Re: Building my own equilizer

[ScuderiaEV@aol.com]

I looked at putting Powercheqs on my Scirocco, but decided they were too 
expensive for a product that wasn't supported in the UK. I talked to Lee 
about a modification to a Rudman Reg (of which I had my own version) to make 
it non disipative. I spent a couple or three lunch hours breadboarding 
circuits and winding RM10 cores, got some reasonable results, ordered parts, 
and etched a set of 16 PCBs.

What I've done is build a flyback psu. They operate like a Mk1 RReg, turning 
on at a preset threshold, but instead of connecting a load to the battery 
they activate a fixed duty cycle pwm flyback psu and transfer the excess 
energy to another battery. They're connected in a loop in an interleaved 
manner, so the isolation never has to be more than 24 nominal. For example 
battery 1-2,2-4,4-6,6-5,5-3,3-1.

They were designed and build in a hurry and have a number of faults, except 
for the most important aspect, they work very well. 


Paul Compton
www.sciroccoev.co.uk