Hello, I scoped the 5V and it all looked just fine, I am using the same 12V Buck converter that I have used everywhere else - I will try adding caps next.
The 12V supply is capable of delivering much more than the required current and it is also driving a 6 digit B-7971 device at the same time I removed the HV enable/disable line - no difference. I will report back once I have added some capacitors. On Monday, 18 November 2019 12:00:16 UTC, Kevin A. wrote: > > Richard, > > The phenomena you describe seems to be quite interesting, and after > thinking though the possibilities I have several ideas for you to try: > > The 2 most likely scenarios I can come up with would be: > > - Switching noise entering from the enable pin to the microcontroller. Try > leaving the enable pin unconnected, and the power supply will stay on. If > you find that this alleviates the problem, you can use an optocoupler to > drive this pin and keep it galvanically isolated from your microcontroller. > > Or: > > - Noise or large voltage ripple present on the 5V rail. I'm not sure which > 12 volt power supply you are using to drive the whole system, but the > introduction of a large switching power supply could be taxing your 12 volt > source and/or introducing unexpected noise. If you have a scope, see if you > can probe the 12 volt line and the 5 volt line with the NCH device > installed, and then with the new power supply installed. If you see a lot > of noise or higher ripple with one versus the other, try to smooth things > out with some general purpose 220 or 470uF electrolytic caps placed close > to your circuits across power lines. > > I would also recommend using a linear regulator for powering logic such as > your micro and the smartsocket controllers. You can pre-regulate 12 volts > down to 8-6 volts, then use a high quality LDO (low dropout regulator) to > provide clean power to your logic circuits. Switching power supplies can be > very noisy and cause glitches just by output ripple present in normal > operation. > > My suspicion is that the larger switching currents of the big supply may > be inducing some noise on the low voltage side of your circuits, and seeing > as the 5 volts is running directly off of a switching supply this noise is > making it's way to the logic and causing glitches. You already tried moving > the power supply away from the smart sockets and observed the same > glitches, so I cannot imagine EMI/RFI emitted from the device itself is the > issue. > > Of course, let me know what your findings are. We will solve this! > > On Mon, Nov 18, 2019, 1:48 AM Richard Scales <ric...@scalesweb.co.uk > <javascript:>> wrote: > >> Just got to my desk after working away and have looked at the PSU's. >> >> First test - connect to 12V and set the output to 170V all good. >> >> My clock build has ten ZM1350 smart sockets - though only using six at >> the moment - it has been running reliably for 1 month or so using one of >> the NCH6100HV power supplies to generate the 170V. >> >> I removed the NCH device, mounted the new supply, connected GND and 12V >> on one side, then the 170V Output and the output control on the other side >> and fired the thing up - all looked good. >> >> I have now had it running for almost an hour now and I am seeing some odd >> behaviour on the smart sockets in as much as occasionally some characters >> are corrupted or the seconds misses a single change (ie, displays 1 then >> 3,4) other characters display garbage and some transition effects change. >> >> I have checked all voltages on the Smart Sockets and right now - the 5V >> is at 4.995V and the 170V is at 169.9V so I would expect that to be OK for >> the logic and the display. >> >> The display blanking (processor disabling of the 170V output) is working >> perfectly - I am just getting corruption. >> >> I have NOT connected GND on the