This dual-gate FET RF signal mixer circuit was found in a 1980s documentation. The circuit is intended for applications in superheterodyne receivers of the time.
Figure bellow shows how a digital frequency divider or counter can be created using the flip-flops containing...
This circuit was found in an ancient American documentation. With it is possible to double the...
This circuit was found in a Popular Electronics from the 90s. The circuit uses general purpose...