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inductive eld coil: A coil of wire, attached to a
segmented iron core, that produces a magnetic eld
when current is passed through it.
ionization gap: The distance between the ignition
armature pole and the secondary pole in the spark
tester.
L
lamination stack: An electrical component that
consists of thin iron layers used to focus and control
the lines of magnetic ux.
lead-acid battery: A battery that stores electrical
energy using lead cell plates and sulfuric acid
(H2SO4).
limited angle torque (LAT) motor: A direct current
(DC) motor used to control governor system
components in an electronic governor system.
load: A device that uses electricity, such as the starter
motor, lights, or other application accessories.
M – N
magnet: A material that attracts iron and produces
a magnetic eld.
magnetic eld: An area of magnetic force created
and dened by lines of magnetic ux surrounding a
material in three dimensions.
magnetic ux: The invisible lines of force in a
magnetic eld.
magnetism: An atomic level force derived from
the atomic structure and motion of certain orbiting
electrons in a substance.
magneto: An alternator with permanent magnets
used to generate current for ignition in an internal
combustion engine.
Magnetron® ignition system: An ignition system
that uses electronic components in place of breaker
points and a condenser.
manual switch: A switch operated by a person.
mechanical switch: A switch operated by the
movement of an object.
milliamp: An expression meaning 1/1000th of an
amp.
millivolt: An expression meaning 1/1000th of a
volt.
neutrons: The neutral parts of an atom which have
no electrical charge.
N-type material: A portion of a silicon crystal that has
an excess of electrons and a deciency of protons.
nucleus: The center of the atom, which consists of
protons and neutrons.
O – P
Ohm: Unit of electrical resistance. One volt will
cause a current of one ow through a resistance of
one ohm.
Ohm’s law: A law that states the relationship between
voltage, current, and resistance in any circuit.
parallel circuit: A circuit that has two or more paths
(branches) for current ow.
pathway: A conductor (commonly copper wire),
which connects different parts of the circuit.
permanent (hard) magnet: A magnet that retains
its magnetism after a magnetizing force has been
removed.
phase: The uniform periodic change in amplitude
or magnitude of an alternating current. Three phase
alternating current consists of three different sine
wave current consists of three different sine wave
current ows, different in phase by120 degrees from
each other.
polarity: The state of an object as negative or
positive.
polarity-sensitive circuit: A circuit that does
not operate properly when exposed to the wrong
polarity.
potential energy: Stored energy a body has due to
its position, chemical state, or condition.
power: The rate at which work is done.
Power Transfer System: A system to safely wire
your generator to your home’s electrical system.
protons: The parts of the atom that have a positive
electrical charge.
P-type material: A portion of a silicon crystal that has
an excess of protons and a deciency of electrons.
pulsating DC: DC voltage produced by rectifying
(removing) one‑half of an AC sine wave.
pulse: Half of a cycle.
R – S
rated speed: Revolutions per minute at which the
set is designed to operate.
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