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Anonymous
basic RC circuit
2015-12-30 16:43:25 Post No. 16622029
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basic RC circuit
Anonymous
2015-12-30 16:43:25
Post No. 16622029
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I feel so dumb.
I'm using the LM386 amplifyer and have trouble understanding what that 0.05µF cap and 10 Ohm res does.
I'm no genius but I know it's meant to be a low-pass filter.
But the math seems to tell me it's useless ? Since potential U_2 ends up the same anyway i mean. I've tried to calculate the transfer function (U_speaker/U_in) of that part using resistor R_2 as speaker (which is bad i reckon now), and found something independent of the filter. I'm so confused.
I don't even need a detailed explanation, just tell me what I forgot...