Circuit Symbols

Here are some links/photos of most basic schematic symbols.
Useful if you are ever trying to understand someone else's circuit and don't recognize some of the parts.

Electronic-Symbols.com can be very useful.  Has a great database of every variation of each symbol.  Easy to look up some odd symbols you may come across



Some other useful links:

http://en.wikipedia.org/wiki/Electronic_symbol

http://www.rapidtables.com/electric/electrical_symbols.htm

http://talkingelectronics.com/CctSymbols/Circuit_Symbols.html

http://library.thinkquest.org/10784/circuit_symbols.html