Class A Amplifier

250

04:02:29

No description just some specs. 

- Input Sensitivity - 0.9Vrms
- Output Power - 39W
- Drawn Power - 177W
- Efficiency - 22%
- Frequency response - 5Hz-20kHz without attenuation. <1Hz - 100kHz at -3dB
- THD+N - almost immeasurable at 0.002%
- Ripple rejection - -78dB 

Just a little note on the amp. The voltage offset ia very stable in respect to the hFe, but the drawn current varies widely with hfe variation. 

published 9 years ago

nemethakos

9 years ago

Hi thebugger, have you built this circuit? It is similar to the op-amp in this image: http://www.williamson-labs.com/images/opamp-block_h.gif from this page: http://www.williamson-labs.com/480_opam.htm but the building blocks are a little bit mixed.

thebugger

9 years ago

No, it's different. Still based on an op amp but the power stage is completely different.

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