And are these to be found on the chinese boards or on the TI EVM 3255 board?
Being able to spot these on a board is probably level 3 -5. 😀
Being able to spot these on a board is probably level 3 -5. 😀
If you look at the TP3255EVM schematic, there is a .01 uf capacitor in series with a 3.3 ohm resistor to ground just before the speaker output.
Again, I'm not sure the exact function of this filter, but I would think it would load the outputs even with no speaker attached.
Not sure if all class d amps have this, but as I understand it, they all should.
I can't guarantee this is the reason I have never had a problem running a class d amp with no speaker attached, but it's my theory.
Good suggestion to have a look at the documentation of the documented board; I found them on page 18 of http://www.ti.com/lit/ug/slou441/slou441.pdf .
Then found them on the board and on 7 different Chinese boards as well.
That makes me suspect that the burned boards had a broken or missing zobel or there was something else going on and not having a load connected was suspected and put out as truth.
Then found them on the board and on 7 different Chinese boards as well.
That makes me suspect that the burned boards had a broken or missing zobel or there was something else going on and not having a load connected was suspected and put out as truth.
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