This circuit was found in American documentation from the 1960s. The operational amplifier is from that time, but the configuration applies to modern equivalents.
This circuit measures alternating voltages on 5 scales and its accuracy depends on the tolerance of the...
This circuit was obtained in an American documentation translated in the 80's. The circuit can be...
Figure bellow shows another configuratíon for a Iow-frequency sine wave oscillator using CMOS...