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 is from an Electronics World of 1968. The transistors are of the time and the power...
This circuit can be used in the car to convert the 12 V from the battery in 6 or 9 V up to 2 A....
This circuit, from the ON Semiconductor Thyristor Manual, controls both the speed and direction of...