Hey Guys,
I only had enough diodes on hand to make four HV blockers for the plugs, six strings of 10 diodes each and then paralleled together and hooked to 4 of the 8 plugs. I hooked up to every other plug, no problem figuring out which plugs are hooked up to the diodes, that's for sure! wiring up the six strings of ten 1N5408's per plug seems to be working just fine. I am ordering the other parts first thing in the morning and will probably post a video at least of the bare minimum of the circuit I have working. So, see yall tomorrow. Later.....................Mike
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Hi, kalnai.
As you can see, the plasma spark system recquires resistorless spark plug wires and plugs. That means the RF problems is very probable to occur.
In fact, although I have not put the plasma system on my car yet, I have such type of spark plugs and wires. And gues what: one of the electrovalves does not function properly anymore. Let's hope it will do if I put normal wires.
I don't know about your car, but I think some anti RF protection should be used.
All the best.
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Hi everyone, just have a question. Do we have to worry about any RF trouble? Will Gregs system work with a newer car with a computer and fuel injection? If there are RF problems, can anyone think of a material or something that absorbs or cancels RF that can be put around sensative instruments under the hood?
Thanks,
kalnai
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Thanks Greg.....
Hey Greg,
Thanks a bunch for posting that info, that's exactly what I needed to know. As for the 5408 diodes, I found Fairchild 1N5408's online for $0.10 each. If I need 60KV of blocking per spark plug, what you are using correct? I would need 60 ea. of the 5408's per plug. Translates to about $50 total plus shipping. If I used the NTE-517's at 4 ea. per plug X 8 plugs, cheapest I found was $6 each, would be about $200 for a V-8.
My time on the clock to assemble the diodes into strings should be less than the difference in price. Leads me to a question for you. Since you and I both have better results with parallel diode arrangements, do you think I would be OK with six strings hooked parallel with 10 diodes in each string per plug? I will probably elect to go with the larger diodes for the final installation to limit the required amount of space to install, along with a little less voltage drop, but first I need to be cost effective and make it work on the bench.
Thanks for the confirm on the ultra-fast diode importance at the cap and coil, I figured they were crucial. I already have my circuit working on the bench as is at 110V, your circuit will allow me to isolate and stabilize my plasma spark, shutting down the feedback between the 12V and the 110V. SUCH CRUCIAL work you have performed in all of this, I can't thank you enough for everything you have figured out here!
Well, looking forward to your comments on the couple questions above, then it's on-line to order the parts. I'm so excited about the whole thing, I can't even sit still in front of the computer!!
Later...............................Mike
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quote self & pic of SSR
Hi jstadwater,Originally posted by gmeast View PostHi jstadwater,
The HV diodes are 15KV blocking and .5A ... which is why the parallel.
...............................................
I may have already stated the Mosfet Packages are the Crydom D2D12 200VDC 0-32VDC control input: source = Mouser.
................................................
I'll check back often. Peace,
Greg
Here's a pic of the SSR:
Greg
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Bug
Hi Kinetix,Originally posted by Kinetix View PostHi all.
Greg, nice work indeed. I'm glad it works. How does your Bug accelerates now on the street? Keep us updated with the mpg (L/100km) too, please.
jstadwater, the goal is not to obtain any type of blow. We need it only between the spark plug's electrodes.
If you want us to help with the protection issue, you should give us the schematic of that ignition to think at, and the wiring in your setup, too.
All the best.
The Bug has never been this peppy! I don't have to choke it ... which speaks volume to the ability of the plasma spark to ignite cold, poorly atomized, poorly mixed fuel-air mixtures. It's very exciting. With such an enlarged envelope a GEET application looks very good indeed!
Thanks for your interest,
Greg
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Car air solenoid By Hector
Waky but might be of use
--------
Car air solenoid
taking a car spark plug the end is carefuly machines as to remove the
ceramic component the plug piece then is worked to insert an end ring
to act as valve seat , a pencil long drink stirer alike rod with a
ball at its tip is used as main valve , such tip is pulled back by
means of electric solenoid in a sealed container to actuate the tip
to open the spark ring end as to let air inside cylinder as it tops
the compression cycle to cause expansion alike combustion one, but NO
combustion).
The end ball seals the spark tip having all the compressed energy
released in cylinder not wasted in presurizing & heating a hose.
It goes directly to cylinder .
This design must be able to ROTATE as to PERMIT direct USAGE of
unaltered spark plug hole , and valve can be made as long as required
to fit any car motor design, tip also designed with UNIVERSAL adapter
to fit converted Spark plug injectors to any car engine.
ou can prepare a solenoid AIR valve with old spark plug
and time it with the same ignition coil timing contact ..
Use compressed air as fuel only compressed air,reuse the COLD air
exaust recompressed to gain energy by 1/273 expansion volumen of its
cold state 1deg per 1/273 expansion.. using recovery compressor RV
driven.
read leroy rogers air car patent .
HectorLast edited by ashtweth; 10-07-2008, 09:40 AM.
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Capacitors
Hi all,
Here's what I've found at Newark...
This one is a kick in the butt.
Imagine... 1250 joules of pure pleasure.
NTE ELECTRONICS | NEV10000M6.3GI | Capacitors | Passives | Newark.com
You like to play with higher voltage?
Check this one.
CORNELL DUBILIER | 330471T200HT2E | Capacitors | Passives | Newark.com
Keep up
United we stand
Pink Floyd
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Source
Originally posted by gmeast View PostHi all,
Has anyone come across a good source for capacitors? I've been using surplus store Caps for the plasma CDI. Does anyone know about photo flash caps?
