This third-order filter was found in a 1975 publication. The circuit must be powered by a symmetrical source. The components can be changed for operation on other frequencies.
This circuit was found in a 2005 Linear Technology sensor manual. The circuit can function as a shield...
In its original version of a 70s manual, this integrated amplifier, which is uncommon today, was...
This interesting FET-tester circuit was obtained from an old American documentation. The bipolar...