THE GREAT MULLARD MAGIC BLOG

Just in case you thought Sebastian and his co-workers had to heft these long and wieldy tubes to remove the supernate, actually, no, they were placed on a rotating carrel that was tilted at such a rate as not to disturb the accreted phosophor film that sat on the inner face of the tube.  Here you see a laboratory coating system, however, the full size plant used a similar principle  - such fun!

Well, after a busy year, I have eventually got around to hanging up my Mullard neon sign.  This came from my friend Zhang who lives in Wuyishan in China way back in June 2018 - some 6 months ago. I really need my customers to purchase more radio collectibles so that I can afford to go visit Zhang where he has promised to treat me to the best Chinese cuisine available and a long hike in the Wuyi mountains.  For now,  I shall just sit and fondly think of him as I bask in the light from my sign and marvel...

Here we have a nice photograph taken at Mullards in 1952 of Sebastian Firkle who is laying the luminescent screen in a Mullard picture tube.  The screen phosphor was suspended in a liquid carrier and introduced into the envelope. After settling, the supernatant liquid was carefully decanted off leaving an even distribution of phosphor which was then dried under a gentle stream of cold air.

Here's to a happy 2019 which will be our 7th year of trying to help our lovely customers with their projects and parts needs!

Even though the National Grid came on stream in 1947, the public electricity supply in the UK was a real hotch - potch of AC/DC offered at differing voltages - indeed my own parents came cropper of this in their flat at Arnold Place, Whetley Hill,  Bradford as one plug was DC yet another AC resulting in a prized radio going BANG - what a mess!   Little wonder then that 20% of all radios fittted with Mullard valves in the early half of the 1950s were fitted with battery valves.   The Mullard battery valve series comprised of five types...