Thanks in advance,
Greg
Have you tried Digikey or maybe Newark?
Digi-Key Corporation - USA Home Page
US - Electronic Components Distributor | Newark.com
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vw combin average mpg
That is a very encouraging result from Bills journey and video report.
Does anyone have an idea of the normal mpg for that type of vw combi?
He didn't provide that statistic in the vid which is fairly important as a reference for comparison...
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capacitors
Hi all,
Has anyone come across a good source for capacitors? I've been using surplus store Caps for the plasma CDI. Does anyone know about photo flash caps?
Thanks in advance,
Greg
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parts
Hi jstadwater,Originally posted by jstadwater View PostI have decided my circuit will not work in the present config. I need Greg's isolation circuit to accomplish the task. I am ordering the parts next, will continue and post a schematic once I build Greg's circuit. These stock ignition modules are just too sensitive without complete isolation, already killed another one. Smallest fuses I could find at the parts store were 2 amp, the fuses are still alive but the ignition module died. I wanted to build Greg's super isolated circuit anyway, no better time than the present. Later.....................................Mike
@Greg
Is this the latest parts list to build your circuit?
4 ea. non resistor spark plugs
1 ea. 47uf x 450 V cap
1 ea. 470 uf x 450 V cap
1 ea. 12 ohm x 50 watt resistor
1 ea. 3k ohm x 1/4 watt resistor
2 ea. power Mosfet w/driver
1 ea. FWB rectifier
1 ea. 1:1 x 150 VA isolation transformer
1 ea. 400 watt 115VAC inverter
12 ea. HV Replacement Microwave diodes
2 ea. 1000V x 3A ultra fast recovery diodes
1 ea. standard automotive coil
1 ea. modification to make the distributor points act like a SPDT switch
1 ea. fuse holder
1 ea. 1A fuse
Peace,Greg
If so, could you give me the specifics as far as part #'s, types, and what sites you ordered them from. I thought you already listed the specifics, but I can't find it anywhere. I just want to make sure I build the exact circuit you have designed, as it is perfect as far as I can see. Also, can I use 1N5408 diodes in place of a single HV diode in your schematic? Which ones, series or parallel, and what are your diodes' voltage blocking rates so I know how many to use? I imagine the ultra-fast recovery ones for the mosfets must stay, right? Sorry to be a bother, I just want to get it right the first time. Thanks sincerely for all your hard work............................Mike

The HV diodes are 15KV blocking and .5A ... which is why the parallel. You can use whatever they decided for in the Nexus. I used parallel HV to get the amp rating and avoid the multiple voltage drops of so many diodes in the alternative. A string of diodes is much cheaper than what I've used ... I have not tried strings but should work nonetheless. The Ultra Fast Recovery diodes are soooooooo important in that they protect the discharge and charge Mosfets from Back-EMF on switching. I know it seems silly to use one on the Cap charging circuit but a rapid discharge from a capacitor can generate what appears to be a damaging 'spike' ... a diode here is cheap and worth the wiring as a safeguard. I may have already stated the Mosfet Packages are the Crydom D2D12 200VDC 0-32VDC control input: source = Mouser.
I use UF-5408-E3 for the fast recovery protection diodes - one each across the Cap and Coil and their ratings are 1000V 3A. You should be able to use any 5408 axial for the long strings but the faster the response on the diode the less heat will build. I think the UF-5408-E3's cost $0.44 each.
I'll check back often. Peace,
Greg
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I have decided my circuit will not work in the present config. I need Greg's isolation circuit to accomplish the task. I am ordering the parts next, will continue and post a schematic once I build Greg's circuit. These stock ignition modules are just too sensitive without complete isolation, already killed another one. Smallest fuses I could find at the parts store were 2 amp, the fuses are still alive but the ignition module died. I wanted to build Greg's super isolated circuit anyway, no better time than the present. Later.....................................Mike
@Greg
Is this the latest parts list to build your circuit?
4 ea. non resistor spark plugs
1 ea. 47uf x 450 V cap
1 ea. 470 uf x 450 V cap
1 ea. 12 ohm x 50 watt resistor
1 ea. 3k ohm x 1/4 watt resistor
2 ea. power Mosfet w/driver
1 ea. FWB rectifier
1 ea. 1:1 x 150 VA isolation transformer
1 ea. 400 watt 115VAC inverter
12 ea. HV Replacement Microwave diodes
2 ea. 1000V x 3A ultra fast recovery diodes
1 ea. standard automotive coil
1 ea. modification to make the distributor points act like a SPDT switch
1 ea. fuse holder
1 ea. 1A fuse
Peace,Greg
If so, could you give me the specifics as far as part #'s, types, and what sites you ordered them from. I thought you already listed the specifics, but I can't find it anywhere. I just want to make sure I build the exact circuit you have designed, as it is perfect as far as I can see. Also, can I use 1N5408 diodes in place of a single HV diode in your schematic? Which ones, series or parallel, and what are your diodes' voltage blocking rates so I know how many to use? I imagine the ultra-fast recovery ones for the mosfets must stay, right? Sorry to be a bother, I just want to get it right the first time. Thanks sincerely for all your hard work............................Mike
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Thanks Kinetix
I will draw up a diagram of what I'm playing around with. Be back in a few minutes.
Later...................................Mike
Last edited by jstadwater; 10-06-2008, 07:44 PM.
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