This simple charger was found in a 1980s documentation. The transistor may be the TIP42 with a heat sink. R1 adjusts the load current. The transformer has 1 A of secondary current.
Found in Popular Electronics from the 90's, this circuit makes use of components from the time. |...
Indicated for 12 V systems, this circuit was obtained in a 90s Siliconix documentation. The...
The integrated circuit used in this 1990 project is uncommon in our market, and transistors...