Hey Kris once again thanks for all the help.
This is probably the the finalised circuiting i plan to build. I'd thought I'd run it through you in case of any mistakes.
Below is the attached drawing I made of the circuit.
Hopefully you can read all that crappy handwriting :)
Also I'd like...
Ah that's a relief then.
But are you saying I can use the same power supply as the one powering the fans?
I was just worried that too much current would flow through the controller (powering the controller itself) because electronic circuits usually have a low current allowance otherwise it...
Ah man you actually found the catalog for the product. I had a look and it helps visualise it much better.
I think I will go with the kit from jaycar but I do appreciate you designing that circuit for me.
I might give it a go in the holidays (when I'll have more time to troubleshoot ect) and...
So do you think the way the temperature controller needs only one input and output directed through the black box, where the current will go directly from the adapter through the relay then to the fans?
Yes PC case fans draw pretty low amps and a 12V 0.5amp would be considered a high powered...
Ok I'll probably go with that then.
For the DC power supply, I'm thinking of getting this (http://jaycar.com.au/productView.asp?ID=MP3486&w=12v+adapter&form=KEYWORD) it's 12V 1.5Amps.
The fan's that I'll use will be 12V DC, but the wattage and therefore current of each will vary up to 0.5Amp...
I'm not sure which one would be better. If they do the same thing then I'd prefer the cheaper one. I think 50 degrees is suitable but then again it would be nice to have an adjustable one in-case.
Ah thanks a million,
also I think i've found something I could use (http://www.jaycar.com.au/productView.asp?ID=ST3831)
So I could run the "ON signal" thru it and after 50 degrees it will switch on and the fans will run.
I'll wait and see your circuit before I start thinking more than necessary...
Yeah I looked some fans and DC adapters, they most are 12V.
The chassis (fan and controller) will be ontop of an oil heater (yes, thats our project) so the hot air will waft upwards. The exact temperature isn't critical but the point is to switch the fan on when the oil heater is hot (and thus...
Hey thank you greatly Kris for the quick (but detailed reply).
1) I've seen thermostats before but they are all the wall mounted ones with displays. Are you suggesting I can use one of them? Or are there simpler, cheaper ones that do the same thing without the display. If so could you give me...
Hello, I am in a bit of a pickle but I won't be demanding or expecting answers and the complete solution from strangers.
A bit of a background: I'm designing a project for university, there is two weeks left, and I have minimal circuit designing skills. I have taken a electronics course as part...