No doubt these 555 power supplies can work, but the efficiency can be poor, and there is no current overload protection. If you can live with the extra wasted power (means a heat sink, for your numbers) and can trust yourself never to short the power supply out, then these circuits will deliver. But you will never beat a custom SMPS IC with a generic 30 year old one IMHO.
On Nov 21, 5:50 pm, "chuck richards" <chuc...@all2easy.net> wrote: > All of the recent discussion about the little boost converter > HV supply is getting me interested in trying the idea. > > I looked around on the web and came across a few schematics > for it. It uses a 555 timer ic as the controller, and I > see that various frequencies are used. Looks like > rounding up the FET, the diode, and the inductor would > be no big deal. > > But, are these things really any good? Will one of them > hold decent regulation when running (6) nixies? > > My estimated total current at 170 volts DC would > be about 2.2 mA per tube. That would be about 13.2 mA > total. Is it worth experimenting with? > > I ask, because it seems quite tough to beat John Taylor's > model 1363 and 1364 power supplies. I have one of his 1364 > supplies here, and it's really slick! > > Thanks. Chuck Richards > > $4.95/mo. National Dialup, Anti-Spam, Anti-Virus, 5mb personal web space. 5x > faster dialup for only $9.95/mo. No contracts, No fees, No Kidding! > Seehttp://www.All2Easy.netfor more details! -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
