Auto Solar garden lighting with LEDs. Efficient automatic solar garden lighting circuit with minimal parts the best offer is the fact that is totally auto and also the Solar power provides a light detector. Switches the Lamp off at Dawn, charges battery during daytime and switches the Leds ON in the evening providing 100 Lumens illumination throughout the night.
The solar power must provide 5.5V and 150mA. Battery is really a 3.7V/1500mAh type which is charged at 80% capacity in 10 hours. The transistor is 2N3906.