2) LED as a Continuity tester: The above shown circuit is LED as continuity tester. This circuit is used for checking continuity of cables, connectors and switches. When A and B terminals are shorted, ...

"For LED circuits, you can simply tape the LEDs on to the copper traces to make the connection," explains Qi. "For more complex circuits with many connections, solder your components to the copper ...

Midwest Circuits' LED street-light technology shines Published: Jun. 12, 2008, 9:00 a.m. By Sarah A. Rigg Patel ...

Finally, they showed that when the circuit was deposited onto a polymer substrate, its performance remained stable even when bent to a radius of 15mm – confirming its flexibility. Thanks to these ...

This is a simple blinking led circuit powered from 220V that can be used to mark special places or as voltage indicator. The voltage from the mains charges the capacitor through R1 resistor and D1 ...

Many equipment manufacturers prefer protection circuits combining resettable overcurrent protection devices with upstream fail-safe protection. In this example, R1 represents a ballast resistor used ...

This circuit is not complex, but it saved the day in an application involving visual inspection of the spray pattern of fuel injectors for quality and consistency. In this application, xenon strobe ...

Chibitronics combines familiar adhesive stickers with bits of LEDs, sensor circuits, and even a programmable microcontroller, to create a playful set that educates while adding some flash to one ...