PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[conradelektro]

hi Conrad

the most 'efficient' config i've been able to achieve has been to use a different approach to Looping and DC Decoupling and remove the tertiary winding altogether
(see second schematic below)

hope this helps
np
http://docsfreelunch.blogspot.com

@nul-points: thank you for (re)posting the circuits.

What is a useful value of C1 in the second circuit?

What kind of coil is L1 (number of turns, material) in the second circuit?

Greetings, Conrad

[JouleSeeker]

  Let me hasten to add that I plan to place into the calorimeter (in about two weeks, when Prof H gets back from Europe) -- in separate tests with a "standard" cap for the input power:

1.  the "original" sj1 circuit

2.  my build of the Xee2 circuit, which runs for about 18 minutes on a 10,000uF cap

3.  my build of the NP circuit shown on the previous page (and earlier), still working on it...

4.  I may also include Chris' circuit discussed early on in this thread.

I haven't found any other circuits yet that look promising enough -- and SMALL enough -- for the calorimeter tests. (E.g., Laneal's test was not an apparent improvement; but I could reconsider this.)  Suggestions welcomed!
    The calo.'s cavity is the size of a D-cell battery, the one Prof H has talked about letting me use.  (There are larger calorimeters of course, but those would be for future studies...)

@NP:  About your circuit with bifilar on the toroid (not trifilar), I have questions:

A.  Is the 1N5817 necessary?  it appears to have a breakdown voltage of 20V, which does not seem particularly relevant to this circuit.  I could get the 1N5817 if you recommend it, however.

B.  Your L1 of approx 0.5mH -- what kind of inductor is this?  or can it be an off-the-shelf inductor of ~0.5mH?

C.  When you say T1 is approx 50:50, are you referring to 50 windings in each?  on what type of toroid?

[JouleSeeker]

PS --  if anyone (including Xee2 and NP and Chris) wishes to send me HIS own DUT, I would be glad to put it into the calorimeter for testing, assuming I can get enough time on the calo...  As long as I'm not asked to sign a long-term NDA (I could understand signing a short-term NDA and giving the inventor the calorimeter results immediately following the tests.)

Note again the present tight volume restriction -- it needs to fit into a cylindrical cavity the size of a D-cell battery; and very thin wires are permitted leading from the outside to the DUT.

[nul-points]

I am sorry my tests have no meaning for you
[...]

those are not my words

this is what i said:

[...]
in that case, however, the results will have no meaning for comparing between different approaches and circuits - which is why Steven asked people to make their measurements within his guidelines

[nul-points]

 

[...]
What is a useful value of C1 in the second circuit?

What kind of coil is L1 (number of turns, material) in the second circuit?

Greetings, Conrad

C1 mostly decides the repetition of the o/p pulse 'burst' (while keeping other component values the same)

i've been using values between 0.1uF and 0.001uF, as required, to fit within Steven's requirements here for low-power consumption, LED visibility down to lower voltage supply, and less-visible flicker

L1 is approx 4 metres of 0.45mm enamelled copper, wound on a ferrite tube approx 30x15mm OD (obtained from Maplin, material unknown)

L1 decouples the DC supply from the oscillator and allows the LED to be driven by the resulting voltage swing across the oscillator as a whole
(providing for the possibility of some looping of energy back to the supply after each pulse)


greetings
np


http://docsfreelunch.blogspot.com