Artículos de Información Técnica

Medicion amplificadores de audio

http://www.epanorama.net/documents/audio/amplifier_power.html De aquí: RMS power To make it short, an RMS power value is directly related to perceivable energy (acoustical, heat, light - or what else applies). RMS is really a rather meaningless figure, when measuring power. R.M.S. is useful for measuring the power-producing equivalent voltage. Thus 10 Volts RMS will produce the same power into a given impedance that 10 Volts DC would produce (onto a resistance) Any waveform of 10 V R.M.S. will produce the same power into that impedance. This is because it is the root of the mean of all the average squared voltages to which Norbert Hahn referred in the prior post. It is if little meaning to compute the mean of squares of all the power values in a wave. RMS, when applied to power measurements, has come to mean "sine-wave power." A 100-Watt "RMS" amplifier can produce a 100 Watt sine-wave into its load. With music, the total actual power would be less. With a square-wave, it would be more.