> Everyone likes flashing light technology. Now your revealing the dirty little secret of this forum. We're all just a bunch of overgrown children fascinated with blinky lights ! Anything that sounds like solid technical discourse, is all incidental.
On that note, that 4.7 ohm resistor that kept dying, failed in an abnormal mode. Normally, a resistor bites it when its dissipating too much power. It discolors. The resistance shifts (up or down, depending on type), and it finally opens up. Often with a little smoke and that familiar smell. In this case, the failure was abrupt. The circuit flashed a few times, then a "snap" noise, and a little flash emanated from the offending resistor. The resistor was now open, and a little hole appeared on the side of its body. Quite a cool failure mode to witness. Oh, there goes that not-so-inner-child popping out again. I may try this circuit again (modified) with a 0A4 trigger. That tube is physically larger. It has an octal base, and ST style glass envelope. Unlike the 0A5, it operates in the "glow" range of gas discharge, while the 0A5 uses the "arc" mode. Should work though. I can use a plate voltage as high as 225V, and when ON, the plate drops to 80V. That's a 145V difference. More than enough to step a dekatron. Also the 0A4 glows a pretty blue ... blinky lights ! -- 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.
