With a 4k1 collector resistor and 16mA drive into the led, the chosen (read ‘cheapest on ebay’) 6N135 is supposed to beat 1.5μs for both turn on and turn off, with typical figures of 90ns and 800ns.

Electricity powers everything from your phone to your refrigerator—but have you ever wondered how it’s controlled inside a ...

This video breaks down how resistors work and why they’re one of the most essential components in every electronic device.

A unique mechanical design aspires to remove heat from this LED light bulb’s insides, but you still need to keep external ventilation in mind.

A simple way to stabilize the operating temperature of any components that need it. Part 1 shows the purely analog approach, ...

In modern homes, apartments, and offices, multiple entrance doors are common. Traditionally, each door requires a separate doorbell, which increases cost and ...

In the late 1980s and 1990s, the Game Boy redefined handheld entertainment. With its chunky buttons, monochrome screen, and ...

This project gives a whole new meaning to DIY PC. We don’t know how capable you were as a teenager, but could you have ...

Computing systems that mimic biological neural networks underlie many artificial-intelligence applications. But these ...

Research using tactile sensors can be used for other purposes. The past decade has seen an abundance of innovation and ...

By isolating each section, Eversolo minimizes noise and distortion—allowing for a cleaner soundstage and more precise stereo imaging. Precision Volume Control: The DAC-Z10’s independent left and right ...

Backup generators are gaining a new lease on life in data centers due to the chronic shortage of available power across North ...