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15:44
YouTube
Spemo builds and repairs
Relay clock - first project
Follow me on Patreon: https://www.patreon.com/spemobuildsandrepairs In this Video you will see the build of a relay clock. The time counting is done by relays and transistors to to delay turn on time to another relay. All it uses is a 1Hz signal with a short high time (my guess is 15-25% high, 85-75% low). The only IC Chips are a 555 to reset ...
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Jan 4, 2019
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