Relay tutorial

yasir_ali said:

Hello Every one,
can any one give the link to relay tutorial in application point of view. i know theory that a Relay is used with a small current to drive another circuit with larger current but how to use it with it.? videos would be appreciable. also please tell me that we are using relay as a switch so why can't we use Transistor as a switch instead of relay. is there any differance in the use of both Transistor and relay. what i think is the transistor handles the signal with electrical signal whereas the Relay handle it with magnet. please help me.

Thanks

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yasir_ali said:

Hey! Thanks Eric. but i think you did not understand my point. i know the terminology of Relay. OK let me clear my point. My point is what is the purpose of a relay? do we just switch a relay t switch another circuit?(i mean we power the coil and the coil creates electromagnetism to make contact for other circuit). we can do the some job without Relay by simply using an ordinary mechanical switch. or please Explain me the purpose of the Relay But give some Applications of Relay with simple circuits diagrams which i can design and understand a relay Fully.

Thanks

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