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(Elliott) #1
bus: A connection point.

cable:Sets of two or more wires that are protected by an outer insulation
layer. The common power cord is an example of a cable.

capacitance: The ability to store electrons. You measure capacitance in
farads.

capacitor: A component in a circuit providing the property of capacitance.
See alsoelectrolytic capacitor, ceramic capacitor, tantalum capacitor.

cathode:The negative terminal of a diode. See alsoanode.

ceramic capacitor: One of the most common types of capacitor. This type is
used for smaller values of capacitance. See alsocapacitor.

circuit: Wires that connect components in such a way that a current flows
through the components and returns to the source.

closed circuit: A circuit with connected wires, so that current is able to flow.
See alsoopen circuit.

closed position:The position of a switch in which current can flow. See also
open position.

CMOS:A type of IC that is very sensitive to ESD. See alsointegrated circuit,
static electricity.

cold solder joints: A bad joint. These happen when solder doesn’t flow prop-
erly around metal parts.

commutator: A device that changes the direction of electric current in a
motor or generator.

components:The parts you use in electronics projects, such as a capacitor
or resistor.

conductor: A material through which electricity moves freely.

connector: Metal or plastic receptacles on equipment into which you can fit
cable ends.

continuity: A multimeter test of whether a circuit is intact between two
points. See alsomultimeter.

current:The flow of an electrical charge.

382 Electronics Projects For Dummies


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