CATHODE RAY TUBE AGEING AND TESTING (i) - INTRODUCTION

Well, it's been a long journey, having inserted the electron gun, withdrawn the air from the bulb and sealed it off, the only remaining thing to do is to perform that final process of "ageing" and a Mullard Cathode Ray Tube was available for sale.   More deatil on this final process in my next blog entry but for now, I just wanted to share with you this evocative photo of tubes being aged - don't they look cute in their Moygashel linen bags.   As we all know, linen from Maigh gCaisil (the place where the stone fort is)  is much prized for it's softness and hard wearing characteristics and was just the thing for 1950s Mullard  CRT manufacture for whilst the valve assembly girls wore nylon, the CRTs wore only linen sourced from Ireland: -