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.
According to the 1990 documentation in which we found this circuit, the chickens must be fed at...
Although the integrated used originally is uncommon today, more modern operating equivalents can...
This circuit was found in a General Electric documentation from 1965. The purpose of this circuit is...