Joule Thief

[electricme]

@Resonanceman

Hi Gary and All

Thanks Jim

Have you  done this already ?

The   microwave that I am thinking of taking apart is  much  bigger than the one I got the MOT from ........  do you  have any idea  how  size affects  this  circuit ?

If the wires are the same on the other MOT  it looks to me like  a winding  can  be used for feedback
If so .......it  should  self charge . .......if a Jesus  charger is  used with it too .

I will start  taking the microwave  apart tomorrow .

gary
Q2 = if you feed the output into a bigger transformer, from a smaller transformer, you will not get a hi output, swap the transformers around then you will get more.
BUT, take the different size windings into consideration, if you push too much through smaller transformer windings, then it will get warm, just keep an eye on it.

Q3 = probably, you will have to check this out for your self.

Q1 = No, haven't had time to do this, only just read about it.

BUT, several years ago I took 2 identical transformers, a 240v light globe and a 12v 21watt car tail light globe and connected them as below.
It worked OK, The 12v Light bulb took away from the final output, but I made this setup to show a visitor how household power could be handled safely in the center of the circuit.
This circuit also shows how a Hi Volt can be reduced to a low volt, (increase in current) then transformed back to it's original supply, less the losses in the transformers, 12v bulb, wire etc.

But put a switch across the 12v bulb and you get a higher output from the 2nd transformer, but still not the same as was fed into the first transformer.

   

jim

Somehow I tangled up inside your post, sorry.

[electricme]

@All
Here is 3 jpgs of the last post showing the MOT transformer input and outputs

This MOT has a Primary (240v AC input)
It has a "control" monitoring flat coil, its the "thick" red insulated wire.
Then the HV output coil.


0985 = One side of the MOT showing the 3 coils.
           240v ac Primary is the bottom coil, Secondary is the TOP coil (HV) then there is a 3rd flat 
           coil just under the HV secondary.
0986 = HV output connection is seen in the middle on the top coil
0987 = Start of the HV secondary winding is seen secured to a "tag" on the iron lamentations, this 
          is  the wire you need to "lift" so the iron lamination's do not carry any voltage.

jim

[innovation_station]

yipppppeeeeee 


NOW WERE ROCKIN .....

IST!

[Thaelin]

   I cant stand back and see innocent people get hurt here.
I have to say something just to set my mind at ease.

       

   If you do the MOT style and especially the dual one, be very
careful of it. You can generate lethal voltages here easy. Only
one hit will do. A MOT in normal use delivers 4000v from the cap/
diode doubler. The step up ratio with two will be a lot.
   In my early days, I got hit with 35000 and I am damn lucky to
be alive now.

   At the voltages this will attain, the insulation on the wires may
not be enough to stop it. OK, back in my corner for now. Great
work tho. Much learned from this thread.

thay.

[gadgetmall]

   I cant stand back and see innocent people get hurt here.
I have to say something just to set my mind at ease.

       

   If you do the MOT style and especially the dual one, be very
careful of it. You can generate lethal voltages here easy. Only
one hit will do. A MOT in normal use delivers 4000v from the cap/
diode doubler. The step up ratio with two will be a lot.
   In my early days, I got hit with 35000 and I am damn lucky to
be alive now.

   At the voltages this will attain, the insulation on the wires may
not be enough to stop it. OK, back in my corner for now. Great
work tho. Much learned from this thread.

thay.

Very TRUE and you will find that they increase Current as well . i have did small test with the primary only and sparking increases the current . Is it Because the wire is so thick? Is there OU in COPPER MASS ? We will find out .

@electricme . You have an advantage as your stuff (MOT) are 220 ours in use are 110 . They still kick though . I finally have a package ready for you . Its a surprise . I got back pay and can afford shipping now 



Gadget 
Gadget