output side as it appears to be the same >> connection as GND on the input side. >> >> I have a small BUCk converter generating the 5V for the logic and that >> line appears to be clean. >> >> I have mounted the new HV supply on one side of a perspex panel on 15mm >> standoffs, the smart sockets are on the other side of the panel with the >> same 15mm standoffs. >> >> Is there any risk that some form of RFI is causing the issue that I am >> seeing? >> >> I removed the PSU from its mount and moved it away from the smart sockets >> - around 20cm and the symptoms remained. >> >> If I put the NCH6100HV back in the circuit then order is restored. >> >> Could you suggest where I should be looking next? >> >> >> >> >> >> >> On Tuesday, 12 November 2019 19:16:05 UTC, Kevin A. wrote: >>> >>> Glad to hear it finally arrived! Looking forward to your feedback and >>> seeing it in action on the ZM1350 project. >>> >>> On Tue, Nov 12, 2019, 1:46 PM Richard Scales <ric...@scalesweb.co.uk> >>> wrote: >>> >>>> Hello! >>>> >>>> After nearly a month after ordering - I am informed that the eagle has >>>> landed! (I am informed by Parcelforce in the UK that it is a busy time of >>>> year!). I am working away all week but my wife sent me stage by stage >>>> pictures of the package being unwrapped! >>>> >>>> moved the I am back Monday and will get it in to play on my ZM1350 >> development setup - Thank you for all your help. I look forward to >> reporting on progress. >> >>> >>>> >>>> On Monday, 4 November 2019 15:42:35 UTC, Kevin A. wrote: >>>>> >>>>> So now the true reason for the delay reveals itself! Again, sorry for >>>>> that; a customs check just seems to be the luck of the draw. >>>>> >>>>> On Mon, Nov 4, 2019, 10:11 AM Richard Scales <ric...@scalesweb.co.uk> >>>>> wrote: >>>>> >>>>>> Hello, yes, I just got the same notifications and now Parcelforce in >>>>>> the UK seem to be accepting ownership! >>>>>> My friend in HK is very pleased with his and has been sending me >>>>>> pictures of it all afternoon which has been fairly depressing - until >>>>>> now! >>>>>> Lets see how long it takes Parcelforce to work out how much to fleece >>>>>> me for import charges! >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Monday, 4 November 2019 14:58:43 UTC, Kevin A. wrote: >>>>>>> >>>>>>> Richard, >>>>>>> >>>>>>> Good news, looks like there was a new scan today. Package should be >>>>>>> on it's way! >>>>>>> >>>>>>> On Fri, Nov 1, 2019, 10:25 AM Richard Scales <scal...@gmail.com> >>>>>>> wrote: >>>>>>> >>>>>>>> All understood, thank you for your help. >>>>>>>> >>>>>>>> Sent from my Huawei phone >>>>>>>> >>>>>>>> >>>>>>>> -------- Original Message -------- >>>>>>>> Subject: Re: [neonixie-l] Re: Homebrew high voltage nixie power >>>>>>>> supply >>>>>>>> From: "Kevin A." >>>>>>>> To: neonixie-l >>>>>>>> CC: >>>>>>>> >>>>>>>> Richard, >>>>>>>> >>>>>>>> Just letting you know that I also reached out to parcelforce in the >>>>>>>> UK and submitted an inquiry with them as well. If none of the requests >>>>>>>> I've >>>>>>>> submitted turns up a result in one week's time (by November 8th, >>>>>>>> 2019), >>>>>>>> I'll be sending you a new package via. DHL. >>>>>>>> >>>>>>>> Thank you for your patience, >>>>>>>> Kevin >>>>>>>> >>>>>>>> On Thu, Oct 31, 2019 at 4:07 PM Richard Scales < >>>>>>>> ric...@scalesweb.co.uk> wrote: >>>>>>>> >>>>>>>> I got my friend in Hongkong to place an order from the second batch >>>>>>>> and his have just arrived in HK, I suspect he might be seeing his >>>>>>>> before I >>>>>>>> see mine! >>>>>>>> >>>>>>>> >>>>>>>> On Thursday, 31 October 2019 00:36:44 UTC, Kevin A. wrote: >>>>>>>> >>>>>>>> After a lengthy phone conversation with USPS representatives, they >>>>>>>> submitted an internal request for an update on the package. Hopefully >>>>>>>> it is >>>>>>>> still in transit to you, and maybe forewent some local scans in the >>>>>>>> UK. I >>>>>>>> shipped another unit to Australia the same week and the tracking >>>>>>>> history >>>>>>>> looks similarly sparse, with the package arriving just today. >>>>>>>> >>>>>>>> Of course, I'll keep you posted. Thanks. >>>>>>>> >>>>>>>> On Wed, Oct 30, 2019, 7:32 PM Kevin A. < >>>>>>>> ka...