Found in an American publication from 1968, this circuit can be made based on a TIP42 that must be mounted on a heat sink. The transformer is 25 V with a current of 3 to 4 A.
This flasher was found in an old Hands On, but uses common components. The optocoupler can be...
This stage for JFETs was found in a 1965 US publication, but is valid for modern components. |...
I found this simple circuit from an English magazine from 1984. The circuit can be easily...