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Old 2nd Dec 2019, 2:47 pm   #4
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 2,900
Default Re: Driving a piece of electroluminescent tape in lieu of a magic eye

I think Philips tied their EL scale plates directly to the hv winding of the transformer, though I seem to remember that a somewhat higher frequency is better. They didn't live too long anyway, but modern technology is probably better. You could tie a modern EL material to the 120V winding through a resistor. Most important is a symmetrical wave form.
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