[pvusers] Inverter waveforms

[william stewart <v_stewart@earthlink.net>]

>Further to this, I wondered aloud in alt.energy.homepower recently if 
anyone knew of posted pix of Trace, Exceltech etc. waveforms. I've 
heard much of the variable-step Trace approach, but I've never seen 
either time-domain or frequency-domain outputs from the thing. A 
Hammond ain't no fridge, and especially with the electromagnetic 
pickups, I can see the possibility for fairly low levels of distortion, at the 
wrong frequencies, appearing in the output.

For Trace, check their Technotes section.  I found waveforms at http://www.traceengineering.com/technical/tech_notes/tn13.html (if you really want see the phase shift, click on figure 4).

With my Trace SW 4048, I haven't noticed any effect on RF components or CFL bulbs (or anything else for that matter). Of course, I'm grid-interactive with batteries, so that may be a consideration.

It does buzz when in sell mode, though I have it in a utility room in the basement, so noise is not an issue there.  I haven't taken any db readings.

Will Stewart



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