Transcript Electronic Circuitry

•Resistors
•Capacitors
•Transistors
•Light
Emitting Diodes (LED)
•Potentiometers
•Silicon Controlled Rectifiers (SCR)
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passive two-terminal electrical component
that implements electrical resistance as a
circuit element
help control current flow in a circuit.
protect electronics from circuit overload or
destruction
perform as filters or voltage dividers
Color bands indicate strength of
resistance (ohms)
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A capacitor (originally known as condenser) is
a passive two-terminal electrical component
used to store energy in an electric field
characterized by a single constant value,
capacitance, measured in farads
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widely used in electronic circuits
for blocking direct current while
allowing alternating current to
pass
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widely used in electronic circuits for blocking
direct current while allowing alternating
current to pass
in filter networks, for smoothing the output
of power supplies
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widely used in electronic circuits for blocking
direct current while allowing alternating
current to pass
in filter networks, for smoothing the output
of power supplies
in the resonant circuits that tune radios to
particular frequencies
widely used in electronic circuits for blocking
direct current while allowing alternating
current to pass
• in filter networks, for smoothing the output
of power supplies
• in the resonant circuits that tune radios to
particular frequencies
• in electric power
transmission systems for
stabilizing voltage and
power flow
•
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a semiconductor device used to amplify and
switch electronic signals and electrical power
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a semiconductor device used to amplify and
switch electronic signals and electrical power
composed of semiconductor material with at
least three terminals for connection to an
external circuit
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a semiconductor device used to amplify and
switch electronic signals and electrical power
composed of semiconductor material with at
least three terminals for connection to an
external circuit
•voltage or current applied
to one pair of the
transistor's terminals
changes the current
flowing through another
pair of terminals
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a semiconductor device used to amplify and
switch electronic signals and electrical power
composed of semiconductor material with at
least three terminals for connection to an
external circuit
•voltage or current applied to
one pair of the transistor's
terminals changes the current
flowing through another pair
of terminals
•is the fundamental building
block of modern electronic
devices
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can amplify a signal
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can amplify a signal
the vast majority of transistors now are
produced in integrated circuits (often
shortened to IC, microchips or simply chips)
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can amplify a signal
the vast majority of transistors now are produced
in integrated circuits (often shortened to IC,
microchips or simply chips)
essential usefulness of a transistor comes from
its ability to use a small signal applied between
one pair of its terminals to control a much larger
signal at another pair of terminals. This property
is called gain
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can amplify a signal
the vast majority of transistors now are produced
in integrated circuits (often shortened to IC,
microchips or simply chips)
essential usefulness of a transistor comes from
its ability to use a small signal applied between
one pair of its terminals to control a much larger
signal at another pair of terminals. This property
is called gain
can be used to turn current on or off in a circuit
as an electrically controlled switch
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is a semiconductor light source
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is a semiconductor light source
When switched on, electrons are able to
recombine with electron holes within the device,
releasing energy in the form of photons. This
effect is called electroluminescence
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is a semiconductor light source
When switched on, electrons are able to
recombine with electron holes within the device,
releasing energy in the form of photons. This
effect is called electroluminescence
advantages over incandescent light sources
including lower energy consumption, longer
lifetime, improved physical robustness, smaller
size, and faster switching
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A potentiometer, informally, a pot, in
electronics technology, is a three-terminal
resistor with a sliding contact that forms an
adjustable voltage divider
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A potentiometer, informally, a pot, in
electronics technology, is a three-terminal
resistor with a sliding contact that forms an
adjustable voltage divider
• or it can act as a
variable resistor or
rheostat.
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commonly used to control electrical devices
such as volume controls on audio equipment.
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commonly used to control electrical devices
such as volume controls on audio equipment.
Potentiometers operated by a mechanism
can be used as position transducers, for
example, in a joystick
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is a four-layer solid state current controlling
device
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is a four-layer solid state current controlling
device
"silicon controlled rectifier" or SCR is General
Electric's trade name for a type of thyristor,
which act as bistable switches, conducting
when their gate receives a current trigger
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is a four-layer solid state current controlling
device
"silicon controlled rectifier" or SCR is General
Electric's trade name for a type of thyristor,
which act as bistable switches, conducting
when their gate receives a current trigger
used in switching applications - In the normal
"off" state, the device restricts current to the
leakage current. When the gate-to-cathode
voltage exceeds a certain threshold, the
device turns "on" and conducts current
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Now sort your components in your bag into
catagories and compare with the parts list in
the yellow book to see how you did
List the symbols for them in a circuit diagram
in your notebooks