And one more: If the output diode can handle >300V. On Monday, November 2, 2020 at 3:32:01 PM UTC-5, Kevin A. wrote: > > 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 <martin....@gmail.com > <javascript:>> 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 <martin....@gmail.com> 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 >>> neoni...@googlegroups.com. >>> 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 neoni...@googlegroups.com <javascript:>. >> 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> >> . >> >
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