This filter for the 300 Hz to 3 kHz range was found in an American documentation from the 90's. The operational amplifier is a double 741.
Found in an Electronic Design from the 90s, this circuit generates a mathematical function given by the...
This oscillator generates a fixed frequency signal determined by C1 and C2. In the case of 1 nF,...
This amplifier for distributing audio signals appears in other articles on this website and even...