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Overunity Machines Forum



Lasersaber strikes again. A joule thief king ?

Started by hoptoad, May 01, 2014, 02:54:40 AM

Previous topic - Next topic

0 Members and 7 Guests are viewing this topic.

lasersaber

Quote
In the video http://www.youtube.com/watch?v=Xk35CpCFg1w Lasersaber seems to say that he does not use the DC-DC converter any more. He uses a third winding on the pot core for power feedback to the drive capacitor.


I am sure Lasersabe will publish all details soon on his website.


That is the old video and link.  See my post above for the new design.

TinselKoala

Quote from: lasersaber on May 01, 2014, 06:13:54 AM
Thanks for the kind words guys.  I was able to rebuild a transformer that works almost as well as the previous one.  Now I need to test and see if the copper foil is necessary, find the best winding ratios and do other tests.  But first I am going to take a break because I am completely frazzled.


New video here:
https://www.youtube.com/watch?v=8dq9NQhzdw0



New schematic, 3D .stl bobbin and parts links here: http://laserhacker.com/?p=401

You are doing great work, thanks for sharing and reporting. I'm going to build one too as soon as I get de-frazzled myself!

I am wondering if you have any kind of Faraday cage available. I made a serviceable one out of some heavy copper mesh and a big aluminum restaurant tray thing that effectively blocks my high-powered wireless power transmitters, and I have also seen people use metal garbage cans with tight lids. You can see where I am going with this I'm sure.


synchro1

Tinselkoala,

Quote,

I'm going to build one too as soon as I get de-frazzled myself

Time to crawl back into your coffin of Earth, huh!

TinselKoala

Quote from: synchro1 on May 01, 2014, 01:40:31 PM
Tinselkoala,

Quote,

I'm going to build one too as soon as I get de-frazzled myself

Time to crawl back into your coffin of Earth, huh!
Blood.... I need fresh bloooodddd.......
Velcome to my laboratory......
8)

hartiberlin

Very well done Lasersaber !

https://www.youtube.com/watch?v=8dq9NQhzdw0

You are just using a 10.000 uF cap charged up to 12 Volt.

Be sure to comapre the run times also without the scope, cause I had seen
in my old scope some charging up of capacitors with special circuits... but you said,
you tried it also in your car during driving to work...

Well would be very good, if you could make another video and show us the waveforms
on the different connection points of this circuit.

Also you could try, if substituting the copper foils with just a capacitor between the coils
will also do the same function, or is the copper foils have really a better effect....

I have redrawn your diagram to a normal circuit diagram and it is very unconventional...
You are using the bridge rectifier really in a strange way and how you  drive the basis with it...
Did you find it by pure chance or while doing an error ??

I will post this tommorow, cause I am tired right now..if nobody else has already done it..

Great unique design..
I wonder how good this can be scaled up to get a 6 Watts LED lamp lighting fully bright
with bigger ferrite transformers.

Regards, Stefan.
Stefan Hartmann, Moderator of the overunity.com forum