This circuit uses an unusual PLL, the 4046 CMOS. We found it in the October 1994 issue of Electronics Now. The circuit also uses a 4093 gate as a trigger.
This circuit for the induction motor was found in Motorola's Circuit Applications for the Triac of...
This circuit for an optical audio link using LED or LASER was found in a 90s QST magazine. The circuit...
Found in an EDN this 80's circuit allows a microcontroller to be used to regulate a battery. The...