Sorry for the late posting on this -- just caught up on my reading. On the question of whether an inverter should be pure sine wave, I did have two mobile phone chargers fried by my old inverter. I thought to start with I just had a duff charger, but then the same thing happened to another one so I don't think it was coincidence.
I suspect that the cheaper square wave or modified sine wave models have harmonics which can somehow upset the electronics of the chargers, but I now use a pure sine wave inverter (from Maplins) for my laptop and so far haven't had any problems. Robin Scagell Galaxy Picture Library =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
