PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[nul-points]

 

[...]
@NP:
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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?

aha - now it's my turn to go back and read the thread!  i've been re-constructing one of my circuits into a format for you to fit into a 'D' cell volume!  but it sounds like you intend to fabricate each of our circuits yourself?    LOL

my multi-toroid setup wouldn't fit the space requirements, so i've rewound my coil and inductor on ferrite tubes, in solenoid form

the cores & L1 winding are as per my previous posting just now to Conrad
(30x15mm OD, 7mm ID, ferrite); the oscillator coil is a bifilar wind of 2 strands of approx 3 metres of 0.45mm enamelled copper

C1 is 0.001uF; Tr is BC547

the diode(s) used for DC biasing of the transistor isn't critical - i'm just using the reverse leakage current as a high impedance supply for the base, rather than a resistor - but it's a question of 'select-on-test', unfortunately! 

on the unit i've just been making to send you, i'm using a 1N5817 in series with an OA93 to give reasonably flicker-free LED operation down to below a volt, with a power draw similar to my previous results obtained with the larger toroids

i'm happy to continue finishing off this more compact version and posting to you, c/o BYU, if that helps (assuming Calr. availability timing is met)


let me know what you think

thanks
np

http://docsfreelunch.blogspot.com

[xee2]

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.

Normally, efficiency is the ratio of input power to power delivered to a load. If that convention is followed, only the load resistor needs to be put in the calorimeter.

[conradelektro]

C1 is 0.001uF; Tr is BC547

thanks
np

@nul-points: thank you for providing the details.

Concerning the transistor: I understood you are using a PNP-type transistor (in the discussed circuit 2), which would be the BC549?

Greetings, Conrad

[JouleSeeker]

aha - now it's my turn to go back and read the thread!  i've been re-constructing one of my circuits into a format for you to fit into a 'D' cell volume!  but it sounds like you intend to fabricate each of our circuits yourself?    LOL

my multi-toroid setup wouldn't fit the space requirements, so i've rewound my coil and inductor on ferrite tubes, in solenoid form

the cores & L1 winding are as per my previous posting just now to Conrad
(30x15mm OD, 7mm ID, ferrite); the oscillator coil is a bifilar wind of 2 strands of approx 3 metres of 0.45mm enamelled copper

C1 is 0.001uF; Tr is BC547

the diode(s) used for DC biasing of the transistor isn't critical - i'm just using the reverse leakage current as a high impedance supply for the base, rather than a resistor - but it's a question of 'select-on-test', unfortunately! 

on the unit i've just been making to send you, i'm using a 1N5817 in series with an OA93 to give reasonably flicker-free LED operation down to below a volt, with a power draw similar to my previous results obtained with the larger toroids

i'm happy to continue finishing off this more compact version and posting to you, c/o BYU, if that helps (assuming Calr. availability timing is met)


let me know what you think

thanks
np

http://docsfreelunch.blogspot.com

  For the Cal'r test, I'd much rather have your device to test, NP!  so glad that you are building a version that will fit into the tight space. 
The test will not be until the week of July 11th, and that if Prof H agrees...  I have a family trip planned starting July 18th, so I hope the cal'r tests can be done the week of July 11-16... that's my goal. 
Post:  PO Box 325, Spring City, UT 84662
UPS or other shipping:  265 East 200 North Street, Spring City, UT 84662

Thanks so much for working with me on this, NP!  I hope we succeed.
It may take a few iterations I suppose.

  @Xee2 -- correct, one could just put the "load" alone inside the calorimeter, and I'll do that for you if you request that be done.... Just define what goes INTO the cal'r and what stays outside. 

This makes some sense, but note that by putting the entire device inside, we measure the TOTAL heat output, and have a check on things -- for if the cal'r is working properly, the "efficiency" should be UNITY theoretically for each device, that is, the cal'r should capture the energy initially stored in the cap -- now  in the form of heat, integrating from all elements of the DUT.

If  "excess energy" for some reason is dumped in the toroid (for example), then we will still see this IF we place the entire circuit into the calorimeter.

[Mk1]

@all

In the old days when they spoke of computer core it was referring to a bunch of toroid wired together , some for logic operation some for memory . The later one dose imply storing energy ...

I also wonder if you have seen this

http://www.youtube.com/watch?v=w54lxNS3Hus


Basically i am pulling the secondary load without loading the transistor .

The coil it self goes one way and comes back over it self  (a la bifilar ) and cross in the center of the toroid .

Mark