The
circuit symbols shown below may be used and candidates will
be expected to recognise them.
Students are not making the effort to learn this information
may be considering that it is not necessary for the exam even
though it is an exam syllabus topic.
By
learning these symbols you will be certainly assured of a
simple mark in the exam if a question turns up. So look for
the similarity in the symbols.
As a
learning aid make up a set of flash cards with the symbol
drawn on one side and the text on the other so that you can
easily test yourself.
s.p.s.t = single pole single throw. There is only one switch
which, makes contact so it is like a normal light switch
either on of off.
d.p.s.t = double pole single throw. Here there are two
switches that switch separate circuits but at a
simultaneously.
This is quite straight forward and you will
have to just learn them off by heart. It would be a good
idea to print them out and have some one test you.
In
the exam you may have a question that shows you a symbol of
say a transistor or fet and asks you to identify one or more
of the connections. So do not look at these items in isolation
of the other parts of the course where explanation is given as
to use.
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