300 volts is easily done with a transformer type setup that already accommodates 200. If the main switching mosfet can handle higher back emf, the primary to secondary isolation of the transformer is rated for >300, and the output capacitors can handle >300, then the feedback resistor network can be changed to increase the regulated high voltage output.
If you need 300 volts for the gr10g, just run a higher value anode resistor for the in18s at 300 volts and it should be fine. On Mon, Nov 2, 2020, 1:48 PM Dekatron42 <[email protected]> wrote: > Ah, yes it is. > > The Tayloredge is a "Flyback Boost Converter" according to the datasheet > and I know that there is an extra add-on that you can use to get higher > voltages (it has been discussed here on the forum) - so it might be > possible to add it to these designs too. > > /Martin > > > On Monday, 2 November 2020 18:19:21 UTC+1, Paul Andrews wrote: >> >> Michael Moorees design is a boost converter, and I have successfully >> added a voltage multiplier to those. However I have not successfully added >> a voltage multiplier to the raw output of the secondary of a fly back >> converter. >> >> Sent from my iPad >> >> On Nov 2, 2020, at 9:23 AM, Dekatron42 <[email protected]> wrote: >> >> >> I've tried a lot of stuff/solutions but so far I haven't found a single >> power supply, that is sold, that produces these voltages directly, all need >> an external voltage doubler/tripler. With the kit from Michael Moorrees you >> can add a doubler/tripler very easy, look a bit further down on his webpage >> here: >> https://threeneurons.wordpress.com/nixie-power-supply/hv-supply-kit/ (an >> external solution, he also has a larger voltage multipler for use with for >> instance the IEE NIMOs) or with the Tayloredge PSUs you can do something >> similar but there is no pin available so you'll have to solder a wire to >> get to the pulse output: >> https://www.shop-tes.com/1554-hvps-horizontal-smt-high-voltage-low-noise/ >> . >> >> I could make a new PCB and add all components on it (even thought about >> making a cut-out that would fit for the original PSUs from Moorrees or >> Tayloredge and just add the other parts) but I'd really prefer a PSU that >> had it all on the same PCB. >> >> I have understood that it is a real challenge to make a PSU with these >> voltages unless they use a doubler/tripler design, but I still hope that >> someone is up to that challenge. There is a linear voltage regulator here: >> https://www.bartola.co.uk/valves/2012/10/20/600v-feedback-regulator-finished/ >> that I haven't had time to build and test yet, but it looks very good and >> you can follow the design on the blog. >> >> /Martin >> >> On Monday, 2 November 2020 13:45:55 UTC+1, Paul Andrews wrote: >>> >>> >>> Hi Martin. Have you tried a voltage multiplier with the raw output of >>> the secondary on a fly back converter? My experience has been that you >>> don’t get what you expect. I.e. if your smoothed DC output is 150V and you >>> add a voltage doubler to the raw output from the secondary, you will not >>> get a smoothed 300V DC. Someone on here explained why a while ago. Greg >>> maybe? >>> >>> I’m seriously interested to know what other people’s experience of this >>> is. >>> On Sunday, November 1, 2020 at 8:48:48 AM UTC-5 Dekatron42 wrote: >>> >>>> Yes, 300V is for the old GR10G to light up properly, they work better >>>> at 250V and above. >>>> >>>> Adding an external voltage doubler/tripler is a nice option to drive >>>> these GR10G and possibly also dekatrons. >>>> >>>> /Martin >>>> >>> -- >> 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/yPdx7qLjIx8/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/b75817bd-a91c-4b6e-ad72-57596d377401o%40googlegroups.com >> <https://groups.google.com/d/msgid/neonixie-l/b75817bd-a91c-4b6e-ad72-57596d377401o%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/70487327-4217-44f1-9f15-2b810061a59eo%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/70487327-4217-44f1-9f15-2b810061a59eo%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/CALcVLKLhubX%2Bv2GqryZUgqg9ku9HNCPGjbtpoZcuvP61j9YFBQ%40mail.gmail.com.
