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] <javascript:>> > 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] <javascript:>. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/77e9c049-01d9-4386-b736-3dd337823550n%40googlegroups.com > > <https://groups.google.com/d/msgid/neonixie-l/77e9c049-01d9-4386-b736-3dd337823550n%40googlegroups.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 on the web, visit https://groups.google.com/d/msgid/neonixie-l/2af17b15-73a1-49a0-b178-b6318e8abd75o%40googlegroups.com.
