View Single Post
Old 24th Aug 2017, 10:27 pm   #1
Karen O
Rest in Peace
 
Join Date: Jul 2011
Location: Bridgnorth, Shropshire, UK.
Posts: 787
Default The wonders of slug tape

I recently rebuilt a CRT NBTV monitor into a more compact enclosure.

Everything went fine, except I now had patterning on the raster!

I knew straight away what the problem was: the field from the little LOPT. It was causing tiny deflections of the spot, especially at the side of the screen closest to the LOPT.

I knew from past experience that the patterning is nothing to do with the CRT voltages. It is a kind of velocity modulation as a result of the tiny deflections.

Anyway, the solution was a flux band around the LOPT and copper slug tape was just the job.

For the non horticultural, slug tape is adhesive copper tape that you stick around your pots to deter slugs (it apparently gives them an electrical tingle that they find objectionable).
Karen O is offline