This physical line servo control uses components that are not currently common. The circuit is from an 80's documentation and is powered by a voltage according to the servo.
This 1992 circuit uses an integrated circuit not common today. The Sanyo integrated circuit must...
This switch can only be triggered when the mains voltage goes through zero and can operate as a...
This circuit combines a low-offset and a high-speed operational amplifier. The circuit was found in...