In this charger, the charging current is basically limited by the LEDs. The transformer is a low current type, on the order of 30 to 50 mA. The keys select the load currents. The resistors in series with the batteries determine the current.
In this charger, the charging current is basically limited by the LEDs. The transformer is a low current type, on the order of 30 to 50 mA. The keys select the load currents. The resistors in series with the batteries determine the current.