On Tuesday, May 8, 2012 5:20:59 AM UTC-7, Dekatron42 wrote: > > I recently aquired a few Western Electric 6167 dekatrons. I have not > been able to find a schematic drawing >
Here's a video of one working with my kit: http://www.dailymotion.com/video/xqpnm0_western-electric-we6167-in-spinner-kit_tech The few I still have a picky little bastards. They don't want to spin unless the anode current is at least 1mA. Also, if they do stall in one spot for too long, that spot gets "sticky". To un-stick it, I had to up the current over 2mA, and run that way for a few minutes, then it work again at 1mA. My kit makes about 450V. The anode resistor used was 150K. The tube connects as follows: Pins 1,2,3,7,8,9,10,12, & 13 tie to a 'K' connection, which is +60V on my kit. Pin 4 (K10) ties to the NDX, which goes thru an LED, but it can also tie to 'K'. Pins 11 (B6-B10) & pin 14 (B1-B5) to to guide G1, The anode is pin 19, which gets tied to +450V thru that 150K resistor. Note, the drop across the tube (anode to cathode) is only 110V. This means the anode sits at ~170V, once its on. The voltage drop across the anode resistor will be 450V-170V = 280V. Most 1/4W resistors are rated for only 250V. For long term assurance, I'd split the anode resistor into two series resistors. 150K could be 75K+75K, 68K+82K, or 100K+47K. Kit schematic: http://threeneurons.files.wordpress.com/2011/12/sp393_sch.gif -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/Mv6UCkoCD9oJ. 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.
