I know you like analog technology much, but if you would change your analog sin/cos filters to digital LPF filters, you can then not only change the corner frequency very easily but you can most likely also remove the shaping pots and amplitude pots because the output voltages will be perfectly consistent. You don't need to create your 90 degrees phase shift by means of filtering, you can do that with a couple of diodes from the S0-S6 lines and another S/R flipflop so that you have 1 square wave 4.5kHz and another square wave with 90 degrees phase shift. Very easy, and no need to fine tune resistors and capacitors to get the perfect corner frequency.
Michel On Sep 8, 6:38 pm, Michel <[email protected]> wrote: > Hi Aaron, > > > Surprisingly, in 2 years and several clocks nothing has failed and there > > seem to be no odd symptoms. > > It's probably not all that critical then, but you may come around > another batch of MAX509's that fail after 2 months of use and then > you're going to wonder "hummm why is that?" > > > Your other ideas regarding the controller > > are really invaluable, I only hope to spare time to try some of them > > soon! > > No problem, if you can make it work with the 60 or 120 segments > (whatever is feasible) you can then use the circles to make magic eyes > to indicate GPS signal strength, number of satellites etc etc. It > would be more flexible than just 8 segments. > > Michel -- 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 https://groups.google.com/groups/opt_out.
