Successful TPU-ECD replication !

[ronotte]

Hi all,

yesterday evening I tried to rectify and level the positive peaks voltage on my ECD Zero line, I got more than +280VDC that I routed to only one side of a spare coil parallel winded on one of my 2 CCs.

Well I noticed about a 5% increase of light output from my 60W lamp and a sharper sweet point around 35 Khz. But soon after I heard internal (inside the CC) HV discharge noise so I had to stop everything! 
Of course the secondary parallel coil winding (enameled copper wire) did not withstand the ddp. Similar results was obtained just hooking up the P.S output +12V to the same coil). I wonder if I can bias the whole Mobius collector directly and how?  ...perhaps trough a capacitor?  Any help wellcome.

The lesson is: do bias the ring in some way with DCV more than 11V.

Roberto

[ronotte]

@ Otto,

I've not seen any PICTURE yesterday!! please if you can re-send them . Thanks.

So finally you've got a chance to build a new set of oscillators!!! Well now you can follow several paths:

1 - use Just one DDS20 kit function generator  (cost in kit about ?65 ...I can give you every details...Meggerman (rob) discovered this kit that's sold in Germany) This is a digital syntesized oscillator 0.1 Hz resolution, freq up to MHz range; it has a nice LCD display and you can vary the freq just tapping a momentary switch...it has also 9 memory where to store freqs. This unit has a high speed transistor fot squarewave output. You can connect it to a divider :n and so obtaining a synched 3 output in a very easy way (I can send you the diagram...really easy ..only 2 chips). Summarizing: 1 function gen (you must provide it with +12 and -12V PS) + 2 chips to obtain :3, :5, :9 necessary for the 3 CC's ECD for automatic rotating magnetic field (freqs posted in this Thread some time ag?...I can send it to you) + MIC4426/27 in order to drive correctly the power Mosfet (remember to put the MIC and the Mosfet not more far than 1 cm.

2 - Use just 3 DDS20 kit to provide the 3 freqs...but in this case no easy way to get them synched!....but the operation is this time similar to that you are used.

3 - Use just a complete home-brew solution like the one I posted some pages ag?.. that was a complete solution! I can design for you a simpler and cheaper way using the CD4018 instead od CD4059 (expensive).

Roberto

[MeggerMan]

Hi Otto,
If you are interested I have put all the details about the DDS 20 here:
http://www.overunity.com/index.php/topic,2650.msg38239.html#msg38239

I am working on a -5V supply for it and I have 3 x aluminium cases to put the 3 x DDS 20 boards into.
The -5V supply based on TPS6735, will use all surface mount components except for the LM7805 (re-used component).
http://focus.ti.com/lit/ds/symlink/tps6735.pdf

I ordered some SMD 0402 resistors (not for this project) and I think they are a bit small to work with (1mm x 0.5mm).
Regards
Rob

[otto]

Hello all,

@Roberto,

I will use your design a few pages ago.

Otto

[otto]

Hello all,

@Roberto,

I forgot.

The mag amp is on page 16, Bruces TPU theory......

Or just google it. Nice stuff. No, dont think "thats it". But the point is that we have seen such things in the 15" TPU and the 6" TPU has also some little coils in the center...maybe, just maybe...

Otto