Re: [neonixie-l] IN-13 Lifespan

2017-01-31 Thread Joe Croft
I am surprised they lasted so long! -joe On Jan 30, 2017 12:20 PM, "TheJBW" wrote: Joe, I actually discovered exactly this late last night. Hadn't gotten around to replying yet. Turns out that the simple footprint got flipped at some point. I didn't think that the tubes

Re: [neonixie-l] IN-13 Lifespan

2017-01-30 Thread Joe Croft
When I had a tube that took 15ma to drive it, I discoved that I had the two 'anodes' wired backwards. The tube had a short life, in the order of weeks running full time. -joe On Jan 23, 2017 1:41 PM, "TheJBW" wrote: > About 1.5years ago, I built this really nice stereo

Re: [neonixie-l] IN-13 Lifespan

2017-01-23 Thread JohnK
the common useage developed.] John Kaesehagen Australia - Original Message - From: Instrument Resources of America To: neonixie-l@googlegroups.com Sent: Tuesday, January 24, 2017 6:52 AM Subject: Re: [neonixie-l] IN-13 Lifespan As far as I know, one can NOT build a bar-graph

Re: [neonixie-l] IN-13 Lifespan

2017-01-23 Thread Instrument Resources of America
As far as I know, one can NOT build a bar-graph, or neon lamp style, LED, or any other indicator type, of VU meter. (Perhaps you built a 'level indicator' of sorts.) The very definition of a VU meter (at least the professional type) involves the mechanical ballistic damping, and mechanical

[neonixie-l] IN-13 Lifespan

2017-01-23 Thread TheJBW
About 1.5years ago, I built this really nice stereo vu-meter using IN-13 bargraph tubes. About two weeks ago, one of the tubes made a "tink" sound and the current control went away -- the tube stayed ignited, but the "bar" was stuck at the bottom. I noticed that the spacer at the far end of the