Successful TPU-ECD replication !

[wattsup]

@Paul

Thanks for the program also. I learned programming in Perl on my own and these functions would be easy to do for an online calculator.

Immediately I tried 3333 hertz.
The first resonant is 6666 hertz.
The Freq. Main and 1st = 4999.5 hertz

So two pulses at 3333 and 6666 = 5000 hertz
Very interesting indeed.

[HopeForHumanity]

I didn't know if this would be of use to anyone here or whether they already have it, but It's a fun little tool anyway.

Expression Tone Generator: 

http://www.download.com/3000-2170-10100942.html

[ronotte]

Hi all,

waiting to find a suitable yoke to play with on my ECD environment, it follows a brief report on first tests made with an ECD/Caduceus
coil setup.

The idea here is to prove the feasibility of a simple arrangement able to deliver power using a magnetic flux cancelling device (Caduceus coil) and an EM field reconstructor arrangement like a simple DC pulsed Collector coil at 90 degree.  So this time there are no Control Coils, Rot. Mag. field, Mobius, etc, but I?m pulsing directly the Caduceus and so generating the needed torsion field.
In this case the Caduceus coil is linear, but longher (34 cm), so the total 'induction/effect' on collector wire should be higher than the
standard ECD case where said effect is limited to the Control Coils lenght (1" for each coil). Again in this case no Control coils so
no 'Cannons'.....nothing.

What about winding a Caduceus onto a torrid shaped support?

On fig 1 is reported the test-schematic and on fig 49, 51 the Caduceus coil & driver sub-assembly and my work-bench.

Caduceus coil
-   Support: PVC diameter 3 cm diam., length 34 cm.
-   Winding: enameled copper wire 0.25 mm diameter, length 7.7 mt., parallel run of 4 wires.
-   Caduceus: 24 crossings. Please note that this is a quick-and-dirty coil?far from perfection?but usable for tests!

Collector coil
-   5 turns of 2.5 mm. stranded copper wire
-   The winding is at 90 degrees. The coil wire goes into the Caduceus and outward as in pic.


The Function generator set to square wave with: Vout=2V, offset =2V, duty Cycle = 50%. A quick run on 10 200 Khz range shows that the lamp is almost always lighted with max between 52 and 105 KHz.  Tried to decrease the pulse input duty cycle: the light decrease quickly!

First best point (max light & min current on PS) on 105 KHz. In this case:
?   PS set to 12V .
?   Current on PS  0.7A.
?   Vout peak (on test point A) +350V
?   Ref pics : 42, 43.

Second best point found on 52 KHz. In this case:
?   PS set to 20V .
?   Current on PS  1A.
?   Vout peak (on test point A) +520V
?   Ref pic : 44.

Third best point 146 KHz. In this case:
?   PS set to 20V .
?   Current on PS  0.8A.
?   Vout peak (on test point A) +520V
?   Ref pics : 46.

Tried to decrease duty cycle:
?   PS set to 20V .
?   Current on PS  0.5A.
?   Vout peak (on test point A) +520V
?   Ref pics : 47, 48.

First considerations
It appears that the power output (in light level terms equivalent) is similar to power delivered to the setup by the PS, a bit better result may be reached using a 60% duty cycle pulse input (pay attention ? the active squarewave portion is now only 40%) at more than 100 KHz.

I tried as well to use a collector with only 1 turn: not big difference!.
Tried to feed directly the Caduceus with sinusoidal inputs from Function generator...NO WAY to obtain any light! (input: 1 freq only).
In this case it will be very interesting to use a mix of 2 or 3 freq....


What it?s lacking here is a suitable feedback mechanism that for the moment I?m still thinking about. The 'Regenerative feedback' should be limited to only the device analog option as it can't (?) be fed to the digital side!  So the Mosfet itself, as is used as a
switching device ...is excluded: what is left of the analog side: ONLY the COILS.... hmmmmm......I've to consider well the Sweet
approach!!

Next step is to do same tests but using 2 and 3 freqs.

Roberto

[BEP]

That little jump into DC on pic 47 is MOST interesting!

[hartiberlin]

That little jump into DC on pic 47 is MOST interesting!

Yes,indeed the DC voltage level in picture 47 is very mysterious !

Can you try to see Roberto, where it exactly comes from ?

Many thanks for these very interesting tests.

Regards, Stefan.