building an o2 sim...

[Boosted19]

Alright, I'm trying to make my own MIL elim. I am having a hard time finding a 12 ohm resistor that can take 12 watts. Anyone know where I can get all my parts? Radio shack cannot get that 12 ohm resistor that can disapate 12 watts.
I need
1 mega ohm (1,000,000 ohms) resistor
1 1uf (micro-farad) capacitor
1 12ohm resistor that can disapate 12 watts of current
Anyone know where I can get them?
Thanks!

 

[snox135]

Newark In One should have all of these in stock. http://www.newark.com/jsp/home/homepage.jsp

 

[Eastwood95]

Try another radio shack, not all of them carry the DIY parts. If there isnt another one withing driving distance, their website is another option.

I got all of my parts from my local radio shack about 6 months ago, so if they said they cant get it they are full of shit. Maybe they don't normally carry it, but they can get it.

 

[Locke]

You can wire three 50ohm 10watt resistors in parallel to each other across the heater circuit, instead on the 12ohm 12watt. Three 50ohm 10 watt resistors will give you ~16ohms that will dissipate 30 watts.

http://www.radioshack.com/product/i...+Type/Power+Resistors&fbc=1&parentPage=family

If you want closer to 12 watts, you can use three 50ohm 5 watt resistors. This will give you ~16ohms at 15W.

http://www.jameco.com part #660551

The 50ohm 10W solution will probably get to you quick, is very cheap, and will work just fine.


Ohh, and the other parts you need are:
1 Mohm resistor
1uF capacitor

Hope that helps.

 

[Boosted19]

thanks for the replies so far.. Its ok to stack em up inline like that? You put them in series? Or how do you put them in paralell?







______===_____
_____/______===_____\______ That how you did it in paralell?
\______===_____/
The equl signs are my resistors.

 

[Boosted19]

..______===_____
./______===_____\
.\______===_____/

 

[Boosted19]

ahh got it to work.. dont mind the dots they are just there to keep the pic together then you just run the wire when the all together? am i correct?

 

[Calan]

I can usually find the strangest stuff I need at Mouser...

http://www.mouser.com/search/Refine...cards&Ntt=*resistor*+*12*+*ohms*+*12*+*watts*

Description says 10 ohms, but part number and datasheet says 12.

 

[Locke]

Here is a thread we had last year discussing this same thing. Paul has drawn up a handy diagram and schematic. Should make it crystal clear for you.
http://www.dsmtuners.com/forums/showthread.php?t=246222

Hope that helps you, then.

 

[blazebolt]

I did this and it works, but the 3 resistors get very hot. Just want to confirm if you guys got the same problem and where did you mount it? I don't want to mount something that hot inside the car.

Thanks

 

[Locke]

You could try adding another resistor to the heater circuit to spread the load out some more.