Found in a 1965 Electronic Design, this circuit divides the frequency of a cascaded signal using unijunction transistors. The bipolar transistor supports an equivalent. The shock is 470 mH.
We found this configuration in a documentation for radio amateurs from 1974. The circuit can be...
E) This audio filter was found in the August 1993 issue of Radio Electronics magazine. It cuts low...
This circuit using current components was found in an old documentation. It is a sequential circuit...