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Hi Mike,

I don't have your experience or knowledge in this field, am not stating anything that’s not obvious nor strictly sticking to your questions, but...

In a just world, to have put in the...

Someone didn't want the rest of us to see it. YouTube has already taken it down.

Thanks, that helps.

Is the current powering the 555 flowing from the battery’s positive to negative post, or the reverse?

What is the function of the capacitor after the diode, before the chip?

Thanks Gary.

I'll confess, originally I thought it was the battery, but then I checked the max. supply current on the 555 datasheet and it was only 200 uA, not 100's of amps like the battery can...

Hi Gary,
Thanks.

I’m assuming the battery is never the source of current to the 555 chip, but that instead it's powered by current from the power windings (produced by the approach of each...

Hi guys,

I had a bunch of unexpected delays (including my laptop dying) and am just now getting back on track.

A quick question. The schematic shows a diode between the top of the power...

Hi Michael,

Thanks for your thoughts.
I should have tried that while I've been waiting for my parts to arrive to make the cap dump.
Now they're here though and I'm going to pick them up...

Hi Gary,

That makes total sense, I forgot about the clamp side of those terminals.

Gary,

I mentioned a couple posts ago that I'd read something saying if several batteries were hooked up (I said in series, which was an error) that those after the first battery would be...

Faraday88,

I don't know the answer to the details you're asking, but I think the "matching" is in terms of when they turn on, so they all turn on at once.

Hi Gary,

That it a great tip. I'll do that too. As for specifics, to get good contact, did you wrap the Mosfet legs around the screws before screwing them in?

Hi John,

I'm not ready to build my "next" cap dump, since I haven't even built the first one, but...planning ahead for when I do, does TeslagenX sell matched Mosfet's in addition to the matched...

Thanks Gary. That's what I needed to know. I'll go with 5.
Given that they won't be matched there will be one that triggers first and conducts the bulk of the current. I imagine it will thus be...

Hi Gary,



Since I'll have (4) 18,000 uF caps, it seems like I should put in 4-5 (unmatched - my only option for now) FET's. Do you know if there's an advantage/disadvantage to having 5 instead...

Forgot to add, thanks for the photos!

Hi Gary,

Do you recall - once the correction was made to the sch. - if the 555 version ever performed well for other experimenters?

I'm getting ahead of myself, but just as you did, I want to...

Thanks Gary,

I made a mistake in my post. I'm actually looking for pictures of a 555 controlled Mosfet cap dump, based more or less on the schematic on page 47 of the intermediate handbook (the...

Hi Faraday88,

Thanks for pushing me to read that book. I will and I'm sure I'll be glad I did.

In the meantime... I'll soon have the parts to construct the Mosfet based cap discharge.

Apart...

I'm with you on the tremendous benefits of beginning by "knowing nothing" (beginner's mind in Zen). That allows us to see freshly, be humble and make our own discoveries. In my case though, I want to...

Hi Faraday,

Good to know I can keep the neon's. I didn't see them in the schematic so I thought they'd been omitted.
I don't know enough about electricity, etc. to follow everything you're...

Thanks Gary.

I got the idea from Aaron. In answering one of my posts over at Energetic Forum about the capacitors, he said..."80v 15k uf is the exact cap John uses in his larger cap dump circuits....

Hi Faraday and Gary,

Thanks. I'll be away for a few days without internet access - will reply when I return.

Cheers.

Thanks. I'd imagined an X going between the 2 sets in series as well, so I'm glad it turns out to be simpler.

So now I have another question, this time about the back EMF and radiant spikes going...

Thanks Bradley. Using your battery example, would it be like this?

7035

I understand that John used 4 capacitors and that they were connected both in series and parallel.
I can understand one or the other, but don't know how to hook them up both ways.
Can someone...