This circuit was found in a1980s Motorola documentation. The integrated circuit is from that time. The frequency depends on the crystal.
This circuit uses amplifiers from the 60's American company Microlin. The circuit can be designed...
This power control from Motorola's 1971 SCR Power Control Fudamentals can control full wave loads...
Despite being from a 1969 publication, the transistors used have current equivalents such as BC548 and...