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.

Bourns’ Riedon precision wirewound resistors offer a wide range of resistance values in multiple packages for demanding ...

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