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Entombing that mess with a squirt of hot melt glue
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We excavated the reddish lump
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I expected the line to pass through the origin, which it most certainly does not
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The RMS numbers may not have any significant figures.
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There’s definitely not much benefit in driving the tube beyond about 60% PWM
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At 30% PWM the beam current looks a bit more reasonable
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The bottom trace (green, channel 4) is the laser tube current
The Smell of Molten Projects in the Morning 