Amplifier picking out parts.

Thread Starter

Seb1929

Joined Feb 20, 2015
26
The capacitors are dictated by the speaker impedance and the low frequency range.
You can forfeit some low frequencies by choosing less capacitance.
You can choose higher impedance speakers, but the penalty is that less power will be delivered because of the low voltage available.
My speakers is 1W at @ 8 Ohm (I will use two)
 

#12

Joined Nov 30, 2010
18,224
8 = 1/(2 Pi F C)
16 Pi F C =1
F C = 1/(16 Pi)
F C = 0.02
for example, a 100 uf capacitor will start limiting the low frequencies at 200 Hz.
 

#12

Joined Nov 30, 2010
18,224
Two different people helping is working out very well in this one. :)
Each of us thinks of different ways to solve the problem.
 

#12

Joined Nov 30, 2010
18,224
Not even close.
3.3V times 0.1A would be 1/3 of a watt if the amplifier was 100% efficient...which it isn't.
 

Thread Starter

Seb1929

Joined Feb 20, 2015
26
So two 3V at 240mAh will output total of 1,44W will that be enough for the TDA2822M that requires 1.8-15V and will it output 1W at 8 ohm? (Speaker needs 0,5wMIN and 1wMAX)
 
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