Making Wireless bell Circuit?

[slaich2000]

Hi

I am currently Engineering student and would like to ask how to make a wireless bell. Sorry to say that I don't know its exact circuit. Please anyone help me to give the circuit diagram and how to make it?

Thanks

 

[karesz]

I think, these is basically an oscillator, working over a cell(1,5V battery) maybe w. some simple modulating.
You can apply a w.-less door opener as w.-less bell too.
These has a "coding than"; & you are nut disturbant for other RF systems...
K.

 

[pranam77]

Just get Holtek HT12E encoder and HT12D decoder ic's just rig it over a vero board. Here are the schematics. Also readymade assembled and tested kit for 4 channel remote with HT12 is available here.www.united77.com/projects.htm
Cheers

 

[karesz]

Yea,
exactly so a thing/solution was behind my idea too!
K.

 

[welove8051]

hello,





all the best


regards
kj