I apologize for the title of this post. I changed the body without updating the subject. I don't see a way to edit it.
On Thursday, May 5, 2022 at 10:41:23 AM UTC-4 Don Moore wrote: > Hi - new to this group. Brand new to nixies, and I have introductory > experience with Panaplex displays. I have a direct drive design that uses > current sinks in each cathode connection. > > It appears that with the nixie, the anode resistor supplies the current > limiting function. I am using Neonixie's 6-digit clock chip and design > from 2006, linked to in a recent post here, that drives 74141s to drive the > tubes using direct drive. I believe the chip uses PWM to drive the tubes, > but I don't know what the duty cycle or frequency is. I am curious about > determining the anode resistor value. > > My tubes are Z5660M, which have a minimum recommended power supply of > 170V. Let's assume 180V. The sustaining voltage is 140V. The datasheet > lists Imin = 3 ma, Imax =6 ma and Ipulse = 20ma. Would a baseline to > determine the anode resistor be to assume something in the middle like 4.5 > ma, which would be about 8.9k at a 40V drop? It seems like tweaking may be > needed, and to simulate the actual PWM signal to see what intensity > results, and see if the value needs to be increased or decreased. Am I on > the right track? Thank you in advance. > > Don > -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d0bf1c09-22f1-4b85-a1f2-6c2e3b282b20n%40googlegroups.com.
