This sewing machine motor control was found in the December 1997 Electronics Now magazine. The half-wave circuit uses a 106-type SCR.
The circuit that gave rise to this configuration is from 1978. In the original publication are...
We found this circuit in Popular Electronics from 1992. Time is given by C1. The circuit provides an...
This circuit was obtained in a 1980 publication but can still be assembled today with the 106...