Re: RS Stereo Amplifier PCB
I vaguely remember something about those ICs originally being designed by Plessey for use as servo-drivers or Radar scanning or something where the output current slewed relatively linearly and slowly rather than being distinctly-peaky like an audio signal: in such applications they worked just fine. BUT the little wires linking the semiconductor 'slab' to the leadout-pins were rather thin, and when they were subjected to instantaneous high-power transients on a regular basis the effect of repeated thermal-cycling resulted in them embrittling and going open-circuit.
[I have a vision of a test-suite full of amplifiers all playing Ravel's Bolero into dummy-loads....]
|