Electronic Circuitry•Resistors•Capacitors•Transistors•Light Emitting Diodes (LED)•Potentiometers•Silicon Controlled Rectifiers (SCR)

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

Resistors

Color bands indicate strength of resistance (ohms)

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

Capacitors

widely used in electronic circuits for blocking direct current while allowing alternating current to pass

Capacitors uses

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

Capacitors uses

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

Capacitors uses

• 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

Capacitors uses

• in electric power transmission systems for stabilizing voltage and power flow

a semiconductor device used to amplify and switch electronic signals and electrical power

Transistors

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

Transistors

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

Transistors

•voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals

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

Transistors

•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

can amplify a signal

Transistor uses

can amplify a signal the vast majority of transistors now are

produced in integrated circuits (often shortened to IC, microchips or simply chips)

Transistor uses

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

Transistor uses

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

Transistor uses

is a semiconductor light source

LEDs - Light Emitting Diodes

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

LEDs - Light Emitting Diodes

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

LEDs - Light Emitting Diodes

A potentiometer, informally, a pot, in electronics technology, is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider

Potentiometers

A potentiometer, informally, a pot, in electronics technology, is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider

Potentiometers

• or it can act as a variable resistor or rheostat.

commonly used to control electrical devices such as volume controls on audio equipment.

Potentiometers

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

Potentiometers

is a four-layer solid state current controlling device

Silicon Controlled Rectifiers (SCR)

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

Silicon Controlled Rectifiers (SCR)

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

Silicon Controlled Rectifiers (SCR)

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