The operational amplifier of this circuit can be the 741. The circuit has very low consumption and can be powered by two 9-B batteries. Low voltage amplifiers can be used.
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...