Hi all, Looking at open source power supply designs.
The one below has been kindly made open source. https://vfdclock.jimdo.com/2015/07/18/openhardware-10w-mc34063-based-high-voltage-power-supply-module-high-efficiency-small-size/ I like because it already has the eagle files, so I am guessing that the layout is (maybe) ok. Even then I am not sure what is going on with this circuit. Pin 3 (timing capacitor) is connected to a diode and a transistor, so am a bit confused about whether this is even a real working supply. <https://lh3.googleusercontent.com/-2U3EmG0JqJ8/WlhvmiXEK1I/AAAAAAAAFvk/y2l_WkEquf8_NwS0wKeWPUEFbj1V7ozhACLcBGAs/s1600/1111.PNG> The power supply is the biggest headache for me (to get small and neat anyway). I figure that if I use that one in my devices (with a tripler circuit for the dekatrons) I am not going to be stepping on anyone's toes should I decide to sell a few. The inductor is marked as 100uH but none of the other critical components have values. Even then I would just have to have a stab at the amp rating of the choke. I am know that the switching diodes and transistors are similar in criticality as all these sorts of circuits re: speed etc. Although I have no idea what speed that thing is running at. Would I be right in thinking that a good fast enhanced mosfet such as a IRFU220 as in threeneuron's HVPS would be acceptable ? >From the jimdo.com site I found some other useful information regarding a power supply he sells as a kit. It's all through hole stuff. The trouble is he uses stuff that is not readily available from mouser Australia. For instance the fast diodes he uses (HER105/SF-16/SF-18) are from taiwan and are "non stocked" from mouser, so I am figuring that the BAV21's that threeneuron's uses would be an acceptable substitute. To a point, a fast diode is a fast diode (amps aside) more or less, right ? All I am trying to do is drive a bunch of my new favorite toys/addiction (Dekatrons) and a few nixies in a bit of an art project. I have seen others .... but Jimdo seems to have nailed the size. https://jan.rychter.com/high-voltage-power-supply-for-nixie-tube-projects Any guidance would be much appreciated. Cheers, Phill -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/55086aa9-27f7-4785-bacd-651e3ce0a521%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
