This circuit was obtained in an old Elektor and can be adapted to use white power LEDs. The transistor must be equipped with a heat sink. The circuit has a battery charger.
The circuit we use makes use of Linear Technology's LT3080 (www.linear.com) which consists of a...
This circuit is from Popular Electronics from the 90s. The integrated circuit is not very common...
This traditional triac power control circuit can control loads up to 1000 W. The triac must be...