. See also logic gate.
inverting mode: A process by which an op amp flips an input signal to produce the output signal.
jack. A type of connector. See also connector. joule. A unit of energy.
lithium battery: A type of battery that generates higher voltage than other types, at about 3 volts. Lithium also has a higher capacity than alkaline batteries. See also battery.
live circuit: A circuit to which you’ve applied voltage.
logic gate: An integrated circuit that takes input values and determines what output value to use based on a set of rules.
low signal: In digital electronics, a signal at or near zero (0) volts.
microcontroller: A programmable circuit.
miter box: A tool used to make angled cuts with your hacksaw.
multimeter: An electronics testing device used to measure such things as voltage, resistance, and amperage.
negative temperature coefficient (NTC) thermistor: A resistor whose resistance decreases with a rise in temperature. See also resistor, thermistor.
nickel-cadmium battery (NiCad): The most popular type of rechargeable battery. See also battery.
nickel-metal hydride battery (Ni-MH): A type of rechargeable battery. See also battery.
n-type semiconductor: A semiconductor with contaminates added that causes it to have more electrons than a pure semiconductor.
ohm: A unit of resistance (the symbol for ohm is Q). See also resistance.
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394 Electronics For Dummies
Ohm’s Law: An equation that allows you to calculate voltage, current, resistance, or power.
one-time programmable (OTP): OTP microcontrollers can only be programmed once.
open circuit: A circuit where a wire is disconnected, and no current can flow. See also closed circuit.
open position: The position of a switch that prevents current from flowing. See also closed position.
operational amplifier: (also called op amp) An integrated circuit used to boost an audio or other signal. An operational amplifier performs much better than an amplifier made from a single transistor. For example, an op amp can provide uniform amplification over a much wider range of frequencies than can a single-transistor amplifier.
oscilloscope: An electronic device that measures voltage, frequency, and various other parameters for waveforms.
oscillator: A circuit that generates waveforms. See also waveforms.
pad: Contact points on a printed circuit board used for connecting components.
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