Switches
- Taking Control
We have seen
in the last section how switches give us control. They are used to interrupt
the current flowing in a circuit. There are many types of switch and
places where they are used.
Switches have
to be chosen carefully to suit the user and environment they are in.
Please go down the page to view some of the different types we commonly
use.
|
Rocker
Switch
Quick
and easy to operate
- used
for room lighting
- once
operated they stay in the position they have been put.
(latched)
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Push
Button Keyboard
Switches
Easy
and comfortable to use.
- Used
in standard keyboards
for P.C's.
-once
operated they return.
(momentary
/non-latching)
|
|
Membrane
Panel Switch
Waterproof,
hygienic and
safe to use in damp areas.
- Used
for cookers,vending
machines
photocopiers or for
flat
surfaces.
(momentary /non-latching)
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Push
Button Switches
- Used
for calculators,
mobiles etc where many
switches need to be placed
next to each other.
(momentary
/ non-latching)
|
|
S.P.S.T
Switches 
S.P.S.T. stands for "Single Pole Single Throw". These switches
have two connections and as shown previously can either allow current
to flow or not to flow in the circuit it has been placed.