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Sorry a poor explanation but in short you really don't want a free wheeling diode per se. It will dampen the coil output. If you use a regular transistor it actually breaks down when the reverse energy from the coil is created. Sort of like what a free wheeling diode would do. It doesn't really...

Sorry a poor explanation but in short you really don't want a free wheeling diode per se. It will dampen the coil output. If you use a regular transistor it actually breaks down when the reverse energy from the coil is created. Sort of like what a free wheeling diode would do. It doesn't really...

Youtube is your friend. Hundreds (if not thousands) of videos about TIG welding. Why read about it when you can see it in action. Start here https://www.youtube.com/results?search_query=tig+welding

I'm sure you are correct. My description was meant to say that mine gives out short bursts of what he exhibits as a continuous stream. My short bursts are at maybe 4 per second rather than a continuous stream like he has.

Big Clive didn't give a link to the exact one he has there. It seems mine is slightly different inside. But it looks exactly the same outside. I just found it based on appearance etc. Makes no difference really. All the guts are there to rebuild it into a CDI - I figure. I'll reverse engineer...

I went back and looked at the video again. My module operates differently from his. Mine puts out individual sparks with spaces between them repetitively while it is activated. His produces a more or less a continuous arc while activated. Interesting. His would be much better as an ignition...

I did a bit of testing. It's pretty slow at responding to a trigger signal. Too slow I think. The input trigger can't be a reed switch - at least not the ones I have here - not without some sort of snubber across the contacts because there is quite a spark even when you manually touch the...

A possibly useful module for ignition systems. I ordered one and it arrived pretty quickly. I haven't checked how fast it responds to triggering the input. Could be too slow to respond but if it's repeatable, then an appropriate advance in the timing might make up for it. ALSO the input might...

I am aware of it and I have a copy. It's gold as far as windiing your own coils goes. I wound a couple of successful coils from it of a reasonable size. BUT that 20,000 turns of #48 wire (or something like that) quickly discouraged me from making any more. I built a winder but it was too slow...

Your EBay link is bad. But I found it searching by your description. Looks good. As you point out a SMALL ignition coil would also be required. Many moped coils are not that small either. At least compared to the whole size of the current S/S et.al. modules. It's a good start though. Thanks

I suspect Bill Noble's circuit from post 16 probably works quite well. I've seen many similar to it and built a couple. A somewhat robust power supply, a reasonable sized capacitor dumped by an SCR - into a regular coil. Pretty typical stuff. But for me, overall size was prohibitive. Ok if your...

Well. Don I'm glad you're on the case. The math has always been over my head. I tend to work on a "try it and see what happens" basis. I think a bit more up-front math is involved in order to head down the right road to a worthwhile experiment. It seems you are the man for that. I hope you get...

LOL. Small and smaller. Love it. Thanks

Amazing work Terry. I'm glad you are able to soldier on. We all appreciate it and are in awe of your work.

Several years ago I came across some 12 x 12 industrial ceramic floor tiles. They were flat right out the edge. I glued a couple back to back to make them less likely to snap. They are standing on edge next to the work bench and are easily picked up and put on the bench for quick requirements...

I guess it comes down to how much energy is enough. If you look at commercial units such as MSD. They are not small units and - don't forget they still drive a standard ignition coil or one of their super coils. Inside you will find a very healthy high voltage supply of about 450 volts with a...

Fantasitc work as usual Steve. I love your whimsical ideas. As if the small cars weren't enough - lets make a tiny 1/3 scale version. I assume to be powered by your scale Briggs? Too small for kids to drive? Or maybe it will be remote controlled? Too bad there is no NAMES. I would have expected...

I'm from the old school of being able to see the waveform have a defined HV peak followed by a horizontal line burn time where you can see (and analyze) the actual energy conducting in the fuel mixture. Ignition waveform analysis for coil ignitions are readily available on the internet. Such as...

Have fun. It should be fine.

In the end it is just a driver. Although it will drive any coil. So the results will be totally dependent on the coil you choose. Many are being used to drive COP (coil on plug) coils because they are relatively small (compared to the old school can variety). The two-wire Ford coils are about...