https://amplifiercircuit.net/260w-power-audio-amplifier.html Amplifier Project Schematic Diagram Sat, 05 Jan 2019 04:09:16 +0000 hourly 1 https://amplifiercircuit.net/260w-power-audio-amplifier.html#comment-26276 Sat, 05 Jan 2019 04:09:16 +0000 http://amplifiercircuit.net/?p=1711#comment-26276 Well, I tested it (only at +/-30VDC) and got an output power of around 60W peak. That was using TIP3055/TIP2955 as ouput devices instead of the Darlington ones. Having said that, Darlington transistors would not constitute higher power, rather higher current handling capabilities. So, I’m not sure how you calculated it’s output power, but I’m assuming you did P=V*I, so you took the output p-p swing and multiplied it by it’s current draw. This would be incorrect. The calculation is P=(Vpeak^2)/R, so half the p-p voltage squared divided by the output load. Secondly, I have no idea why you have a 10R/5W resistor in series with the output before the speaker, without an inductor coil. This serves no purpose except introducing distortion, unless you were attempting to use it for short-circuit protection. Finally, I also have no idea why you’re using a 5W 10R resistor in the Zobel network, a 1W devices will be sufficient. That aside, the frequency response is good and produces a nice power of 50W (not 260W) which is clean.

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