These tube current are maxima, aren't they ? So the PSU needs to provide the maximum power but average battery drain might be less than 50% of that. It's basically got to run party hours but could have a limiting strategy to average lower use.
Tool battery definitely not an option as I really want the battery to sit inside the helmet and be worn on the head :). But maybe 3 prismatic cells ? Belt-worn battery is an option but not really desirable. On Thu, Nov 21, 2024 at 2:53 PM Max Di Noi <[email protected]> wrote: > Adrian, shipped it this morning. > > You should be fine but you may want to calculate your power requirement. > > I haven't checked the datasheet but I believe IN-9 are 12mA each and IN-13 > 4.5mA each, so you need 33mA if you are using 2 tubes of each. At 140V, > that's 4.62 watts. > > The power supply is 85% to 95% efficient, assume 85%, so you need > 4.62/0.85 input power, that's 5.45 watts per hour. If it's a 12v battery, > you need 450mA per hour, if I'm not mistaken... 450mA x 12 hours, that's > 5.4A, assume that your battery is 80% efficient, you need 6.7A for 13 hours. > > Some of the Dewalt batteries can give you that, but also you don't want to > run a battery below 40%. > > The power supply should work on a lithium battery too. > > > -------- Original message -------- > From: Adrian Godwin <[email protected]> > Date: 21/11/2024 14:34 (GMT+00:00) > To: [email protected] > Subject: Re: [neonixie-l] IN-13 power supply > > Thanks, Max, that's pretty compact. > I haven't thought about battery yet, as I don't know how efficient the > converters are. I'm looking for max 12 hours runtime, might be able to get > away with less. > > On Wed, Nov 20, 2024 at 10:14 PM Max Di Noi <[email protected]> wrote: > >> Hi Adrian, >> >> What battery are you planning to use? Do you know battery voltage and >> power? So to check that inrush current is not too high for the battery, or >> it'll get damaged in time. I have done plenty of tests for my nixie watch >> and nixie clock power supply. >> >> I have this power supply which works extremely well and with a battery >> too. I use it to power 6x Dalibor tubes plus the two Dalibor colons nixies. >> Link below. >> >> You are welcome to return it if it doesn't work. It will work for your >> requirements. I'm in the UK. >> >> Check out High Voltage DC Power Supply Module Suit Nixie Tubes 3.7-15V >> Input 100-230V Out on eBay! >> >> https://www.ebay.co.uk/itm/276607450691?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=Tfi9UcJ0Sd2&sssrc=2051273&ssuid=Tfi9UcJ0Sd2&var=&widget_ver=artemis&media=EMAIL >> >> -------- Original message -------- >> From: Adrian Godwin <[email protected]> >> Date: 20/11/2024 21:57 (GMT+00:00) >> To: [email protected] >> Subject: Re: [neonixie-l] IN-13 power supply >> >> Thanks, that's useful data. I've seen the Russian datasheets but not >> really thought about them yet. >> I saw there were a bunch of options though those specs will narrow it >> down a bit. But there any that are known to be good (or bad) ? >> >> >> On Wed, Nov 20, 2024 at 7:13 PM Mac Doktor <[email protected]> >> wrote: >> >>> >>> On Nov 19, 2024, at 8:38 AM, [email protected] < >>> [email protected]> wrote: >>> >>> I'm looking for a compact, efficient, battery-powered supply for it. I >>> can see several possibles on ebay (it can be just the supply, doesn't need >>> to include modulator) but don't know how they compare. >>> >>> I'm assuming that the supplies made for el-wire are too low voltage and >>> possibly too low current, and I want a nixie supply at 140VDC or more. Is >>> that right ? >>> >>> >>> The rated voltage is 140V but I've seen higher. Have you seen this? >>> >>> >>> https://threeneurons.wordpress.com/nixie-power-supply/ >>> >>> >>> Note the current. The IN-13 can be driven with an MPSA42 but an IN-9 >>> will need something like an MJE340. >>> >>> As for the HV power supply, there are plenty on eBay but making it >>> battery operated may require an extra gadget. They're dime a dozen these >>> days. >>> >>> This is off the top of my head. My apologies if you've already gotten >>> this far. >>> >>> >>> Terry Bowman, KA4HJH >>> "The Mac Doctor" >>> >>> https://www.astarcloseup.com >>> >>> "Would you like to see the relevant data?"—343 Guilty Spark, *Halo 2* >>> >>> -- >>> 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, visit >>> https://groups.google.com/d/msgid/neonixie-l/BFE59275-9FA2-4D2F-AD89-AFEBD0D77547%40gmail.com >>> <https://groups.google.com/d/msgid/neonixie-l/BFE59275-9FA2-4D2F-AD89-AFEBD0D77547%40gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> 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, visit >> https://groups.google.com/d/msgid/neonixie-l/CALiMYrspGxBkp2PMc2tdXtHFCy%2B%2B-km0nq5hAV_9rMu9DbFECw%40mail.gmail.com >> <https://groups.google.com/d/msgid/neonixie-l/CALiMYrspGxBkp2PMc2tdXtHFCy%2B%2B-km0nq5hAV_9rMu9DbFECw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> >> -- >> 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, visit >> https://groups.google.com/d/msgid/neonixie-l/673e5f52.050a0220.200b74.beb3%40mx.google.com >> <https://groups.google.com/d/msgid/neonixie-l/673e5f52.050a0220.200b74.beb3%40mx.google.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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, visit > https://groups.google.com/d/msgid/neonixie-l/CALiMYrvzkAXvuLLpw799mkF1bMYjF08BScDUeOPR5isw00x0-A%40mail.gmail.com > <https://groups.google.com/d/msgid/neonixie-l/CALiMYrvzkAXvuLLpw799mkF1bMYjF08BScDUeOPR5isw00x0-A%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- > 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, visit > https://groups.google.com/d/msgid/neonixie-l/673f4958.5d0a0220.3d8582.ff3e%40mx.google.com > <https://groups.google.com/d/msgid/neonixie-l/673f4958.5d0a0220.3d8582.ff3e%40mx.google.com?utm_medium=email&utm_source=footer> > . > -- 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, visit https://groups.google.com/d/msgid/neonixie-l/CALiMYrv_Em7c5u_o8uhbTZgFtFh1GkksgZe8ftsDX5S5G2NaEg%40mail.gmail.com.
