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| − | == Switch Basics ==
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| − | A switch is often to turn something on or off. In the simplest case it is just a wire that is connected or not. Unplugging an appliance is one way to switch it off. A switch is usually a mechanical device where some sort of handle connects or disconnects conductors inside the switch. Another way of thinking of a switch is that it is like a resistor that sometimes has infinite resistance and sometimes has 0 resistance. A computer keyboard is made of a large number of switches. Some switches stay in the on or off position, others only stay on or off while you switch them, these are called momentary switches. A light switch is normally not momentary, a doorbell switch normally is momentary.
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| − | Uses:
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| − | *On Off control
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| − | *Range change, as in a meter
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| − | *Data input
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| − | Links
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| − | *[http://en.wikipedia.org/wiki/Electrical_switch Switch From Wikipedia,the free encyclopedia ( inc. Schematic and Picture )]
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| − | *[http://www.kpsec.freeuk.com/components/switch.htm Switches]
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| | == Relays == | | == Relays == |
Revision as of 15:37, 17 December 2008
FIELD_MESSAGE_bocrelal
Relays
needs cleanup
varc4tb
Switch Terminology _P_T - SPST - SPDT - DPST - DPDT - 3PDT - ....
Relays - Use these to control large power sources that a microcontroller cannot do alone
Relays - Use these to control large power sources that a microcontroller cannot do alone
