This circuit was found in documentation from the 1980s. The circuit uses several components of the time, which are uncommon today. We must not supply it with a transformerless power supply.
This circuit lets through the 300 Hz to 3kHz range that corresponds to the human voice. We found it...
This complementary circuit increases the output power of an operational amplifier. Outputs with...
In the figure below we have an interesting circuit for those with a project that requires a...