This circuit has an accuracy of 1%. The components used must be precision as well. The input frequency range is 40 Hz to 10 kHz with the indicated components.
This circuit obtains phase-inverted signals from a single signal. The circuit uses two LM741...
This circuit with the HA2400 was found in the March 1980 Radio Electronics magazine. The circuit has...
This circuit with RIAA equalization is from 1985 US documentation. The circuit has a flat response...