If it was pulsed-DC, then it probably was simple multiplexing. I have thought about doing it with AC, which makes the driver more complex, but it will make the bulbs last longer since both electrodes will be illuminated (alternately, of course). Not sinusoidal AC, but square-waves. If you do the math, a typical neon bulb is "on" for about 2/3 of an AC cycle (on at 90V, off at 60V) so that would be my starting point for multiplexing. I was thinking a 7 x 9 matrix, using 2:1 multiplexing. It's more driving circuitry but it might be possible with an HV-series device that can drive high and low.
On Wednesday, May 5, 2021 at 5:46:13 AM UTC-7 celephicus wrote: > Can someone please help me out, I remember an article from some scanned > book from the 60s where a set of neon lamps were connected in a matrix with > clever biasing and pulses on the row & column could toggle an individual > lamp. I thought it was the GE glow lamp manual but it seems not. > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3fbf8723-0461-443e-8b97-e4c97e1417can%40googlegroups.com.
