On Feb 14, 6:48 pm, radioal <[email protected]> wrote: > Hi- > > I was a member of the old Yahoo group and just recently rejoined the > Google group, so I may be reinventing the wheel here, but I want to > share the details of my latest Numitron design. Most of the Numitron > clocks that I have seen on-line are based on the MM5314 which is a > neat chip for this purpose, but it comes with a few drawbacks, the > main ones of which for me are price and availability. The others are > the lack of an easy battery backup and the large number of diodes > needed to prevent ghosting when used with Numitrons.
Appreciate that you probably want to go the dedicated chip route, but in case anyone's interested, I've had good success using the Allegro chips A6279 et al to drive numitrons under microcontroller instruction. Multiplex and direct drive work fine (my clock uses either, depending on how much input power you'd like it to consume). Of course, because it's a really nice and useful chip, Allegro are now discontinuing it (sigh). Jon. -- 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.
