This 1967 Electronics World circuit is suitable for frequencies up to 1 MHz. The setting applies to virtually any junction FET.
This MOSFET amplifier operating in the VHF range was found in an old American telecommunications...
We found this circuit in a 1995 publication. It makes use of infrared LEDs of the type existing at...
We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the...