THE GREAT MULLARD MAGIC BLOG — mullard

May 1854 brought a useful accessory addition to the Mullard High Speed Valve Tester (MHSVT).  Developed in conjunction with Messrs. Spear Engineering of Warlingham the range comprised of eight adaptors to facilitate the testing of valves for which no existing valve base was provided on the instrument. These were precision items, with the bodies of the adaptors being trned from duralumin - usually reserved for aircraft bodies - and just look at the adaptor below for testing the EY51 boost diode - impressive huh? The adaptors were engraved 1-8 with the figures clearly identifying each adaptor body and were priced...

Today's photograph from the annals and archives of Mullard is a press photogaph from early 1954 where Mullard representatives chatted animatedly with Mr A J Walker Hon. Secretary of the Association of Public Address Engineers at the Mullard Stand during the APAE exhibition.  It was recorded that Mr Walker was very excited by the possibilities that the EL84 presented to the world of PA: -

Well, I have broken off my series of Mullard historical blog posts to answer a query I have received from a customer about the so called Mullard Mustard capacitors.   These capacitors, introduced to the radio market in 1958 have a polyester dielectric which exhibits very low dielectric loss, high insulation resistance coupled with good temperature and moisture resistance.   In all these parameters they far exceed the efficiency of paper dielectric capacitors and impart a very similar audio signature I am told. Throughout the 1960’s Mullard Mitcham conducted a whole raft of accelerated storage and use testing and found these are...

Well, the early to mid 1950s were an exciting time for Mullard – some would say, the ‘Golden Age’, 1950 dawned and Mullard was selling a nice range of TVs in the shape of MTS 521 & MTS 634 models to the hungry post war market as endorsed by Arthur Askey – a grateful public and Arthur said ‘ I thank you all!’ or was it ‘Where’s me washboard!’ Also in 1950 we first see the appearance of Sidney The Service Engineer whom you also see gracing the top of these pages – he was a jolly chap utilised in...

I say, we are now on the home straight here with the final episode in our tale of a globetrotting 1950s newspaper reporter's visit to Mullard Blackburn: -  In the Grid Department, the grid backbones were being fed through a machine from reels and the tungsten wire, fitted on to a spool was wound around these backbones.  The grids, up to now all bound together in one continuous strip, were later cut into single units and connections welded to them in readiness for assembly in the valve base.  The next part of the tour included the Glass Factory where I...