Did you consider the power drain of such a clock? I was also looking to build a meter-clock with all flip-flops build with relays and also relay's for the D/A converters. the sum of the current was shocking You could consider to use SMD-relays, but even in that case the power drain is considerable! Even the neon and dekatron clocks by Sgitheach [ http://www.sgitheach.org.uk/index.html ] are only used for demonstration because of their power consumption! You could think about building only the minutes stage in relay logic or even the better only the first divider of that stage. that makes noise enough. Anyhow an interesting idea! eric _____
From: [email protected] [mailto:[email protected]] On Behalf Of ahochan Sent: woensdag 7 augustus 2013 11:50 To: [email protected] Subject: [neonixie-l] Relay-controlled Nixie Clock Hi, I'm thinking of creating a Nixie clock controlled by mechanical 5V relays. I won't do anything fancy, just static drive with the Nixie anode connected to 180VDC through a resistor and one relay for each cathode. The relay coils will be connected to uC pins via either individual transistors or perhaps a darlington array. Like so: 180V | R (anode resistor) | Nixie | ... | 1 relay for each cathode (connected to GND) Schematic here: https://www.dropbox.com/s/r67bnrz09b4xivv/relay-nixie-test-board.png I'll probably use IN-4 tubes, but that may change. I have two questions: * Does my schematic look sane? * Can anyone recommend a relay to use? I'm looking for a relay that can be switched from 5VDC. There are many available in small form factors, but most seem to be rated for 250VAC/30VDC or similar. (I guess a relay rated for a lower DC voltage might be ok too, since it will only pull 3-4mA) I want a mechanical relay... since the main point of this exercise is to get the clicking sound when the relays switch. Thanks in advance. -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/32a67b85-9496-4f62-84dc-c76bfff 0d83b%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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/!%26!AAAAAAAAAAAYAAAAAAAAAPDddShx705MuX20yCpp0vvCgAAAEAAAAKiwuUu1XDhNjr5/v9LImhkBAAAAAA%3D%3D%40zeelandnet.nl. For more options, visit https://groups.google.com/groups/opt_out.
