This circuit generates a dual-tone bells ringing similar to most door-bell units. It can be used in many applications other than door-bell. In the Notes below several options will be given in order to ...

Abstract: An equivalent circuit diagram for a frequency selective surface (FSS) consisting of hexagon ring elements is presented. It provides the designer with a profound physical understanding of the ...

The diagram in this article provides guidance for checking the continuity of ring final circuit conductors for compliance with Regulation 612.2.2. This should be viewed as step two to the post: ...