> 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.
