We found this circuit in a 1997 documentation. It is possible to automatically reverse the direction of rotation of a three-phase motor. The circuit uses WEG timers and contactors.
This circuit uses an optocoupler with a phototriac or optotriac to drive an external triac. The...
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
This mixer configuration from a 1967 publication can be adapted to work with modern transistors. The...