I would be interested to know how that worked out. I would not have considered to try to use an analogue control of the grid, rather I would have gone down the PWM path. I do this in a couple of clocks of mine, and it works nicely. I have it set up to do linear dimming according to the ambient light level by varying the duty cycle.
On Thursday, 27 December 2018 16:17:11 UTC+1, Thomas Kummer wrote: > > Here is an improved version of the schematic. > > [image: image1.jpeg] > Sent from my iPhone > > On Dec 27, 2018, at 09:09, Mark Moulding <[email protected] <javascript:>> > wrote: > > It looks to me that this should work. The filament resistors calculate > out correctly, both for current and cathode bias voltage, and it's > certainly a simple enough circuit. > > I've played around a bit with the DM-160s, both as indicators and as > actual amplification elements. As displays, thy're not very bright - > certainly their state would be easily visible in an indicator panel (their > original application), but like the first generation LEDs, they don't > actually emit much light. I don't think they'd be a very effective > nightlight... (They didn't make very good amplifiers either.) > > For a nightlight application, I think I'd consider one of the many > available VFD displays. They're equally easy to drive (a bit easier, > actually - the drive voltage is often quite a bit lower at 24 volts or so). > and they're available in all kinds of shapes and sizes. > ~~ > Mark Moulding > > On Thursday, December 27, 2018 at 5:23:50 AM UTC-8, Thomas Kummer wrote: >> >> On Thursday, December 27, 2018 at 1:04:44 AM UTC-6, Thomas Kummer wrote: >> This is the schematic I’ve come up with thus far. Would it work? >> >> -- > 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] <javascript:>. > To post to this group, send email to [email protected] > <javascript:>. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/10666cc8-2f95-47c0-9948-aad6b73ccb72%40googlegroups.com > > <https://groups.google.com/d/msgid/neonixie-l/10666cc8-2f95-47c0-9948-aad6b73ccb72%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8fdad1d5-8973-4f0e-8138-7f7aa9ba33af%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
