Some Ideas on Temperature Compensation for Audio Amplifier EF Triples

Temperature compensating an EF3 audio power amplifier output stage is not a trifling task.  There are 6 Vbe junctions, running at 3 different current densities, different temperatures and neither is the thermal performance of the heatsink assembly characterized In most DIY cases. This makes deploying a conventional 2 transistor  Vbe spreader (or Vbe multiplier as […]

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Michael Kiwanuka: SOA Protection for Audio Power Amplifiers

Power Amplifiers, and especially bipolar output designs, require output stage  protection  in the event of a fault, or the presence of a heavy or highly reactive load.  Michael Kiwanuka explains the intracacies and the design methodology in his paper here  soaprot_12-03-2012  

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