madscientist
chilling with these guys.
- Location
- good old p'cola
yep ^^^^^^^^^^^^^^^^^^
it works
it works
indoor jetski waterpark.
- Thread starter the WaTeRhAwK
- Start date
I am not disputing that. Seen and worked on them myself.
Just poking fun at how "a coil works as a capacitor." :biggrin:
Travis, to cut to the chase: A Capacitive Discharge Ignition uses capacitors and diode circuits to double voltage several times (up to 400VDC) and then dumps that into the primary of a coil.
A CDI cannot work without the caps.
You can still have a valid ignition, but it won't be CDI without the caps.
kraqus
Site Supporter
- Location
- Great State of Texas
:dunno:
Benny
Benny
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
yes, an up to date type.
this one is not. it is a capacitive discharge ignition system, even though it doesn't utilize electronic circuitry known to the tech world as capacitors. a gallon jug is a "capacitor", it's just not used in electronics. the coil acts as a capacitor until it's charge is dumped, then it becomes an inductive coil until charged, and the cycle repeats.
just because the system is referred to as a "capacitive discharge ignition system" doesn't mean there's circuitboard capacitors as work in it.
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Motorheads5
Livin the generation gap
- Location
- ketchikan alaska
Well this thread is still worthless lol
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
Motorheads5
Livin the generation gap
- Location
- ketchikan alaska
UUUMMMM You just figured that out ?
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
uhmmmmmm well, I happen to have my own opinion, too, I think you're closed minded to how much a discussion like this is actually worth. it may not be worth much to you, however, I'm sure everyone doesn't share your perspective.
snowxr
V watch your daughters V
- Location
- Waterford, MI
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
if you can't wait, you're always more than welcome to go somewhere else.:wave:
CDI's date back to the 1950's. And even then, they used - hold your breath - capacitors.
By definition, a CDI uses capacitor discharge current to fire the coil primaries.
Despite what you think, a coil cannot act as a capacitor. A capacitor has an electric field between its plates and that field stores electric energy.
A coil has a magnetic field that stores magnetic energy.
If you would like more specific details and the math behind it, let me know.
What you describe is an inductive ignition. Those work fine the way you (sort of) describe, but a CDI it is not.
Before you continue discussing CDI's, here's some reading material you should check out.
http://www.britannica.com/bps/addit...RHEAD-LINGO-CAPACITIVE-DISCHARGE-IGNITION-CDI
http://eu.st.com/stonline/books/pdf/docs/4347.pdf
http://www.madabout-kitcars.com/kitcar/kb.php?aid=475
http://en.wikipedia.org/wiki/Capacitor_discharge_ignition
A capacitive discharge ignition is defined by the use of capacitors. That's how they work.
See the papers I referenced. Note that they describe ignitions pre-dating jetski technology by 30 years. And still, they use......capacitors.
Or were we talking about gallon jugs?
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snowxr
V watch your daughters V
- Location
- Waterford, MI
Do I need 1 or 2 gallon size jugs to fire a 701??
Matt E is correct. A coil itself is not a capacitor. It lacks the ability to store electrical energy like a capacitor. Disconnect the battery, and it can no longer function. A capacitor can release the energy it has stored after the power is turned off.
Matt E is correct. A coil itself is not a capacitor. It lacks the ability to store electrical energy like a capacitor. Disconnect the battery, and it can no longer function. A capacitor can release the energy it has stored after the power is turned off.
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Motorheads5
Livin the generation gap
- Location
- ketchikan alaska
Holy Crap Dude lmao this discussion ? But hey have fun, I guess if I dont like it I should just move on. it was a (hot topic) so I read it wasn't very impressed either lol.
Maybe you should read it :loser:
CoreyLKN
LKN Freestyle Militia
- Location
- Lake norman, nc
So what does a TL system with out actually using TL and a capacitor isnt actually a capacitor BS have to do with an impossible to build indoor wave park jet ski thing?
Im confused :dunno:
Im confused :dunno:
snowxr
V watch your daughters V
- Location
- Waterford, MI
This thread is a TL
They're all brain-children of Travis.
CoreyLKN
LKN Freestyle Militia
- Location
- Lake norman, nc
:werd:
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc
I never disputed that point, however, he's trying to run two discussions together(as usual). I never said a coil is a capacitor, I said it acts as one with this system. there is no circuit board capacitors anywhere on the system, and that's what he's trying to infer. he's saying that for it to be a capacitive discharge ignition that it has to have an actual circuit board type capacitor somewhere in the mix, and that is simply not true. the coil acts as it's own capacitor, it doesn't need one to function. although, it would help it function more efficiently at higher rpms.
a coil doesn't lack any ability to store electricity as long as there's a battery powering it and the circuit is open. once it's closed, the field collapses and it discharges. if the circuit is not opened again, it will continue to step up the voltage from the battery and release it.
the WaTeRhAwK
fryin' up a/m electrics..
- Location
- okc