Calculadora de Amplificador de Audio
Calcula la potencia máxima de salida, eficiencia y sensibilidad de entrada de amplificadores de audio.
Fórmula
P_{out} = \frac{V_{out,peak}^2}{2 R_L},\quad V_{out,peak} = \frac{V_{cc} \times 0.9}{2}
Referencia: Cordell, "Designing Audio Power Amplifiers" 2nd ed.
Cómo Funciona
Audio power amplifiers convert low-level audio signals into high-power electrical signals capable of driving speakers. The power output calculation depends on several critical parameters including supply voltage, load resistance, and amplifier class. Different amplifier classes have distinct efficiency and distortion characteristics that significantly impact audio performance.
Ejemplo Resuelto
Problem: Calculate maximum output power for a single-supply 12V audio amplifier with an 8Ω speaker load Solution: 1. Vpeak = 0.45 * Vcc = 0.45 * 12V = 5.4V 2. Pout_max = Vpeak²/(2*RL) = (5.4V)²/(2*8Ω) 3. Pout_max = 29.16V²/(16Ω) = 1.82W
Consejos Prácticos
- ✓Choose amplifier class based on required efficiency and sound quality
- ✓Consider thermal management for high-power designs
- ✓Match speaker impedance carefully with amplifier specifications
Errores Comunes
- ✗Ignoring amplifier class efficiency limitations
- ✗Not accounting for peak voltage vs RMS voltage
- ✗Overlooking thermal and load impedance constraints
Preguntas Frecuentes
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