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.
This circuit was obtained from an Application Note from Linear Technology that manufactures the used...
With this circuit it is possible to select the upper or lower side band on an SSB transmission by...
This power control for the AC power line uses a Triac and an Unijunction Transistor. The control...