In some houses, the electricity meter (Fuse) is badly lit place. If 12V transformer is also placed in this area with a circuit, it may be more useful in providing emergency lightening by two high ...

The function of an LED is to emit light when the device is forward biased within its operating range, and it’s known by most people that an LED can also operate as a photodiode. Perhaps some readers ...

Just think, you could be in your bathroom at midnight and there could be an unexpected blackout. If the bathroom lamp relies only on grid power, think about what a scene that would be! A recent guest ...