Kapanadze Cousin - DALLY FREE ENERGY

[itsu]

Sounds good Nick!


All,

question about the DC2DC converter (24V to 130V) as in the red box, see below.

I have found a suitable transformer (SPI 804-2007-35), i think, and hooked it up, but the output voltage was way to high (600V pp).
Measuring the input from the both IRF540 MOSFET drains (see yellow / blue lines in the diagram), shows
a square wave signal, but at about 74V!!, see screenshot.

Input into the circuit is 24V from 2 batteries in series.


Why do i have 74V square wave signal on the drains?  How to get it back to the required 24V? 


Thanks,  regards Itsu

[NickZ]

  Itsu: You said,
  "Why do i have 74V square wave signal on the drains?  How to get it back to the required 24V?"

   How about placing a pot on your 24v input, or on the gate to see if it will trim down the voltage?

  That DC to DC step up circuit can be made using a second Mazilli circuit, 24v input to it also, (as in my case), and then adjust to the needed output by using another yoke core, wound up for the right output voltage?  Or not?  I still have my 12v yoke still wound up around.  Just a matter of adding a few more turns to the secondary to bring it to 130v output,
 
   Are there not no commercially made DC to DC step up boards that will work? Or that can be made to work as needed.
   

[itsu]

Hi Nick,

yes, that 24V can be made in severall ways, but i just wonder why following that diagram i have 74V (well thats including ringing, so really about 50V) on the drains when i input only 24V dc.

I expected to see a square wave signal of about 24V (with some ringing) to input into my transformer.

Regards Itsu

[NickZ]

  There are several commercially made circuits that can be adapted by winding some more turns onto their output coil, to provide for the 130v output. Such as something like this?  Might be overkill, but there are some very cheap units that can be adapted, as well.   I always look for the easy approach, although it doesn't always work...
  http://www.ebay.com/itm/600W-DC-DC-Step-Up-10-60V-to-12-80V-Converter-Boost-Charger-Module-/301753530586?hash=item4641e978da
 
 

[Hoppy]

Why do i have 74V square wave signal on the drains?  How to get it back to the required 24V? 


Thanks,  regards Itsu

Something to do with R27 maybe? Try disconnecting it.

Regards
Hoppy