Alarm release circuit for quartz timepiece - uses 24 hour, hour and minute contacts controlling respective flip=flop stages

摘要

The alarm circuit employs a 24 hour contract actuated via the timepiece mechanism and an hour contact similarly actuated by the latter for a given duration in each full hour. A flip-flop stage is dependent on the state of the 24 hour and hour contacts and its output is connected via a coupling logic to a second flip-flop stage connected via a further coupling logic to the alarm source. The hour contact is pref. coupled to a minute contact set to a given point within a 60 minute cycle, this minute contact controlling a third flip-flop stage. The output of the latter is connected via a coupling stage to the first input of the second flip-flop stage.