This detector with ultra-low deviation was found in an American documentation from the 90s. Operational amplifiers are from that time. The power supply must be symmetrical.
Found in documentation from the 1980s, this circuit makes use of discrete components of the time....
This circuit was found in an Elektor from the 90s. The circuit is critical, requiring a very...
This project makes use of a technology without many digital components and that can be easily...