- I'm not so sure about that. The electrons are only being - pulled by a few dozen volts, so they're basically drifting - along. You might get ghosting if you try to multiplex VFDs - too fast with insufficient blanking periods. Certainly, - they don't respond as fast as LEDs. - - John KG4L
You, know that brings up a nice experiment to try. Have two displays, of like technology, say 2 7-seg LEDs, 2 VFD digits, and two nixies. Rig 1x2 multiplexed drivers for them, specific to each type. Pump a unique numeral to each display, and run up the scan frequency as high as you can, until the display starts to misbehave. Note the top scan frequency of each. You may have to play with the drive circuitry, to make sure its not the drive circuitry, that's hitting the limit. Also the logic, may have to be discrete logic, or PLDs, since a uC, might be too slow, if it starts getting in the MHz range. As for blanking intervals. Its always a good idea. I use them with LEDs. There its be the drive circuitry, not LEDs themselves, that peter out early. -- 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.
