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 is from an old European documentation, already influencing the unijunction oscillator that...
This circuit for cars of the time was found in a Popular Electronics magazine from the 90s. The...
Found in a Maxim documentation, this 1980s circuit drives 4 LEDs on a bar scale. The circuit does...