looking for a 12VDC timer

[canute7]

Hi, I'm no electronics whiz, I have had some electrical classes at the local community college, so I do have SOME understanding of what I'm looking for, and or talking about(maybe...LOL).
What I need is a 12VDC timer that can be adjusted from say .01 sec to 1 sec or more and resets in .001-.005 sec., it should be a N.O. circuit. Also, the higher the amperage the better.
If you have any questions, please ask. Please keep in mind this is for a machine I'm building, so please don't ask about application. I just need to know about the switch.
Thank You..........canute7

 

[IanP]

One of options is to employ 555-timer that can drive a power MOSFET, if the load is DC, or a relay (or solid state relay) if the load is AC ..
Have a look at some 555 applications:
http://www.kpsec.freeuk.com/555timer.htm

IanP

 

[canute7]

Hey, thanks for the quick reply. Haven't had much time to look at the page you posted, but I will be looking at it in more detail/depth by this weekend.
I'm sure to have a few questions, will ask as I see the need.

canute7

 

[canute7]

Ok, I looked it over, 1. How do you "set" the time on and off that you want, or can you?