Partnered Output Coils - Free Energy

[tinman]

Tinman,

Wierd...

It sure sounds like your DCR/continuity is OK. 






PW

Just to humor me, consider repeating the test similar to those of your previous traces (primary drive/scope connections the same), but with a battery in series with the secondary/bulb.  Use a lower voltage battery (1.5 to 3 volt) sufficient to see the DC offset on the trace but keeping the DC saturation of the core to a minimum.  This will allow us to watch the DCR/continuity while being driven similarly to previous tests.

Do you want the positive of the battery on the high side,or low side to see the negative offset better?.

I wouldn't blame you for not bothering with the above test if you feel 100% confident that your windings are not opening up during your tests.  Although I do admit this open trace possibility sounds like it is rapidly becoming a "dead horse", those secondary traces sure look consistent with cap coupling somewhere (all connections, test leads, probes, and scope inputs verified?...) and I would want to rule that out 100% before going further.

Happy to do so.

Also, I am assuming that one side of the primary and one side of the secondary are electrically connected via the scope probe grounds.  Consider, while repeating your test, connecting together the leads from the primary and secondary winding being used for the scope probe ground connections.  That is, twist one of the primary and one of the secondary leads together and use that junction for both scope grounds.

Happy to do so.
The scope grounds are common,but there is no notable difference to either scope trace when i disconect either ground from either coil.

I would then consider repeating your tests while measuring the bulb current using a low inductance/resistance CSR in series with the bulb.  Connect one end of the CSR to the interconnected primary/secondry winding junctions (as above where both scope probe grounds are connected) and connect the other end of the CSR to the bulb.  Probe the CSR/bulb junction.

Will do so tomorrow,but bed time now lol.

[picowatt]

Just went and checked PW,and both are good. Hooked globe to 12 volt battery via each winding ,and we have 12v @ 620mA-and a bright globe.
The wire sizes are .55mm and .61-so preaty hard to break. The liquid steel is also non contractive when drying.
There is something very different about the magnetic field at the center of a toroid to that of the out side field.
This one is looking good so far,and one must remember-im not using the best core material. My next casting will be a metglass core,which i hope will bring even better result's. Tomorrow i will be winding a 30 turn coil around the outside of the core,so as it matches the turn ratio to that of the inner winding's. I will then conduct the same test,and post result's.

Tinman,

When potting, consider using spaghetti over your secondary leads and a wrap or two of tape over the secondary windings and covering the spaghetti ends coming off the inner core.

I've had potting issues in the past (SMT PCB's) where I ended up using a silicone conformal spray coating prior to potting. 

Even low shrink/swell potting compounds have "some" shrink/swell, so there remains some inherent stress within.  Additionally, there is also stress from mismatched thermal COE's.  These stresses/internal movements are very small and tend to produce micro-cracks in wires and components.  I had a small 100mHy choke on a series of potted boards that produced very weird and sporadic failures traced back to potting stresses.  The choke would act like there was a capacitor in series with it when it would intermittently fail.  A conformal silicone pre-coat eliminated the issue.

PW

[gotoluc]

Hi Brad,

great experiment idea!   thanks for sharing.

It would be interesting to see what an AC input will do instead of pulsed DC.
If you have a audio amplifier you could use your signal generator on the input of the amp and your toroid primaries on the output.
You could start with a sine wave input and sweep the frequencies to see if it performs any different then with pulsed DC.
You could also attache you scope to the primary using a shunt to measure voltage, current (across shunt) to see phase angle.

All the best in your experiments and thanks for sharing

Luc

[synchro1]

I found the use of a "Bucked Coil" secondary in Bruce's latest "Self oscillating Circuit" video interesting:

https://www.youtube.com/watch?v=aU8NjL1lomQ

[shylo]

Hi Tinman, Do the inner windings operate on either primary, but probably at different frequencies?
Also do both operate at the same time?
Where do you get that putty ,I'd like to try this.
Thanks artv