This circuit was found in an American documentation for radio amateurs of the 80's. The transistor, which is uncommon nowadays, is a double-gate MOSFET. Details of the coils are not given in the original diagram.
This circuit was found in an American documentation for radio amateurs of the 80's. The transistor, which is uncommon nowadays, is a double-gate MOSFET. Details of the coils are not given in the original diagram.