Found in Radio Electronics this circuit uses a fotodiac to drive a triac. The circuit can use equivalent triacs.
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...