Oooo mushroom cloud...so cool, my favorite man made cloud.
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My first attempt at a quasi comp amp based on 2N3055 worked fine with Jefferson Airplain White Rabbit...right up until "Tell 'em a hookah-smoking caterpillar", made it halfway throiugh catepillar and became a genuine a firegod sacrifice with a nice, if rather small, mushroom shapped cloud.
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I was at school using their scope to check for ultraonics....
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My first decent self made, self etched PCB, amp, and power supply all went up nicely.
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It was also so silent.... until the heat sensor over me went off.
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This was way pre-smoke detector.
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It was so much fun explaining to the firemen "Well you see it was an amplifier..." their looks were priceless.
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And yea I really should have used a fuse in the V+ power rail.
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The post mortum suggested both 2N3055 shorted.
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Fuses are mandatory, not an option.
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