Found in a 73 magazine for radio amateurs of the 1980s, this circuit uses a dual-gate MOSFET. This component is not currently common.
This circuit was found in a 1987 edition of the United States' Hands On Electronics magazine. The...
Found in an old American publication, this circuit generates sweep pulses. The circuit generates 200...
This circuit is from 1992 documentation. The transistor can be a TIP42 with a good heat sink for...