Crystal oscillators generate pretty accurate frequencies, but the output varies a bit depending on the operating temperature. The crystal oven heats a crystal to a constant temperature to get the most accurate and consistent frequency possible. Via Hack a Day.
Resistors and other electronic parts are rated to be within a certain percent of the specified value. A 1000 ohm resistor with a ±10% tolerance could have an actual value between 900 and 1100 ohms. So what’s the actual range of values in a bunch of resistors? Due to manufacturing techniques, it might not be […]