The circuit shown uses an operational amplifier that is uncommon nowadays. The circuit was obtained in a 1994 Linear Applications Handbook by National Semiconductor.
This low frequency circuit was found in documentation from the 1980s. The values of R and C...
This circuit has a frequency range of 30 Hz to 100 kHz with an output signal of 1 Vrms. We found...
Found in Popular Electronics from the 90s, this circuit uses still common components. Its power is 20...