pp2486869f.png
pp72248fb6.png
pp476fc86b.png
pp5533b116.gif
ppbf0de191.png
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
ppc237063b.png
pp89a06732.png
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp26321739.png
pp5533b116.gif
pp69ee2726.png
pp5533b116.gif
pp5533b116.gif
14th  November 2010
ppcb5a541f.png
img72.gif
img126.gif
img132.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
ppa73c091c.png
pp5533b116.gif
pp94b386ac.png
pp27045f48.png
pp210be48e.png
ppc1a36b04.png
pp5c9847cf.png
pp26b86092.png
ppe72f634e.png
pp5533b116.gif
ppecebcecb.png
pp21f81653.png
ppc0c66fe3.png
ppc19efdae.png
pp7460c322.png
The BATTERY supplies a source of ELECTRONS that make for the flow of ‘electricity’ in the circuit.
The LED (Light Emitting Diode) is the OUTPUT.  It cannot take a large flow of electricity and is therefore ‘protected’ by the RESISTOR in the circuit.
The FUSE in this circuit
is being ‘tested‘
... if the light from the LED shows then the circuit has been completed and the fuse is useable in a plug.  
If it does not complete the circuit and the LED  fails
to glow then the fuse is
‘Blown’ and needs to be
thrown away.  (Some fuses have the wire visible)
The RESISTOR does just what its name suggests.  It ‘resists’ the flow of the
electricity in the circuit.  This flow of
electricity is called the CURRENT.
The rest of the circuit is made of an
electrical conducting material.  A major
characteristics of metals is that they
conduct electricity so wires usually need to be covered in an insulating material to prevent short circuits.  Plastics, wood, paper and ceramics are examples of insulators.
pp8cb98e21.png
ppb9422b12.png
pp7b61949b.png
pp0ab80b1b.png
ppf7f499a2.png
Even a very simple circuit like the one shown here demonstrates the
parts of a simple system.         INPUT     PROCESS     OUTPUT
ppa85a5a8f.png
pp613ac699.png
pp216f019d.png
There is nothing too magical about each of the components that we use in electronic circuits. They each have a particular effect on the flow of electrons in a circuit. What is a ‘flow of electrons’ ?  Well … that’s what the flow of electricity really is.  If you’re not sure what an electron is then don’t worry just think of it as electricity. The BATTERY is a ‘supply of electrons’ and a conducting wire links one part of the circuit to the next.  To prevent electrons ‘short-circuiting’ and not following the route we want, insulating material is used.  If the flow of electricity needs to be restricted then RESISTORS are used.
img72.gif
img126.gif
img132.gif
pp5533b116.gif
pp5533b116.gif
pp5533b116.gif
IWB Electronics Wordsearch
pp5533b116.gif
ppe63248d5.png
pp5533b116.gif
pp5533b116.gif
          
  Download Wordsearch
pp5533b116.gif