Stepwise time display of digital timing relay - has preselected step which is fraction of required time reached after number of steps

摘要

The time is set by preselector e.g. a decade switch. The time does not correspond to the required time interval, but corresponds to The total set time interval is reached only after several times running through the step set by the preselector but the time displayed on the preselector corresponds to the whole time interval. The counter stage has one or more decade counters, and is connected to an n+ stage display device with a n LEDs. It is connected to an output stage.