Unfortuniately as you already said before, uniselectors are difficult do get nowdays. In a lesser way that also applies to bistable realays. An other way, surrely in case you don't mind your 'antique' clock is equiped with a quartz clockwork, you can build your nixie clock with a microprocessor and a single (bistable) relay for the tick-tack, but why souldn't you use a loudspeaker and a 1 sec pulse instead? Ok, it is my mainspring to use as much as possible old technology in my development of a meter clock with 'steam time' moving coil meters as the read out. And if you then plan to build 64 or 128 bit D/A converters with relay's for each meter, you can make yourself an image of the curent drain. It will be much more as some of the electron tube based clocks that are published on the web.... eric _____
From: [email protected] [mailto:[email protected]] On Behalf Of Dekatron42 Sent: zaterdag 24 augustus 2013 15:27 To: [email protected] Subject: Re: [neonixie-l] Re: Relay-controlled Nixie Clock 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 <[email protected] <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: [email protected] <javascript:> [mailto:neoni...@ <javascript:> googlegroups.com] On Behalf Of Mats Engstrom Sent: zaterdag 24 augustus 2013 12:11 To: [email protected] <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 <[email protected] <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- <http://www.goldmine-elec-products.com/prodinfo.asp?number=G18683> 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+...@ <javascript:> googlegroups.com. To post to this group, send an email to [email protected] <javascript:> . 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