How to build a GIGANTIC Joule theif for 288 V DC electric car?

[saintsnick]

Copied my own text from a diferent thread... What your talking about has been done and is proven. Look up Bob Boyce. He used a programable mosfet module running on a 12v battery, programed to get high frequency narrow 12v pulses of curent through the module FET's to a hand wound LARGE torroid ferrite transformer. The narrow switched pulses flow through the primay winding, magnetizing the whole torroid. When the pulse switches off, the magnetism collapses, inducing a HV spike (back EMF), which he rectifies with diodes and  sends right back into the batttery. The cycle repeates.  A volt meter shows the large batery voltage rising as you watch the video. The battery powered a small toy electric jeep which his daughter was photographed driving around. Interestingly, the programable FET module is probably not needed.  Joule ringer primary... ie... 2n2955 self oscillating with the JR primary is probably all you need to do the exact same thing, without a module, nor any programing. I believe it might work because JT self oscillation is fairly fast, and fast = narow. Seems to me, the bigger the ferrite core, the bigger the output. Dont be confused by Bob. Bob Boyce used 3 parallel paths of current. Joule ringer only has one path, but works the same way. Then again, more parallel paths, more output? What ever works best, you would probably need one Joule Ringer for each Battery in the electric car. But they're cheap enough to build. 

-Saintsnick