Создание 6Е5С. Или о вреде безалкогольного пива =)))

So-called “magic eye“ tubes are display devices, which indicate signal level by the projection of wedge-shaped shadows on a glowing view screen. They were developed in the 1930’s for use as tuning indicators in radio receivers, and as alternatives to the then-expensive-to-manufacture meter movements. Because they haven’t been produced in decades, and because they degrade and wear out with use, the supply of functional eye tubes is dwindling. I thought there might be value in coming up with a potential su