I finally got around to building my spinner tonight. What a fun little kit! I have four OG-4's that arrived from the Land of the Bear a couple weeks ago. All spin nicely. Thanks for a great project. I'm considering the idea of using this circuit as a power supply for a nixie clock and use the Dekatron as a pendulum of sorts. I like the simple power supply using an LM393 rather than a finicky chip designed for switchmode use.
I have one issue with one of the OG-4 tubes in that it is very loose in its base. What type of cement or glue do you guys recommend to fix it in place? I have read in the past that super glue shouldn't be used to repair tubes since it allows for no expansion, therefore risking cracking the glass. Joe, N6DGY On Jan 7, 8:54 am, threeneurons <threeneur...@yahoo.com> wrote: > On Jan 7, 2:23 am, "Tidak Ada" <offl...@zeelandnet.nl> wrote: > > > Thanks Mike, > > > That's verry usefull info. Now waiting untill your stuff arrives here... > > > May be I will buy suitable capacitors and diodes for the higer voltage. > > Any hints for the diodes?? > > > eric > > For actually changing the supply to 500V, the components used, need to > be rated over 250V. The supply 1st makes 250V, then enters a doubler, > to get 500V. Q1 needs to be a 300V, or 400V FET. An IRFD320, rated at > 400V, is provided, so no need to change this one. C2 thru C4, are 1uf, > 250V, which should be swapped for 350V rated caps. D1 thru D3 provided > are BAV21s which have 250V ratings. Change these to the MUR140, which > is rated for 400V. UF4007 will work, too. Make sure its a UF4007, not > a 1N4007. Two entirely different parts. Eric, I know, you know the > difference, but someone else reading this may not. If R8 is made a > 6.8K (instead of the 7.5K provided), the output should be around 500V. > With R8 kept at 7.5K, but R7 raised to 820K, the output will be > ~550V. > > Buy your parts at reputable dealers. Its already been shown, that some > eBay sellers, just restamp their diodes with whatever part number is > in demand. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
