<Of course small transformers such as in some wall warts would be a pain! <-Dave Well I've done far smaller. Like those .5"x.4" miniature audio cores. those are a pain as you have to find the smallest guage that will give the ampere/turns and core flux plus fit! Very much on topic item! Sent off EMAIL to IMSAI.NET... As most know I've been looking for a manual for my IMP-48 8048 board. Got a really nice response. Seems they didn't sell many, like maybe some 300 of them and that is why they are so scarce(as are the Docs). Oh and I'm not selling it, send gold bullion directly too... ;) Allison