Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational amplifiers. The circuit can be implemented with any modern equivalent operational.
Found in a 1968 Mullard manual, this circuit measures temperature by infrared radiation. The...
The purpose of this circuit is to detect the movement of a person by the changes in light that...
We found this circuit in a Popular Electronics of the 90s. The circuit can be easily mounted...