James Salisbury wrote:
Slightly off topic;

I am looking for a supplier of good transient suppression equipment and a
overvoltage protection unit. My parents are living out in a rural part of
spain and are having problems with the mains killing electronic equipment.
Yes I do know of Farnell, but I was wondering if there was anywhere
cheaper?


Thanks



I can think of two technologies that actually work. One is a UPS with
batteries where the mains charges the batteries and the batteries power
an invertor.

The other is a CVT - constant voltage transformer.

surge arrestors can only cope with short duration spikes - and most
electronic equipment with SMPS can cope with those anyway.