first, i wanted to use the smart-socket approach. But that's so much soldering by hand - so i made these SMD drivers boards. For a price ~ 2US-$ for one full SMT-assembled driver-PCB with all parts on it, it was a no-brainer.
Richard Scales schrieb am Samstag, 1. Mai 2021 um 06:00:40 UTC+2: > This is an ingenious approach - I like it. I'm just embarking on a similar > journey myself though I'm taking the Smart-Socket approach as I have some > experience in using them on B-7971 and ZM1350 etc. > Great work. > - RIchard > On Friday, 30 April 2021 at 13:10:19 UTC+1 Roman H. wrote: > >> here are some pictures of the PCBs and schematics! I've made a driver-pcb >> for each tube - and two versions: for the IN23 and the B5971 ! So i can mix >> IN-23 and B5971 tubes ;-D >> Each segment gets the current, that i have found in the datasheet for the >> minimum segment current value minus 10-15 % - for a long lifetime! >> The tubes are not multiplexed! I'm using shift register 74HC595 and the >> SMD variant of the MPSA42. It's all driven by WEMOS D1 Mini (ESP8266). I'm >> using the NCH6300HV power supply. >> >> Display with IN-23 tubes and B5971 in action: >> https://youtu.be/k0mYuI8FqP0 >> >> John Snow schrieb am Freitag, 30. April 2021 um 02:28:40 UTC+2: >> >>> Is there that much of a range in brightness of the tubes, or is that a >>> camera artifact of multiplexing the power? >>> >>> Nice to see something I wouldn't be able to find enough tubes or money >>> to make in action! >>> >>> On Friday, 30 April 2021 at 00:59:44 UTC+1 Terry Bowman wrote: >>> >>>> >>>> On Wed, Apr 28, 2021, 5:21 PM Roman H. <[email protected]> wrote: >>>> >>>>> https://youtu.be/ZfoV3-rsbNQ >>>> >>>> >>>> O_O >>>> >>>> >>>> On Apr 28, 2021, at 6:46 PM, tntmod54321 <[email protected]> wrote: >>>> >>>> That looks amazing, how much did that cost you? >>>> >>>> >>>> $_$ >>>> >>>> >>>> Terry Bowman, KA4HJH >>>> "The Mac Doctor" >>>> >>>> https://www.astarcloseup.com/ >>>> >>>> “...the book said something astonishing, a very big thought. The stars, >>>> it said, were suns but very far away. The Sun was a star but close >>>> up.”—Carl Sagan, "The Backbone Of Night", *Cosmos*, 1980 >>>> >>>> >>>> -- 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/c8c67970-5554-411c-b050-29d30e24393cn%40googlegroups.com.
