Hughes suggests this circuit in a 1968 documentation. The circuit uses old transistors that can be replaced with equivalents. MOSFET is the critical component of the circuit.
This mixer uses only four passive component and can be used with high impedance sources. The input and...
This circuit was found in a Popular Electronics of the 90s. The resistor R4 determines the load...
This circuit was found in an American 1980s documentation. The transistors admit equivalents and the...