THE GREAT MULLARD MAGIC BLOG — r type valve
VALVE TYPES & MANUFACTURING TECHNIQUES (i)
Posted by STEVE M on
Back in the dim & distant past, in a land far away, shrounded in the mists of time there was a valve................... and what a valve, not like the ones we have today, oh no, it was very different indeed. At the time, it was very similar to all its contemporaries - not that there were so many - and like them, it was a general purpose triode having a four volt pure tungsten filament which operated at a temperature similar to that of an incandescent light bulb. The electrode cage was mounted an an inverted pedestal sealed...
- Tags: bright emitter valve, r type valve