Crystal radios used to be the “gateway drug” into hobby electronics. Trouble was, there’s only so much one can hope to accomplish with a wire-wrapped oatmeal carton, a safety-pin, and a razor blade.

Available in SOD-323, SOT-23, and SOT-143 packages, the MA4E2200 Series zero-bias detector silicon Schottky diodes are suitable for RF envelope detection with temperature compensation and in limiter ...

The history of the diode is a fun one as it’s rife with accidental discoveries, sometimes having to wait decades for a use for what was found. Two examples of that are our first two topics: thermionic ...