Joule Ringer!

[Feynman]

Preliminary measurements may indicate Joule Thief has COP>1.  (COP = 1.08 to 1.4 somewhere).   Results pending community assessment and further confirmation.

http://www.overunityresearch.com/index.php?topic=717.msg11577#msg11577

[lanenal]

It might be of interest to replicators to make it as simple as possible, I would like to post a 2-coil schematic. Basically, the trigger coil and the power coil are replaced by one coil that actually performs both functionality.

lanenal

Edit: some comments are in order.

1. The number of turns are not specified, you may try 100:100 bifiler on a toroid or something, as a starting point, then increase the turns on the right side (with the CFL).

2. If the voltage is not high enough to lit the CFL, you can try put a magnet near the core (this idea comes from slayer who discovered huge voltage increase when a magnet is nearby a big joule thief.

3. The idea implemented in the Kickback Joule Ringer (a few posts before) to kickback the energy stored in the driving coil can be incorporated into this one almost as is.

While we are waiting lasersaber, I am stretching my legs and get myself ready by playing with the joule thief kind of thing, but reversed somehow (the post above has its joule ringer correspondence with circuit attached). And it worked just as I have expected! Tomorrow I will see how long a cap will run that thingy. See below for a comparison of the traditional JT and this reversed JT.

Note that when the LED is on, the battery is getting recharged -- that's the major difference.

lanenal

[Feynman]

Okay, so further tests indicate the COP>1 operation possibly accomplished by PhysicsProf, if the evidence holds and the circuit is replicable, probably does not apply to all Joule Thieves.

The vast majority of Joule Thieves, at least with conventional JT circuits, are probably in the range of 60%-90% efficiency.  The way to determine this is to integrate the area under the Power_in vs the Power_out curve for a unit of time (t), where COP=Power_out / Power_in, and then average this value over long periods of time.

COP Measurement in JT:
Lanenal has determined an excellent method of measurement of JT circuits for Power_in vs Power_Out by dividing the circuit into sections.   Lanenal's measurement methods can be found here:

http://www.overunityresearch.com/index.php?topic=717.msg11528#msg11528

Most of PhysicsProfs JT circuits were COP<1.   He has found one which is apparently overunity.

PhysicsProf's COP=1.13 Performance may be due to PHASE issues in Joule Thief
PhysicsProf, the individual who managed COP=1.13 performance in a JT, could originally not replicate his overunity COP>1 setup.  Most Joule Theives he tested produced COP<1, with COP around 0.6-0.9.

PhysicsProf's abnormal Joule Thief which appeared to produce COP>1 had different phase relationship to itself!  The circuit's phase was strange.  The abnormal scope shots are attached.

Upon discussion, he has managed to replicate the original waveform with a COP around 1.0 by replacing the JT LED with a 1K variable resistor.  Tuning this variable resistor reproduces the abnormal phase issues, but not the exact COP>1 waveform, on the scope. 

http://www.overunityresearch.com/index.php?topic=717.msg11707#msg11707

So these JT phase issues are promising, but need replication.

[ramset]

Feynman
You have to resize the images,Or we have to walk back and forth to read this.

Thanks
Chet

[Feynman]

Okay, got it