When working around mains voltages, it can be useful to know whether a given circuit is live or not. While this can be done by direct connection with a multimeter, non-contact methods are available ...

This home smoke detector circuit warns the user against fire accidents. It relies on the smoke that is produced in the event of a fire and passes between a bulb and an LDR, the amount of light falling ...

This infrared detector can be used to detect the presence of modulated infrared signals in its vicinity from any electronic source, for instance, an IR handheld remote controller. It can also be used ...

This simple 4093-based audio peak detector from December 2004 monitors music and turns on a small light when the sound gets ...

Residential and commercial circuit breakers face three major challenges: detecting arc faults reliably, reducing false trips ...

A custom comparator IC that has fast response time and hysteresis protects a car's engine control unit from failures on monitored peripherals that create high current conditions. In most modern cars, ...

Microchip’s TC54 series of voltage detectors are well-suited for battery powered systems because they can operate on current as low as 1 µA. To view the application note, click on the URL below.