@scarletmail.rutgers.edu> wrote: >>>>>>>> >>>>>>>> I see that on my end as well. I do not send packages to the UK >>>>>>>> often, so I can't comment on whether this is normal or not. I did just >>>>>>>> submit a formal search request for this package through the USPS >>>>>>>> website >>>>>>>> and I'm calling USPS now. As it is after business hours, if I cannot >>>>>>>> reach >>>>>>>> anyone tonight I'll place another call tomorrow early in the day. >>>>>>>> >>>>>>>> I'll keep you posted with any updates. Worst case, if it is >>>>>>>> determined to be completely lost I can recover the insured value and >>>>>>>> send >>>>>>>> you another package (with a different carrier). >>>>>>>> >>>>>>>> Thanks, >>>>>>>> Kevin >>>>>>>> >>>>>>>> On Wed, Oct 30, 2019, 7:13 PM Richard Scales < >>>>>>>> ric...@scalesweb.co.uk> wrote: >>>>>>>> >>>>>>>> Thank you. Oddly USPS has it as having left London Heathrow on the >>>>>>>> 24th, no updates since. The UK handler Parcel force confirmed that it >>>>>>>> has >>>>>>>> not been scanned into their network ☹️ >>>>>>>> >>>>>>>> -- >>>>>>>> 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. >>>>>>>> To view this discussion on the web, visit >>>>>>>> https://groups.google.com/d/msgid/neonixie-l/17eda207-03b3-4ad0-b178-d187660e2b27%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 neoni...@googlegroups.com. >>>>>>>> To view this discussion on the web, visit >>>>>>>> https://groups.google.com/d/msgid/neonixie-l/87edb651-2e62-4207-821b-a1baebd4fe4e%40googlegroups.com >>>>>>>> >>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/87edb651-2e62-4207-821b-a1baebd4fe4e%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>> . >>>>>>>> >>>>>>>> -- >>>>>>>> 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/uqpK9r37Frw/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/CALcVLK%2BTLtwzkvnSPkxqkLM031eHwwz2NTT_25LQAeLsKVjsGg%40mail.gmail.com >>>>>>>> >>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/CALcVLK%2BTLtwzkvnSPkxqkLM031eHwwz2NTT_25LQAeLsKVjsGg%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 neoni...@googlegroups.com. >>>>>>>> To view this discussion on the web, visit >>>>>>>> https://groups.google.com/d/msgid/neonixie-l/4oohsg7ppnixpuhf0j-vsdyg8i3p6fxk0xqp8-tpjmwp-wss8p8-unlirc-1y5lreromxghnc76urc021mc-pm54gm-gmsnk4t6sxs8igo5r6v3c820-u2bx4p-gwnhro-yutxdv-uk4onqhfnsqs-doak3i.1572618301317%40email.android.com >>>>>>>> >>>>>>>> <https://groups.google.com/d/msgid/neonixie-l/4oohsg7ppnixpuhf0j-vsdyg8i3p6fxk0xqp8-tpjmwp-wss8p8-unlirc-1y5lreromxghnc76urc021mc-pm54gm-gmsnk4t6sxs8igo5r6v3c820-u2bx4p-gwnhro-yutxdv-uk4onqhfnsqs-doak3i.1572618301317%40email.android.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. >>>>>> To view this discussion on the web, visit >>>>>> https://groups.google.com/d/msgid/neonixie-l/506e82e7-46e5-4d98-8cbd-4007ebed530c%40googlegroups.com >>>>>> >>>>>> <https://groups.google.com/d/msgid/neonixie-l/506e82e7-46e5-4d98-8cbd-4007ebed530c%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. >>>> To view this discussion on the web, visit >>>> https://groups.google.com/d/msgid/neonixie-l/b137f92c-b07b-43f8-b6e8-26015b93a47f%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/neonixie-l/b137f92c-b07b-43f8-b6e8-26015b93a47f%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/7e12999d-ff30-4100-8526-8504ad6ac453%40googlegroups.com >> >> <https://groups.google.com/d/msgid/neonixie-l/7e12999d-ff30-4100-8526-8504ad6ac453%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. 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