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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
GENERAL INFORMATION
GLOSSARY OF ELECTRONIC TERMS
Ampere: The practical unit of electrical current; the current
produced by one volt acting through a resistance of one
ohm.
Amplifier: An electrical device containing transistors, diodes
and resistors used for controlling current flow.
Arc-Over: The result of electrical current passage through
other than a designated route.
Biasing Resistor: Resistor used to develop a voltage drop and
provide transistor operation at other than ground level.
Bypass Resistor: Resistor used to provide fixed current path
around some circuit element.
Capacitor or Condenser: Device used to store electrical
energy.
Diode: A small wafer-like electrical device that allows current
to pass through itself in one direction only.
Epoxy: Bonding material used for mounting, joining,
reinforcing or insulating electrical components.
Feed-Back Resistor: A resistor through which part of the
output current of a device passes back to the input of
the device to stabilize current flow.
Heat Sink: Electronic component mounting plate which also
serves to dissipate heat from components.
Induced: Made or caused to be as indirect voltage in coil
caused by the intermittent current flow through the coil
primary windings inducing a voltage in the secondary
windings.
Infinite: Greater than an assignable quantity-as applied to the
reading of an ohmmeter.
Ohm: Electrical unit of resistance of a circuit in which a
potential difference of one volt produces a current of
one ampere.
Ohmmeter: Instrument for measuring resistance.
Panelboard: Mounting board for electrical components.
Pole Piece: Stationary and rotating parts of distributor which
carry magnetic pulse used to trigger the amplifier.
Printed Circuit: Conductive paths applied to a nonconductive
material to eliminate loose wires and condense
package size.
Relay: Device to open or close circuits and controlled from a
remote point. Resistor: A device used to limit the flow
of current to a specified value.
Silicone Grease: A special lubricant having the quality of
good heating or cooling conductivity.
Solenoid: A tubular coil for producing magnetic field and
changing electrical energy to motion.
Timer Core: Rotating pole piece of magnetic pulse distributor.
Transistor: An electrical device which acts as a switch to
control a circuit. It has no moving parts.
Trigger Transistor: Transistor serving as an off or on switch
to replace contact points.
Volt: The unit of electromotive force; that electromotive force,
which, if steadily applied to a conductor having a
resistance of one ohm, will produce a current of one
ampere.
Watt: A unit of electrical power or activity equal to the rate of
work represented by a current of one ampere under a
pressure of one volt, a volt-ampere. One horsepower is
approximately equal to 746 watts.
CTS-2128-L Page 13
PRINTED IN UNITED STATES OF AMERICA
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