According to another manual (Vukolov) both have a life expectancy of 3,000 hours, there are small differences regarding filament voltages, but the most important one I see is that the grid and anode voltages are specified at 50V for the IV-4 and 25V for the IV-17.
Gaston On Nov 21, 5:51 am, fixitsan <chefin...@gmail.com> wrote: > > The 1000 hours lifetime is hopefully a misprint, there shouldn't be > > that much difference in the build to shorten it by 9000 hours and why > > continue to build a vastly inferior tube when you have a functionally > > identical and improved design available?. > > Tony. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
