How can i design simple alarm circuit


Joined Dec 14, 2004
Originally posted by yaron4@Apr 2 2005, 04:06 AM
I work with multisim but any pic wil help me.
Thank you a lot
[post=6646]Quoted post[/post]​
Depending on your application, you don't even need to use a pic. It could be done with a 555 timer by itself at the easiest point.

What type of activation switch and response are you looking for?


Joined Jan 22, 2004

if you want a very simplified alarm you can do it with just a couple of transistor to monitor current changes to trigger a relay to sound the alarm :)

using the 555 has been always been the common solution :)