On Wednesday, April 6, 2016 at 11:20:31 AM UTC+2, Eddy wrote: > > Looking at different websites, translated IN-18 datasheets, I get more and > more confused what the correct direct drive cathode current is. > Here at tube-tester: http://www.tube-tester.com/sites/nixie/data/in18.htm the > nominal current is stated 6mA. > On the same site a translated datasheet > http://www.tube-tester.com/sites/nixie/dat_arch/IN-18_03.pdf here we see > 'Basic electrical parameters', Bad translation of 'Nominal'?. In this table > the 'no more than' (=max?) 4mA. The next table 'Maximum operating > parameters' is confusing. Anode current at rectified voltage: Is this 50Hz > rectified or smoothed DC? And how can a absolute max rating table have 2 > values (min 4 and max 8) without any other parameter? And a absolute > minimum 4mA?? Minimum drive current = 4mA? > A not translated datasheet : > http://www.tubeclockdb.com/nixie-tubes/5-in-18-18.html here I see 4-7mA > and 2-4 (50Hz/DC, nominal, absolute max ???) My Russian is non existing.. > But if I look at most schematics they use a 10K anode resistor, that's > about 2mA. > Some on the web are stating to keep the current as low as possible, others > warn about excessive cathode poisoning with low currents, and recommending > 6mA.. > Can anyone shed some 'light' on this? > Thanks!! > > >
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