On Monday, 11 August 2014 22:26:30 UTC+1, gregebert wrote: > > I had a brain-meltdown and didn't realize you were making a > battery-operated device. > > The wristwatch I'm working on right now has a DC-DC converter (flyback > converter) that boosts 3.7V to about 180V to ionize my display, and then > throttle-back to around 140 to 160V to save some battery energy. The watch > is controlled by a small FPGA, so I use a voltage-divider for the FPGA to > monitor the anode supply and regulate it. I'm just about ready to send the > board out for fab, so it's going to be a few weeks before I have this > debugged. Although I've simulated it extensively in SPICE and Verilog, I > dont have a good way to simulate the entire closed-loop system so do expect > some surprises. > > So, the short answer is yes, you want to modulate your high-voltage supply > to save battery energy, but you will still need to burn some extra energy > via dropping resistors, or in my case, NPN-constant-current-driver, just > because the neon tubes have nonlinear & varying behavior. >
Thanks gregebert! :) Just read a post you made on the IN-1 :/ I have them already along with the IN-9 and my IV-18, those are my only tubes. Once I've built my first project properly, I'll go for other tubes if they don't last long. Good thing I have 6 of them and need only 4 in my design. Thanks for the explanation on the design too. :) -- 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/764fdf43-8124-4469-a562-d9a14640a496%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
