Tuesday, 16 July 2013

Interesting Display

This is just a taster. This is an interesting edge-lit numeric display from the 1960s, a successor to the Nixie tubes. The arrival of 7-segment displays in the late 60s probably made these ones obsolete so they are quite rare.

Each digit 0-9 is inscribed on a thin piece of transparent acrylic and these are sandwiched together. Each digit can be illuminated by its own 28-volt bulb.

Nowadays bright white LEDs are the alternative to small bulbs so here we have the digit '8' being lit up by an LED driven from 5 volts.

More to follow.

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