Original poster: "Alexander Rice by way of Terry Fritz <twftesla-at-qwest-dot-net>" <alex-at-rices.myip-dot-org> Hi all It just occured to me that because all the gaps can 'see' the other gaps then the UV from the first one would cause all gaps to break down meaning a faster switch on = greater dI/dT as opposed to inline gaps where no gap can see the next gap. Alex