This optical tachometer with LASCR was found in a 1965 General Electric documentation. The diode at the input is an unusual type today.
ON Semiconductor AMIS−3910XGEVB Evaluation Board demonstrates the features and capabilities of the...
This circuit was obtained in a Popular Electronics of the 90s. It against a kitchen hood based on...
The original version of this circuit was found in an old English publication that comes to...