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Audio power is the electrical power transferred from an amplifier to a loudspeaker, measured in watts. Learn how audio power is limited by voltage, current, temperature, and mechanical factors, and how it is measured with sine wave signals and FTC rules.
Power rating is the highest power input allowed to flow through equipment, such as resistors, speakers, motors, or transformers. It depends on factors such as heat, efficiency, cooling, and frequency, and may vary for different applications and conditions.
A per-unit system is a way of expressing electrical quantities as fractions of a base unit, simplifying calculations and comparisons in power systems analysis. Learn how to choose base values, convert units, and use per-unit formulas for single-phase and three-phase systems.
A low-pass filter is a filter that passes signals with a frequency lower than a cutoff frequency and attenuates signals with higher frequencies. Learn about the ideal and real low-pass filters, their frequency and time responses, and how they are used in various applications such as audio, optics, and electronics.
Krpm is the unit of motor velocity constant, which is the speed of a motor in revolutions per minute per volt. Learn how to calculate krpm and other motor constants, such as torque, power, and back EMF, from the Wikipedia article.
Root mean square (RMS) is a mathematical concept that measures the average of the squares of a set of numbers or a continuous function. RMS is used in electrical engineering to calculate the power dissipated by a resistor or the voltage and current of an alternating current.
Volt-ampere (VA) is the unit of apparent power in an electrical circuit, equal to the product of root mean square voltage and current. Learn how VA differs from real power (watts) and reactive power (var), and how it is used for generators, transformers and UPSs.
Find ways to reduce stress.Examples include things like yoga or meditation. Limit your caffeine intake when possible. Using too much caffeine can increase heart rate. Limit intake of energy drinks.