With uniselectors and bistable relays, none have to be energized except when switching! ;) /Martin
On Saturday, 24 August 2013 12:34:21 UTC+2, Mats.Engstrom wrote: > @eric: Sure, but that is not the issue here. The OP clearly stated the > desire to build it with a MC - and then only 6 relays need to be energized > at a time. > > > On Sat, Aug 24, 2013 at 6:19 PM, Tidak Ada <off...@zeelandnet.nl<javascript:> > > wrote: > >> ** >> It's just the challenge to do everything with relay's, including the >> dividers. No MC nonsense ! >> People seems to have been forgotten that dividers and clocks where build >> out of flip-flops, discrete or with logic IC's... >> >> eric >> >> ------------------------------ >> *From:* neoni...@googlegroups.com <javascript:> [mailto: >> neoni...@googlegroups.com <javascript:>] *On Behalf Of *Mats Engstrom >> *Sent:* zaterdag 24 augustus 2013 12:11 >> *To:* neoni...@googlegroups.com <javascript:> >> *Subject:* Re: [neonixie-l] Re: Relay-controlled Nixie Clock >> >> Why is the power drain such a huge issue in the thread? The OP doesn't >> plan to do anything fancy like having a huge chain of relays to decode bcd, >> just simply driving them from a microcontroller straight up. >> >> A six-digit nixie clock would only have 6 relays on at the same time, and >> a normal small 5 volt relay consumes about 150mW. That's just 0.9 W in >> total - hardly anything to be concerned about especially since the nixie >> digits draw 400 mW each! >> >> >> On Fri, Aug 9, 2013 at 12:51 AM, Mark Moulding <urro...@att.net<javascript:> >> > wrote: >> >>> >>> >>> The clicky sound won't be very loud, but still audible if you use reed >>> relays, and many of these have the added advantage of being low current >>> enough to drive directly off the output pin of a microcontroller (25 mils, >>> or even less). It's a little difficult to find ones rated for 250 or 300 >>> volts; most have contacts rated for 100 volts, but I suspect that they >>> would still work fine in this application. >>> >>> Here's one that only draws 10 mA, and has the suppression diode built >>> in: http://www.goldmine-elec-products.com/prodinfo.asp?number=G18683 >>> Since you'd only have one relay per digit energized at any time, the total >>> current drain for the relays would be 60 mA, or 300 mW. Too much for a >>> wristwatch, but completely reasonable for any plugged in device. I bet the >>> nixie DC-DC converter will draw more. >>> >>> If a bit of noise doesn't bother you, and you *do* have a beefy power >>> supply, you could make one using the digit wheels from a pinball machine. >>> These are mounted on large rotary stepper switches, which draw *amps* while >>> switching, but only for 50 mSec or so. They're pretty loud, though, and if >>> you use these, you might as well just leave the number wheel mounted and >>> have a pinball machine clock - maybe with a nixie remote repeater display... >>> ~~ >>> Mark Moulding >>> >>> >>> -- >>> 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+...@googlegroups.com <javascript:>. >>> To post to this group, send an email to >>> neoni...@googlegroups.com<javascript:> >>> . >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/neonixie-l/ae919114-fa05-4efa-81a9-6d66453bbaf5%40googlegroups.com. >>> >>> >>> >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >>> >>> >> >> -- >> 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+...@googlegroups.com <javascript:>. >> To post to this group, send an email to >> neoni...@googlegroups.com<javascript:> >> . >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/CAEN9bvCU9%3DkiJo9%2Brd-m_Wa%2B4Ce6KY4PzK6NhBDHUhwPm2D19g%40mail.gmail.com >> . >> >> For more options, visit https://groups.google.com/groups/opt_out. >> >> -- >> 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+...@googlegroups.com <javascript:>. >> To post to this group, send an email to >> neoni...@googlegroups.com<javascript:> >> . >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAADO26KtPpVxHtuO2mmJrR04BAAAAAA%3D%3D%40zeelandnet.nl >> . >> >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. 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