Powerful Audio Amplifier using TIP122 & TIP127 Transistors | Electronics

[@rtchau4566]

Something inside me screams in agony when I see "+12VDC" going via a speaker's voice coil. I assembled this circuit myself and there is a VERY noticeable offset in the speaker cone... is there any way to eliminate that? Or change the design so the supply voltage doesn't have to go via the speaker?

[@MrSalchicha90]

Un capacitor de desacople

[@electronic7979]

Nice video

[@CircuitsDIY]

Thanks 😊

[@sneakypeek100]

What is minimum and maximum power output?

[@EricFontaineJazz]

I'm not the poster, but looking at the datasheet for the Darlington transistors, their rated maximum collector current is 5 A or 8 A peak. The equation P=IV gives me a back-of-the-envelope estimate that with a maximum peak voltage difference of 12 V, the maximum sustained power would be 60 W with a maximum peak power of 96 W.

[@EricFontaineJazz]

That was just a quick back-of-the-envelope estimate of the max, and I think really is much less. And according to the poster's hack-a-day project page, they are using an 8 ohm speaker. So seems to me that according to Power = (Voltage ^ 2) / Impedance, that 12 V across an 8 ohm speaker results in a peak power of 18 W. I'm also reading someone else comment on another video that looks like the same circuit that is saying since this is a class AB amp, it can only get 75% power efficiency and that it is really a 15 W amplifier, but I don't know how exactly they got that number.

[@gersonkristoffduggoy5324]

distorted?

[@АнатолийБулкин-ш9ю]

А где схема?