Many battery powered devices use two AA alkaline cells. Often you will not know when it is time to replace the batteries until the device powered by them actually stops operating. The hobby circuit ...

Here is a VLF receiver tuned to 300 kHz designed to detect the crackle of approaching lightning. A bright lamp flashes in sychrony with the lightning bolts indicating the proximity and intensity of ...

With this circuit you can flash some LEDs for your rc airplanes or any other uav just like the real strobe navigation lights ...

The tell-tale sound, flash of light, flames, and resulting smoke — all indications that an arc flash incident has taken place. It’s the ultimate workplace nightmare of every electrical professional — ...

The tell-tale sound, flash of light, flames, and resulting smoke is the ultimate workplace nightmare: an arc flash incident. Something has gone wrong, and people and equipment are in danger. In ...