Simple Current Feedback Power Amplifier


Posted on May 20, 2012

Figure 1 shows the circuit. A major change from all of the designs from that era is the speaker coupling capacitor - 1000uF (for a -3dB of 20Hz and a 8 Ohm load) was the most common value. This is too small, and the 2200uF shown is actually marginal. 4700uF would be better, or even more - but that would defeat the purpose, since the amp would no longer be cheap.


Simple Current Feedback Power Amplifier
Click here to download the full size of the above Circuit.




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