Re: Dell a question about your resistor set up

Posted by Dell (WA) on February 08, 2005 at 13:37:27 from (172.169.171.69):

In Reply to: Dell a question about your resistor set up posted by old on February 08, 2005 at 11:33:30:

Old.........because I am professionally an Electronics Engr w/40yr exp, not a autohouse partsjockey, I suggest 12v frontmount converters use my secret trick current limiting resistor of 0.5 ohms. I have NO KNOWLEDGE what the technical specs are of your "Dodge" ignition resistor is, nor its parts number.

I do know in 1998, that shortly after Standard Ignition started producing their seemingly more desireable modern 12v squarecan frontmount ignition coil, there were a rash of warrentee/failures because the 12v coil was NOT DESIGNED for the typical 14.7v alternator output and it was failing (overheating) due to EXCESS AMPS. (Ohm's Law still rules)

Standard used to include a little piece of toilet paper printed in 6-languages 'cept 'muricum' (but who reads instructions, eh?) advising to use a "current-limiting" resistor of 0.47 ohms with their new 12v coil to prevent coil failures. While 0.47 ohm resistors are common place to real electronics engineering supplyhouses, most 12v tractor converters seem find anything electrical to be technically challenging. (you doubt? check the archives) and 0.47 ohm resistors are NOT COMMON to auto/tractor partshouses. (to my knowledge)

My secret trick 12v current limiting resistor is my solution to the 12v squarecan ignition coil problem, because RadioShack seems to be everywhere and they even have some radioparts including their p/n 271-131 2-pack of 1.0 ohm, 10 watt square power resistors, when connected side-by-side in parallel by twisting their leads together, create a 0.5 ohm, 20 watt squarecan coil current limiting resistor (as originally recommended by Standard) and it works.

Use what ever works for you...........respectfully, Dell the self-appointed sparkie-meister

Follow Ups:

• Re: Dell a question about your resistor set up Jack (NV) 18:07:16 02/08/05 (0)
• Re: Dell a question about your resistor set up old 14:49:13 02/08/05 (0)
• Re: Dell a question about your resistor set up old 13:47:04 02/08/05 (1)
  • Re: Dell a question about your resistor set up Dell (WA) 13:56:02 02/08/05 (0)

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