On Jun 18, 2008, at 8:23 PM, Harold Hallikainen wrote:

> What range of frequencies are you running the EL lamp at? Would it be
> possible to just run that frequency through the magnetics?

Probably something like 60-3000Hz.  I don't believe that it's  
possible to have a compact transformer that covers that frequency  
range; the LC oscillator/transformer combos that make up the  
"standard" 2KHz inverter tend to be pretty big, and they WHINE.  Part  
of the idea is to get the inductor frequency up above the hearing  
range so you can't hear the windings humming.

BillW

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