This circuit was found in an old Popular Electronics. The integrated circuit is equivalent to a double 741. The source does not have to be symmetrical.
This circuit we have a practical idea to improve the performance of voltage regulators. The idea...
The BFO or Beat Frequency Oscillator is used to receive telegraphic signals or even modulated in...
Found in a1968’s Burr Brown documentation, this shield uses an integrated circuit from that time,...