Thanks Guys, I agree it's a good idea to incorporate sockets for at least 2 types of HV power supply modules, so I am thinking of using the 1363 for one of these sockets and a simple (555 based) for the second socket. The 555 based HVPS is then discrete, easy to repair. Not sure about audible noise though. The clock will be direct drive, so that is one problem solved but the HVPS is another story. If the switching frequency is above 20kHz, you wouldn't really hear the effects of a ripple current through a ceramic capacitor, right?
Michel On Apr 2, 10:31 am, AlexTsekenis <alextseke...@gmail.com> wrote: > Hi Michel, > > Using a drop-in module is not a bad idea. The advantage is that it saves > you time to focus on what would make your kit stand out - most likely not > the power supply. > The disadvantages are that it might cost you a few extra cents in volume > and it might go out of stock for an unknown period of time. > > You can alleviate the supply security issue by designing-in a second or > third footprint so you can accommodate multiple standard modules. > > Not sure if I agree with you Martin on ease of repair. Chances are, once > soldered on the board and put in the enclosure you will forget about it. > If it develops a fault and it is the power supply, you could kindly ask for > one from Michel who will have a pile purchased at low cost. IMO that would > be excellent customer support Michel. Maybe what you meant Martin is * > satisfaction* from repair using components laying around? > > You are making a good point on noise. If I had such a module I would fully > characterise the ripple current through the ceramic output capacitor, but > it certainly will contain harmonics within the audible range. Ceramic > capacitors are piezoelectric, so they will vibrate much like a piezo > speaker. > > Another member of the forum had noise issues and we tried dipping the > module in varnish. Slight difference, still noisy. Covering it with > silicone took away most of the noise, if I remember correctly. These > operations will require your time if you are making many kits...better to > find modules that are, let's say, plug & play. > > Regards, > Alex > > > > > > > > On Monday, April 1, 2013 11:26:03 PM UTC+1, Michel wrote: > > > I am a sort of working on a nixie clock kit and am wondering what kit > > builders would prefer for the HVPS circuit. I am thinking of using a > > standard 1363 module as it is cheap, easy to install and saves me > > designing time. Would most kit builders appreciate this or would they > > prefer to build the HVPS circuit from discrete parts? > > > Michel -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
