Well, I can answer my last question on my own, didn't think correctly there - of course you don't short these resistors as that would result in 2.5V across the heaters.
The reason I asked was because I thought you perhaps had two sets of series resistors, one left in the circuit at all times and one that was shorted after some time. /Martin On Tuesday, 30 June 2020 23:25:32 UTC+2, Dekatron42 wrote: > > So you are using something like a 6.8 Ohm series resistor on each side of > the heater to get these figures? > > If you use a series resistor on each side, what effect does that result in > on the DC-bias, none or something that you have to adjust for? > > Do you short these resistors after some time so they are not affecting the > circuit, or do you leave them in there? > > /Martin > > On Tuesday, 30 June 2020 21:03:50 UTC+2, gregebert wrote: >> >> Be careful about the inrush current when energizing the filaments; the >> cold resistance is around 2.8 ohms, whereas hot is around 7 ohms. So, with >> a 1.1V supply, your surge-current will be about 400mA unless you use >> circuit tricks to lower it. >> >> I use a series resistor + fuse and drive from a 2.5V transformer; my peak >> current is around 250mA, and 180mA operating. >> > -- 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/b04c36e1-fab0-408c-bb77-c71eb5039ba9o%40googlegroups.com.
