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https://www.decware.com/cgi-bin/yabb22/YaBB.pl Audio Forums >> Frequently Asked Questions >> OC2 and other VR tubes - lifespan? https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1450116158 Message started by Steve Deckert on 12/14/15 at 18:02:38 |
Title: OC2 and other VR tubes - lifespan? Post by Steve Deckert on 12/14/15 at 18:02:38 Quote:
The difference in brightness between OC2 tubes is determined by how high or low the internal elements are set against the mica plates on the top and bottom. Since that part of assembly is done by hand, it is common to have OC2, or and VR tube for that matter, look completely different with respect to how they glow. This does not effect operation. As far as isotopes, actually I think it's Ni63 in VR tubes and Kr85 in neons. Either way, they are there to help the VR tube start in pitch black conditions, so if they became sluggish on start up just turn the lights on. So far all the VR tubes that we use have no history of failure. Since they are no longer made, we carry an inventory of new old stock to keep our customers in supply. Also if you only need a few, you can always find them on ebay. Steve |
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