| Electronics > Projects, Designs, and Technical Stuff |
| The (long) story of the relay clock |
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| edavid:
--- Quote from: Spemo on July 27, 2019, 08:35:38 pm --- --- Quote from: edavid on July 27, 2019, 05:36:51 pm --- --- Quote from: Spemo on July 26, 2019, 07:27:31 pm ---As promised, here is the "Schematic" I use to build this monster - maybe one of you can find some use with this. --- End quote --- That is a "pictorial diagram" rather than a schematic. Is it possible to create a schematic? --- End quote --- something like this? (Attachment Link) --- End quote --- Yes, exactly, although it turned out to be only slightly more comprehensible than the pictorials :P Thanks... |
| Spemo:
--- Quote --- Yes, exactly, although it turned out to be only slightly more comprehensible than the pictorials :P Thanks... --- End quote --- Well here you go, I drew something up in tinyCad with the right values. I did this quickly, so this is only the 3 digit version with startup circuit. |
| edavid:
Thanks, much easier to understand! |
| maxwell3e10:
Now a really crazy idea would be to make a "digital" clock without any semiconductors. Use a mechanical pendulum for timing, relays for counting, and small incandescent lightbulbs. I wonder if such a thing was ever made during the early electric era. I find it curious that most popular wrist watches use the opposite approach now, a quartz oscillator but mechanical hands. They have never appealed to me. |
| texaspyro:
--- Quote from: maxwell3e10 on July 28, 2019, 12:51:25 am ---Now a really crazy idea would be to make a "digital" clock without any semiconductors. --- End quote --- I've seen a digital clock where all the counting, display, etc was done with neon lamps. |
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