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PARTS DESCRIPTION
WIRES
PIEZO BUZZER
Blue rigid wires are used to connect other components.
A piezo buzzer is a device which,when a current is applied
They are used to transport electricity and do not affect
to it, can produce a sound, or emitultrasound. However, it
circuit performance. They come in different lengths to
also has the opposite effect too – if the plates are defor-
make the components arrangement on the Mounting
med, a voltage forms at the leads, meaning that you can
Plate easier.
use the piezo device as a microphone. A piezo is some-
times called a beeper. For electrical diagrams is indicated
like this:
The design of the components in your electronics kit may differ slightly from those illustrated.
TOUCH PLATE
Une plaque tactile (ou capteur) est
un dispositif capable de fonctionner
comme un interrupteur, en utilisant
la capacité de la peau humaine à
conduire le courant électrique. Si
vous touchez la plaque tactile, vous
fermez un circuit et celui-ci com-
mence à fonctionner. Pour les sché-
mas électriques, les indications sont
les suivantes :
The more nervous people get, the stickier their hands are likely to get from perspiration – and this causes
even more current to be conducted along the skin. This principle underlies the basic operations of 'lie
detector' testing machinery.
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REED SWITCH, AND THE MAGNET
BUTTON
Magnet
The red switch is a glass bulb which has two open-loop
Buttons can have all kinds of shapes and appearances,
electric metal inside it. No current can pass through it like
but they all have one main function – to allow current to
this. But if you bring a magnet up to it, the contacts close
pass when they are pressed. We find them in places like
(you hear a little click) and the current can flow through
doorbells and lift buttons. A button doesn't influence the
now. Reed switches are used in devices like security
purpose of a circuit – it just controls when the circuit
alarms, toys, domestic equipment and so on. If we take off
works. A button can also control the operation of a part of
the plastic protective cover, it looks like this:
a circuit, or of one item in a circuit. For electrical diagrams
is indicated like this:
For electrical diagrams is
indicated like this:
The design of the components in your electronics kit may differ slightly from those illustrated.
SWITCH
The switch has two positions – either ON, when the cur-
rent can pass through the switch – or OFF, which breaks
the circuit, and stops the current flowing. It's just like the
light switches which you have in your rooms at home. For
electrical diagrams is indicated like this:
ou
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