You know how it is. You’ve got that new project running, and while it doesn’t consume much power, it also doesn’t give much indication of whether it’s functioning or just sitting there with a dead ...

A flashing LED is an excellent visual alarm. Unfortunately, the LED is a dc device and requires additional circuitry to operate from an ac source. Several circuits can perform the necessary function, ...

You know how it is. You’ve got that new project running, and while it doesn’t consume much power, it also doesn’t give much indication of whether it’s functioning or just sitting there with a dead ...

A pair of alternating flashing LEDs makes an excellent visual alarm. One of the LEDs remains illuminated, so there's little chance the alarm will go undetected, even by a casual glance. Several ...

One of the major kitchen blender brands on the market, Ninja is considered a very popular choice. In fact, a survey by research and strategy firm Lifestory ranks it as the top most trusted blender ...