This circuit was found in the magazine of radio amateurs 73 in a 90's edition. The components are current and the transistor is of general use.
We found this circuit in an American 80's documentation. The circuit can be adapted to function as a...
Found in a 1964 Electronic Design, this circuit makes use of FETs of the time. These transistors can...
We found this circuit at Modern Electronics in January 1991. The magazine no longer exists, but...