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New Ignition coil specs seem correct to you?
Posted: Wed Dec 05, 2012 11:37 pm
by Beretta1234567
Hey everyone, I was looking at ignition coils and I was wondering if anyone can confirm this.
Primary Resistance: 0.35 Ohm
Secondary Resistance: 7.8 K-Ohm
Turn Ratio: 80:1
Primary Voltage: 12 VDC
Secondary Voltage: 40,000 VDC
Primary Current: 35 Amps.
Secondary Current 5.12 Amps.
This seems wrong to me. Isn't the ICM connected to a 20 Amp fuse? Unless there is resistance within the ICM that I don't know of, this should be popping the fuse.
Side note: do you think the coil will burn up if I used it as a transformer to build a 12 VDC powered tesla coil? lol
Re: New Ignition coil specs seem correct to you?
Posted: Thu Dec 06, 2012 7:56 am
by 3X00-Modified
It's not called R&D for nothing... Try it and let us know... lol
Re: New Ignition coil specs seem correct to you?
Posted: Fri Dec 07, 2012 7:25 am
by Beretta1234567
3X00-Modified wrote:It's not called R&D for nothing... Try it and let us know... lol
Sorry, but I dont know what you mean by R&D.
Re: New Ignition coil specs seem correct to you?
Posted: Fri Dec 07, 2012 8:00 am
by 3X00-Modified
Research and Development...
Re: New Ignition coil specs seem correct to you?
Posted: Fri Dec 07, 2012 8:19 am
by Beretta1234567
3X00-Modified wrote:Research and Development...
Got it now. Thanks lol
I kinda figured win win with this post. Coil specs posted and a question asked. (Couldn't seem to find coil specs when I searched)
Re: New Ignition coil specs seem correct to you?
Posted: Sat Dec 08, 2012 11:59 am
by RobertISaar
coil resistance specs are believable.
the ICM actually limits current/voltage to i think 5 amps. if it allowed full current to pass through, it would most certainly kill fuses, along with generate a lot more heat in the ICM/coils. it's actually why they use a ~5mS dwell period, running a full 12 volts through them would allow the coil to saturate somewhere in the area of 2mS.
Re: New Ignition coil specs seem correct to you?
Posted: Mon Dec 10, 2012 3:28 pm
by Beretta1234567
RobertISaar wrote:coil resistance specs are believable.
the ICM actually limits current/voltage to i think 5 amps. if it allowed full current to pass through, it would most certainly kill fuses, along with generate a lot more heat in the ICM/coils. it's actually why they use a ~5mS dwell period, running a full 12 volts through them would allow the coil to saturate somewhere in the area of 2mS.
Okay I get it now. This reminds me of a PWM signal but for a very short brief time frame.
Then all I would need is a power resistor if I wanted the coil at constant on. lol