Coils, Transistors, and Relays...

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Posted:
in General Discussion edited January 2014
I have some questions, anyone who knows about electronics please feel free to answer...and anyone who knows about electronics and can read schematics please email ( ast3r3x@myrealbox.com ) me because I have a question about a schematic I bought and how 2 parts come together.



1) What does a relay do?



2)Where can I find out what transistors, and special kinds of coils (my schematic calls for a toko coil...I know toko is a company). I don't want to know what transitors do generally I want to be able to find out what each and every model transitor does to the current run through it.



3) Thanks to anyone and everyone who can help and even looked over with the hopes of helping.



-I am just wondering this because what is the use of building electronics if you don't understand exactly what they do? Then how are you supposed to be able to build ur own if you can't find a transistor to fit your own needs?
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