I’m saying that I think just plain full wave rectified will do, but you might need to add some smoothing to bring the average voltage up. If you want to design a power supply, I suggest you download psud2 from here http://www.duncanamps.com/psud2/
> On Oct 16, 2020, at 12:28 AM, Richard Scales <[email protected]> wrote: > > > OK, I think I'm getting there - I now understand that in the UK, mains > voltage is 230V RMS - I had assumed that the quoted value of 230V was a peak > value - shame on me (brain is not what it was 40 years ago when I learnt all > that stuff). > > Given that UK mains is around that value - are we saying that full wave > rectifying that and smoothing it is pretty much all we need? > > ... and if so, a suitable isolation transformer should be employed for > safety/sanity. > > ... and a suitably sized electrolytic for smoothing. > > - Richard > > > >> On Thursday, 15 October 2020 21:30:15 UTC+1, Paul Andrews wrote: >> You don’t need DC to drive these things. Full wave rectified will do. Also, >> you want the average rectified value to be 240V. Rectifying 170V RMS won’t >> give you that. Smoothing it will get you closer. So I think you should just >> use 240V RMS full wave rectified. >> >>>> On Oct 15, 2020, at 11:42 AM, gregebert <[email protected]> wrote: >>>> >>> You could use a voltage-doubler. That will solve the voltage problem but >>> it will double the current. Is the VA rating of the transformer sufficient >>> for your project ? >>> >>> >>>> On Thursday, October 15, 2020 at 7:50:22 AM UTC-7 Richard Scales wrote: >>>> On the whole isolation transformer thing - I've been trying to find >>>> something with 170V secondary with enough VA (for 6 displays) and have >>>> failed thus far. >>>> >>>> An alternative approach might be to take off the shelf toroidal >>>> transformers - like mains to 35V then 45 V to mains - two transformers >>>> back to back. Standard parts, lower cost, plenty VA. >>>> >>>> - Richard >>>> >>>> >>>>> On Sunday, 2 August 2020 01:47:39 UTC+1, celzey11 wrote: >>>>> https://www.ebay.com/itm/PCB-with-23-pieces-IN-28-nixie-tubes-slightly-used-working/114333271792?_trkparms=aid%3D1110002%26algo%3DSPLICE.SOI%26ao%3D1%26asc%3D20190711095549%26meid%3D77ba7a42f3f24b709ebe632fb079b086%26pid%3D100047%26rk%3D5%26rkt%3D12%26sd%3D112419561527%26itm%3D114333271792%26pmt%3D1%26noa%3D1%26pg%3D2047675%26algv%3DSellersOtherItemsV2&_trksid=p2047675.c100047.m2108&autorefresh=true >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "neonixie-l" group. >>> To unsubscribe from this topic, visit >>> https://groups.google.com/d/topic/neonixie-l/bVoCKhPv7Dg/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/77e9c049-01d9-4386-b736-3dd337823550n%40googlegroups.com. > > -- > You received this message because you are subscribed to a topic in the Google > Groups "neonixie-l" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/neonixie-l/bVoCKhPv7Dg/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/2af17b15-73a1-49a0-b178-b6318e8abd75o%40googlegroups.com. -- 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/BD384B17-D06D-404F-A005-40CE622802DE%40gmail.com.
