Help: count down timer - Electronic Circuits Projects Diagrams Free

radiomans · 21st July 2008, 07:39 PM

Hi
Looking for some help with a count down timer for my uv exposer box
it needs a relay output so that when time has stoped it will switch off the tubes

Thankes in advance
Radiomans

Hero999 · 21st July 2008, 07:46 PM

Use a 555 timer.

mneary · 21st July 2008, 10:39 PM

Go to the electrical department of your hardware store and look for spring-return timers made by Intermatic.

radiomans · 22nd July 2008, 01:39 PM

Hi
Thanks guys got it sorted out now

Radiomans

Hero999 · 22nd July 2008, 04:32 PM

What did you use in the end?

radiomans · 22nd July 2008, 04:53 PM

Hi
This is what i will be making

pictimer_schem.gif
Its cheep and there is a pcb layout too

Thanks again
Radiomans

Hero999 · 22nd July 2008, 05:00 PM

That's a sensible solution.

Do you have a link to the origional or the source code?

radiomans · 22nd July 2008, 05:19 PM

Hi
Heres the link http://www.geocities.com/b94_1999/index.htm

Radiomans

Menticol · 22nd July 2008, 06:28 PM

Why you don't scrap a microwave oven timer? digital, reliable, beautiful! and fully programable, even if you wanna cook the box contents

radiomans · 22nd July 2008, 06:33 PM

Hi
I think that the wife would have something to say if i took the
timer out of the microwave lol

Radiomans

Menticol · 22nd July 2008, 06:50 PM

hahahaha she may take your balls in exchange of the timer! I suggest you to ask an oven repair shop or something like that

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Title	Starter	Forum	Replies	Latest
Count Down Timer Problem (Again)	GOkussj5okazu	Electronic Projects Design/Ideas/Reviews	10	27th June 2008 12:35 AM
Count Down Timer	RetiredHAL	Electronic Projects Design/Ideas/Reviews	8	8th March 2008 04:36 PM
count down timer	nader hoseini	Electronic Projects Design/Ideas/Reviews	1	28th August 2007 09:15 AM
Binary Count down timer	hugehead	General Electronics Chat	3	8th March 2005 01:49 AM
Count-down timer	sword	Electronic Projects Design/Ideas/Reviews	11	18th June 2004 03:03 PM

21st July 2008, 07:39 PM	(permalink)
radiomans	Help: count down timer Hi Looking for some help with a count down timer for my uv exposer box it needs a relay output so that when time has stoped it will switch off the tubes Thankes in advance Radiomans

21st July 2008, 07:46 PM	(permalink)
Hero999	Use a 555 timer. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.

21st July 2008, 10:39 PM	(permalink)
mneary	Go to the electrical department of your hardware store and look for spring-return timers made by Intermatic.

22nd July 2008, 01:39 PM	(permalink)
radiomans	Hi Thanks guys got it sorted out now Radiomans

22nd July 2008, 04:32 PM	(permalink)
Hero999	What did you use in the end? __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.

22nd July 2008, 04:53 PM	(permalink)
radiomans	Hi This is what i will be making pictimer_schem.gif Its cheep and there is a pcb layout too Thanks again Radiomans

22nd July 2008, 05:00 PM	(permalink)
Hero999	That's a sensible solution. Do you have a link to the origional or the source code? __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez And http://www.silicontronics.com, same screen name as here.

22nd July 2008, 05:19 PM	(permalink)
radiomans	Hi Heres the link http://www.geocities.com/b94_1999/index.htm Radiomans

22nd July 2008, 06:28 PM	(permalink)
Menticol	Why you don't scrap a microwave oven timer? digital, reliable, beautiful! and fully programable, even if you wanna cook the box contents __________________ La Rotta Last edited by Menticol; 22nd July 2008 at 06:30 PM.

22nd July 2008, 06:33 PM	(permalink)
radiomans	Hi I think that the wife would have something to say if i took the timer out of the microwave lol Radiomans

22nd July 2008, 06:50 PM	(permalink)
Menticol	hahahaha she may take your balls in exchange of the timer! I suggest you to ask an oven repair shop or something like that __________________ La Rotta