Pulstar Pulse Plug

[Jetijs]

Ok, so I took one of them apart to see what is inside. Here you have some pictures:















You can see that there are no coils in the spark plug, but the metal rod inside the spark plug is unusual shaped and all the metal parts are connected together via a pressed powder layers. Usually all the sparkplugs have a simple metal rod inside that connects the positive side to the resistor, but this one is unusual shaped. I think that this shape does increase the surface area of the plug thus increasing the capacitance by some picofarads, also there is this metal ring on the outside of the ceramic housing and I have not see such a thing on other spark plugs (I have disassembled quite a few). I believe that such an arrangement works just as a capacitor in parallel of the spark plug. And we can see what happens if a capacitor is connected in parallel of the plug in these videos:
YouTube - spark plug/capacitor test
YouTube - HV AC test

Ozicell, can you do an experiment? Take a high voltage capacitor with a capacity of some hundred picofarads and attach it in parallel of your spark plug. The voltage rating of the cap should be in the kV range. Maybe even put some of such caps in series so that the HV arc can not jump across the cap leads. See what it does, it should improve the spark.

[Aaron]

peaking capacitor

The Pulstar plug is an attempt to put the Direct Hits technology inside the plug. Both are from the same people.

It is simply "peaking capacitor" technology and works with a capacitor a few hundred picofarads of whatever voltage is equal or greater than the gap breakdown voltage. It helps get a more robust spark but is not the same effect as the diode/cap method. With enough pf's in the cap, the effect does grow but gets to the point that they can't charge fast enough...that is why they limit it to a few hundred pf's.

[vzon17]

Capacitors

I found some nice capacitors fo real cheap, 35,000 volts

.003uF 35,000 Volt Capacitor-The Electronic Goldmine


v

[Lemontree]

some guy told me that some enthusiasts sometimes used spark plugs from aviation motors, like plane "kukuruznik" and so on. so, the better spark can make some diference in burning effectiveness.