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?
@MrSalchicha904 ай бұрын
Un capacitor de desacople
@electronic79792 жыл бұрын
Nice video
@CircuitsDIY2 жыл бұрын
Thanks 😊
@sneakypeek1002 жыл бұрын
What is minimum and maximum power output?
@EricFontaineJazz2 жыл бұрын
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.
@EricFontaineJazz2 жыл бұрын
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.