Wow, slow down chaps, must be a highly talented thing all this having a dig. All Michel said (in response to a comment "For future reference, the TI SN75468 has seven MPSA42s in it") was "They are not exactly the same, standard MPSA42s are 300V while as the SN75468 is only 100V." (which is true) then all hell breaks loose, lighten up guys, can't we discuss variables etc?
@Michel..interesting links you gave, had not seen the first 2 before. @Frank "It is not very common that nixies are powered with _more_ than 180V" Not common but still done which is point in question not how many times it has been done. @Nick. From how read it Michel has no 'beef' but is just discussing possible concerns and provides links to where those concerns may arise (after it being stated it does not happen!). "then frankly you deserve all you get" Really? Surely that sort of attitude is not becoming someone with the amount of intelligence such as yourself? "Just so you know for the future, Geert is the son of the sites author " What so we must not mention his name? "I suggest before wandering down these sorts of routes you take the time to look through the archive" Have you ever TRIED searching through the archives for information? (I have, not easy at all) besides does he (Michel) need to to discuss a point or two? "Many of the long-term members here are professional electrical or electronic engineers and designers" And some of us not and actually LEARN something by reading these posts! (and hopefully, like myself, have a "high self-preservation factor" All I would say guys is..Lighten up a bit, relax, discuss our hobby without the snide remarks or chest beating, allow someone to have a different opinion, point out errors in thinking because you/we want to help each other, you know all the normal stuff that we do after graduating sandpit lol. (Mountains and Molehills comes to mind) Either way I thank you all for sharing your knowledge and learn a little bit every time. Regards, Dave. On 27 Feb, 11:48, Nick <[email protected]> wrote: > On Feb 27, 11:21 am, Cobra007 <[email protected]> wrote: > > > In short, > > > Take a look at Geert's clock here:http://www.dos4ever.com/geert/geert.html > > > Now, I do not know Geert but it seems to me he knows quite well what > > he is doing. Check the HV power supply he uses for his clock and > > estimate what the DC voltage will be. > > ...and he explicitly uses 400V cathode drivers (BF487), states the > safety issue and isolates the clock in a suitable box. > Just so you know for the future, Geert is the son of the sites author > (Ronald Dekker), who works for Philips as is extremely well known > here. > > > Or else, how about this > > one?http://www.geocities.ws/podernixie/nixie/index-en.html > > Simply a dangerous design. Should never be built. > > > Or, jee (although through a transformer), another > > one:http://www.ledsales.com.au/kits/in14_clock_instructions.pdf > > ...who uses 300V cathode drivers (MPSA42). > > I'm not sure what your beef is here - as has been stated by others, > generally nixies are driven by about 180-200VDC. All you've uncovered > in your examples are two good designs which use drivers with suitable > Vceo, and one dangerous design which has no isolation and overdrives > the cathode switches. > > Look, If you want to drive your nixies from 500V, then use suitable > drivers. If, like probably 95% of the population you use about > 180-200V to drive them, then 100V Vceo is fine. If you use 100V Vceo > drivers and 300V on the anodes, then frankly you deserve all you get - > this is the danger of the Internet... -- 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.
