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December 7, 2009
about 5 years ago
If your inverter behaves wildly because your there is no load, or if your loads are unbalanced (ie. you are switching between 6" of EL wire and 60' of EL wire) I found you can balance the loads using a capacitor in place of EL wire.
Capacitance of EL wire is about 1nF per foot, so if your inverter is rated for a minimum 20' and you are only driving a couple of inches of EL wire, you can put a 20nF cap across the inverter output to calm down the inverter. I believe it is behaving like a LC oscillator, and needs to be tuned to have a certain natural frequency.
Similarly in the case above, you can put a ~60nF cap across the 6" section of wire.
It would be great if you used a TRIAC with zero crossing detection. That way you could dim the wire by chopping the AC.
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