Good 100W RMS Class AB Amplifier

Class AB Amplifier - known to be a good compromise between the utterly inefficient yet high quality class A design and the improved efficiency lower quality design class B. It has a fair efficiency level of 42% and very low crossover or whatsoever distortion due to the negative feedbackvqnd differential amplifier in place. The first negative feedback is to fix the output swing to a certain value so it doesn't go into cut off distortion while the second feedback provides variable/adjustable regulation of the output level and acts much like a variable volume control.the low power transistor (all but the last two) can be of any kind but the last two muat be a set of pairs like TIP41 and TIP42. Input impedance - 8kohm Output impedance - 4ohm/8ohm Quiscent current/power - 715mA,64W (can be readjusted to fit the any requirements) Voltage gain - 85 Current gain - 2000 Input sensitivity - 330mV Output power - 97W RMS in 4 ohms Frequency response - 20Hz-20khz^ Power draw - 230W for 4ohm Efficiency - 42%

published 10 years ago