The circuit above is an light sensitive automatic switch which functions in absence of light. The IC 4060 works as an oscillator and the generated signal is applied to the base of T4 transistor.

Here, we have explained about the circuit that automatically controls the intensity of street lights which is designed using microcontroller and LEDs. It is very useful to save the power. Street ...

Koito Manufacturing has patented a multi-function vehicle lamp featuring multiple light emitting diodes. The design includes a switch that halts current to the tail input when the turn input is ...

Hbrightness metal halide lamps typically have an efficacy of greater than 100 lumens/watt and have a lifetime of 20,000 hours. HID lamps produce light using a technique similar to that used in ...