THE GREAT MULLARD MAGIC BLOG — televisor

Today, we are going to talk about photocells  and in particular 'gas amplification,' an interesting phenomenon shown by gas filled photocells and  I was reminded of a hilarious occurrence when a vintage radio 'expert/forum gobs__t' proudly visited proclaiming that he had just 'stolen' a Baird Televisor lamp and on proudly producing it with a smug flourish, I was able to deflate his arch sense of triumph by regrettably informing him that in actuality he had 'stolen' a Mullard 56CG photocell. With photocells, although the manufacturing methodology is the same as for a standard thermionic valve,  a precise aliquot of a noble (inert) gas...