How i can operate a relay?

[Altafhal]

hi friends,
i am new to electronics and i want to operate a relay for my home automation project. can someone help me how to operate a relay and for home automation which relay i can use?

Thanks.

 

[A.Anand Srinivasan]

relay consists of a switch which connectivity position can be controlled using current through a coil... this uses the principle of magnetic field when current passes through a coil and the attraction of metal towards magnet... relay contains a Normally Open(NO) position and Normally Closed(NC) position and switching between the two can be done using current through the coil...

 

[siongboon]

You can refer to this simple guide for controlling gadgets.
Hopes it helps you in understanding how a relay works.

The article is also useful for your home automation project.

**broken link removed**

Have fun.

 

[Ali.Samari]

Hi,
There are so many solid state Relays that their input(controlling)voltage is 5,12,24,...DC depending on the device or micro controller that u use to control appliance,and their output(controlled) voltage is 220 or more (normally 380)is convenient to use for home appliance.if u want,I can give u more info and data sheet .
BR