Relation:
a+ (b x c) = a x (b + c)
a + b x c = (a +b) x (a + c)
120 degree lagged signals can be obtained with the simple configuration shown in the figure....
This circuit was obtained from a Popular Electronics of the 80's. It is set to a certain pulse...
In the figure we have an application of ON Semiconductor's own semiconductor manual from the 80's....