Transcript Output

What we will do today:
• Introduce the new topic on Electronic
Components.
• Identify the three main parts of any
electronic system.
• Give examples of output devices and
the energy transformations involved.
Electronic systems
• Any electronic system is made up of
three parts:
• Input  Process  Output
Output devices
• An output device in an electronic
circuit transforms electrical energy
into some other form of useful
energy.
Output devices
Output
Energy
Device
transformation
Loudspeaker Electrical 
LED
Electrical 
Lamp
Electrical 
Relay
Electrical 
Use
The Relay
Digital device operated by an electromagnet.
Changes electrical energy into kinetic energy.
S
Allows an operator to use a switch on a low voltage, low
current circuit to turn on machinery in a high voltage and/or
high current circuit.
E.g. Used in car starter motors or when handling nuclear
control rods.
Capacitors
CAPACITORS are devices which can store
charge. The ability of a device to store
charge is called its capacitance.
A capacitor is two conducting layers
separated by an insulator.
Circuit symbol:
What have we learned?
• We can state that any electronic
system is made up an input, a process
and an output.
• We can describe the energy changes
in output devices.