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.
We found this test circuit in Radio Electronics magazine from July 1962. The circuit uses...
We found this circuit in an American publication from the 1980s. Equivalent modern operational amplifiers...
The transistors in this circuit can be the BC548. Capacitors determine the frequency and can be...