By controlling the LED string with digital inputs, the user can use a microprocessor to easily create lighting effects from simple dimming, to color changes, to light directional steering. With ...

Building simple circuits with copper tape, LED bulbs, resistors, and watch batteries is not as simple as you might think. Notre Dame Elementary School STEM students are putting the engineering desi… ...

Adding a fourth LED only makes things worse, so series circuits are clearly not the go for lighting multiple LEDs. Parallel circuits These LEDs are connected in a PARALLEL circuit.

Driving multiple LEDs with one microprocessor GPIO pin is a well-known technique. Here's a way to accomplish the task that's simpler than other methods.

This boost circuit implements current mode control and senses the LED current via resistor R14. The output voltage is boosted to just over 30V to drive 10 LEDs at a regulated current of 0.35A. Often, ...

This ingenious LED Probe from [David] packs a lot of useful features into a simple, easy-to-implement circuit. Most multimeters have a diode test function that can be used to check LEDs; however ...

I needed a simple LED indicator showing that a particular voltage level had been reached—specifically, ... With the circuit values shown, R2 will drop a bit less than 5 V before D3 turns on.

Ménard, Peugeot and colleagues have now shown that multiple photons can be produced far more easily using a simple superconducting circuit that comprises a capacitor, a coil inductor, and a Josephson ...