help needed (electronic gurus)

CVH and Zetec tuning, suspension and braking mods.

help needed (electronic gurus)

Postby paradox on Sun Jul 23, 2006 10:39 pm

Is there any electronic gurus on her who could design me a circuit that i could make with parts from maplin.

basically i want to be able to switch a 12volt source on when a thermister reaches a set temperature i would also like to be able to adjust the temperature the 12 volts source is switched at.

If anyone could help me with this i would be very greatfull
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Postby JayC on Thu Jul 27, 2006 9:46 pm

im no expert.. but i could work from a schematic easy so ill have a butchers for you..

i think the main components really would just be a transistor working off the thermocouple...

a pot to adjust the range..

and a relay..

ill see what i can find mate
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Postby JayC on Thu Jul 27, 2006 9:52 pm

http://ourworld.compuserve.com/homepage ... /page2.htm

scroll down mate its on there somewere.. simple thermostat switch for auto applications..

will come in handy for me too :)

what you switching man?
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Postby paradox on Thu Jul 27, 2006 10:04 pm

Im going to make an intercooler water spray that will automatically switch on when act reaches a preset level
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Postby JayC on Thu Jul 27, 2006 10:14 pm

cool.. you should use a seperate ACT tho dont take a feed from the same ACT as the ecu uses.. you might mess the signal, but theres plently of places to stick one.
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Postby paradox on Fri Jul 28, 2006 10:57 am

yeah i will do dont worry i also will be installing an act gauge so i can keep an eye on whats happening
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Postby JayC on Mon Jul 31, 2006 2:11 am

cool.. show us what you come up with mate.
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Postby FezzR on Mon Jul 31, 2006 1:13 pm

i can see you emptying a lot of water very quickly
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Postby paradox on Mon Jul 31, 2006 2:01 pm

Im hoping once its set right it wont as it should only activate when acts get very high
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Postby FezzR on Mon Jul 31, 2006 5:29 pm

trouble is the times when your act.s get really high will be the times when it takes a lot of cooling down, worth a go just dont get your hopes up
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Postby ~Tony~ on Wed Aug 02, 2006 8:50 pm

yeah wouldn't it be better putting it on when the acts are midrange so its less likely to superheat and need major cooling down
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Postby paradox on Wed Aug 02, 2006 9:56 pm

i suppose its just going to be a case of trial an error once ive made and fitted it as to what temperature to activate it at.

My cars till a bare shell at the moment so its a long way of little thigs like that but when i do come to do it i may make a little guide so others can try it out.


I know mistubishi evos have an intercooler spray does anyone know what act they operate at?
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Postby FezzR on Thu Aug 03, 2006 8:04 am

what ever temp you set it at, put a timer on it so it doesnt spray constantly
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Postby CRF on Thu Aug 03, 2006 1:00 pm

The Evo IC spray isn't automatic, you have to press and hold a button to activate it when needed
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Postby paradox on Thu Aug 03, 2006 1:31 pm

CRF :The Evo IC spray isn't automatic, you have to press and hold a button to activate it when needed


ahh i see well if thats the way the evo boys have done it i may set mine that way but maybe have it timed so when you press the button it sprays for 20 seconds
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