30 mins timer using LM555CN

[aybyd]

30 mins timer using 555

Hi, can you help me how can i make a 30 mins duration using LM555CN ic.
I need 30mins before my relay to activate. I am using 9v supply and a 6v relay.
What parts i need?
I want to test it first in my bread board.
Thanks in advance..

 

[rjvh]

the 555 is good for up to 2 minutes
use a CD4060 and you can set them from seconds to days
I must have somewhere a schematic

I will look for you

Robert-Jan

 

[rjvh]

see the circled area in this schematic

the time is adjustible by the potentiometer

you can play with different capacitors values to have a different time frame

get also a data scheet from the 4060 so you have more info of the outputs and other parameters of this IC

it does work I built this my self other parts of this circuit is not perfect and did already made som mods but didn't have time to put everything in the schematic yet

 

[rjvh]

don't know what it is but i am not able to up load a PDF file
i will try again

Robert-Jan

 

[rjvh]

Sorry
can not up load the file will try it tomorow again or maybe an other member has a schematic for this

Robert-Jan

 

[aybyd]

you can use www.rapidshare.com for file upload thanks!