Selfrunning cold electricity circuit from Dr.Stiffler

[DrStiffler]

@drStiffler
In one of your previous posts you mentioned you noticed dinural effects from the SEC. Are you still of the same opinion and
did your tests confirm this

@AhuraMazda
I have not discarded something strange, but the calorimeter is the way to prove it and there are some basic problems in repeated runs. Once run it has to rest (cool) until is reaches an equilibrium state. I just today finished full automation using the LabJack U12, this way I can program it to run without human presence. Also I have modified the unit so the heat exchanger water can be replace without changing the calibration, use a long stem pipette to suck it out and replace with cool water, this cuts the wait time to a third of what it was.

I will be looking further into my statement over the next week or two. Will post here any meaningful results.

[Loki67671]

Quote; Answers added to quote in RED.

@Loki

A few minor(?) suggestions. OK, they actually are not so minor and would be the exact kind of issues identified and solved in review meetings. Thank you for the RF layout tips.

The Black wire coming from the edge of your board to the base coil (assumed ground), It is in fact ground and will be moved to the bottom side of the board, shortened, and decoupled as suggested could be a slight problem due to length and radiation. Could you decouple it at the coil? (cap back to V+) so the only high level RF on it will be only by small induction as it lies across the board from the coil to the ground rail.

The White wire feed from the Exciter collector to the power coil, it looks also to be rather long. Maybe a bit shorter. Yes it is long and is not soldered into place yet. I always leave extra wire when prototyping a circuit and until a layout is decided upon. This wire will be as short as possible and directly routed from the exciter collector to the coil. No loops, bends, kinks, or points hopefully.

If to much work to change now, maybe later, but may make things a bit more stable.
It actually winds up being more work later on and I am finalizing this build for initial power-up this weekend.

@Dr. Stiffler,
The points and suggestions are well taken and quite valid. They will probably save me a ton of time. Thank you sir! Oscillators can be strange creatures indeed! The freaking UPS guy didn't deliver today either. Tracking has the package about three hours away but the items haven't moved since the last time I checked it. Knew I should have had them shipped AIR. Damn!

This board in the pictures will be my working model for the bench. It will see many changes and loads. The board that I will run the COP testing on using the calorimeter will use the exact circuit layout, or as close as I can get to it, as you have posted.

Best regards,

JIM

[Loki67671]

But UPS man is delivering today 

[DrStiffler]

One of those tongue in cheek sayings, 'Bigger is Better'. One might wonder it this applies to a SEC 'Exciter'? Well maybe not everyone, but for those that might.

The first pic is of the VLT (very large tube) 'Exciter', followed by the spectrum of its output, followed by a comparison of a Small tube and the Large tube. As anyone can easily see, there is a considerable increase in spectral energy with the larger tube.

[DrStiffler]

Someone already emailed me and ask what was the coil inside, was the end shown in the picture all there was.

Well no. Large tube requires a large coil. The following shows the coil along side the tube. Isn't it interesting what high frequencies come from such large thing?

@Loki
Your large litz wire coil may be full of interesting tings to explore :-)