Well it seems I have an out-gassed tube. Have everything there and fired it up and nothing. :(
On Oct 11, 6:09 pm, threeneurons <[email protected]> wrote: > > I was measuring from the ground off the fuse to the anode pin with no > > tube connected. I did try the tube and I had nothing going on with the > > tube. Thinking it was DOA. Not sure thought I may have done something > > incorrect. I measured with the 180K resistor and a 270K resistor. > > With no tube, you have no load, other than the impedance of your > meter. Hence, you 'll be measuring the maximum possible voltage. > > Dekatrons, like all other gas filled tubes act sorta like zener > diodes. They have a voltage that they're happy at, called the > maintaining voltage. But, unlike a zener, they have a higher, 'strike' > voltage, that you 1st have to overcome. I'm not too familiar with the > EZ10 (A nor B) specs. Common neon dekatrons, like a 6802, have a > 'maintaining voltage' of ~190V, and a 'strike voltage' of ~380V. So > you'll need a supply voltage of at least 380V. Once it strikes, it > will try to pull the supply down to 190V. If you have no anode > resistor, you just bought yourself a new tube (die baby die). With a > 180K resistor, even if there's a dead short to ground, the current > won't go over 3mA (assuming 600V supply). Any dekatron should be able > to handle that, for a few minutes, without worry of damage. Of course, > the sustain voltage will be something higher. Probably around 200V. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
