Manual

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E
lectric Field The region of electric attraction
or repulsion around a constant
voltage. This is usually
associated with the dielectric in
a
capacitor.
Electricity A flow of electrons between
a
toms due to an electrical
charge across the material.
Electrolytic Capacitor A type of capacitor that has
high capacitance and is used
m
ostly in low frequency
circuits. It has polarity
markings.
Electron A sub-atomic particle that has
an electrical charge.
Electronics The science of electricity and
its applications.
Emitter The output of an NPN bipolar
junction transistor.
Encode To put a message into a format
which is easier to transmit.
Farad, (F) The unit of measure for
capacitance.
Feedback To adjust the input to
something based on what its
output is doing.
Flip-Flop A type of transistor
configuration is which the
output changes every time it
receives an input pulse.
FM Frequency modulation. The
frequency of the radio signal is
varied depending on the
information being sent.
Forward-Biased The state of a diode when
current is flowing through it.
Frequency The rate at which something
repeats.
Generator A device which uses steam or
water pressure to move a
magnet near a wire, creating
an electric current in the wire.
Germanium A chemical element that is
used as a semiconductor.
Ground A common term for the 0V or “–
” side of a battery or generator.
Henry (H) The unit of measure for
Inductance.
I
nductance The ability of a wire to create
an induced voltage when the
current varies, due to magnetic
effects.
I
nductor A component that opposes
changes in electrical current.
Integrated Circuit A type of circuit in which
transistors, diodes, resistors,
and capacitors are all
constructed on a
s
emiconductor base.
Kilo- (K) A prefix used in the metric
system. It means a thousand of
something.
Light Emitting Diode A diode made from gallium
(LED) arsenide that has a turn-on
energy so high that light is
generated when current flows
through it.
Magnetic Field The region of magnetic
attraction or repulsion around a
magnet or an AC current. This
is usually associated with an
inductor or transformer.
Magnetism A force of attraction between
certain metals. Electric
currents also have magnetic
properties.
Meg- (M) A prefix used in the metric
system. It means a million of
something.
Micro- (m) A prefix used in the metric
system. It means a millionth
(0.000,001) of something.
Microphone A device which converts sound
waves into electrical energy.
Milli- (m) A prefix used in the metric
system. It means a thousandth
(0.001) of something.
Modulation Methods used for encoding
radio signals with information.
Morse Code A code used to send messages
with long or short transmit
bursts.
NAND Gate A type of digital circuit which
gives a HIGH output if some of
its inputs are LOW.
NPN Negative-Positive-Negative, a
type of transistor construction.
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