I remember them but thought they were more than a diode.
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On Mon, 16 Jul 2018 04:33:56 -0400 (GMT-04:00), you wrote:
What I remember were thermistor disks that prevented the initial surge from blowing the filament in old bulbs. I saw more than one of them that had failed. They just crumbled into pieces, like those used in TV degausing circuits.
Michael A. Terrell
I remember seeing ads for those diode disks years ago.? I figured it was just more snake oil.
-Dave