1. Switches Weusi Erskine
PRESENTED BY
Weusi Erskine
PHONE: (814)

2. Switch Terminolgoy Switches Normally Open (N.O.)
Without the activating the switch the contact is open
Normally Closed (N.C.)
Without the activating the switch the contact is closed
Pole
Number of wires that a switch will connect or disconnect at one time
Throw

3. For example, the stop watch buttons
Switches
Push Buttons
For example, the stop watch buttons

4. Single Pole Single Throw (SPST)
Switches
Single Pole Single Throw (SPST)
For example, a simple light switch for one light

5. Single Pole Double Throw (SPDT)
Switches
Single Pole Double Throw (SPDT)
For example, a rail road crossing light, at least one light is on at all times

6. Double Pole Single Throw Double Pole Double Throw
Switches
Double Pole Single Throw Double Pole Double Throw
For example, a simple light switch for two lights, to switch both on or both off
For example, a simple light switch for one light

7. Switches
D5 Series

8. Switches
C4 Series

9. Conclusion
Switches are used in everyday life and people used them everyday without knowing exactly what they do.
From what was presented here today, you can see, that things would be quite difficult without the help of a simple switch.
References
Note: SWITCHES ARE EXPENSIVE, $3.84 for a push button