Seconds tacho generator to drive alternating impulse seconds slave clocks from normal 1 minute master clock system.
60 impulses are "generated" in 58.6 seconds. The mechanism stops and awaits to be released by the next one minute impulse from the master clock.
Built from old Landis&Gyr time switch geartrains and synchronous motor and some electronic opto heads ex- kWh meters and a few driver transisitors.
It gives the same visual effect as the European railway station clocks. with the waiting of the second hand in the 12 position.
