> > But the powersupply, which is the simplest part of Mike's circuit, would > need a complete overhaul. TTL parts need a solid +5vdc and won't work > with Mike's unisolated zener shunt logic supply. Also, as you say, the > 74142 won't work at the 250vdc provided by the unisolated DC doubler > circuit. Probably I'd do the AC wall-wart, 7805 (or bucking switcher) & > boost switching supply... That right there takes away a lot of the > simplicity that the 74142's add to the circuit..
One can always use the back-to-back transformer trick. 220V:6V -> 9V:220V will give about 180VAC 220V:6V -> 12V:220V will give about 110 VAC Simplicity itself, and if one adds a nice tube shunt regulator, 2x0B2 in series, it has a +10 in coolness :) Gastón -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
