amp

178

05:59:45

why is voltage so low after capacitor? if I increse resistance on output I get more voltage but speaker is 3ohm 

published 6 years ago

Robert_Kidd

6 years ago

Think about what impedance the 1uF capacitor represents at 2kHz.

alexpu

6 years ago

http://everycircuit.com/circuit/6185968988848128

stjepanniki

6 years ago

I made it and output capacitor is 47uf (I had that one) and I have 0.8V output and it actually sound good, transistor is C1815

stjepanniki

6 years ago

Robert I didn't think about that, tnx 🍻

Robert_Kidd

6 years ago

You’re welcome.

fatcat2

6 years ago

The output impedance of the transistor amplifier is way greater than your speaker's resistance. Utilise maximum power transfer theorem and start designing! Another way is to add a common emitter buffer with 3 ohm output resistance.

stjepanniki

6 years ago

fatcat2 I will research more on that topic tnx 🍻

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