This is an oldie, but oh, man is this ever good. It’s a Nixie clock made without a microcontroller. In fact, there aren’t any logic chips in this circuit, either. As far as we can tell,… ...

There was this test system that comprised a huge row of equipment racks into which various items of test equipment would be mounted. Those items were a digital multimeter, an oscilloscope, several ...

A little history British chemists discovered neon in 1898. Four years later, a French engineer named Georges Claude zapped a sealed glass tube filled with the gas, creating the first neon lamp.

Neon bulbs work on the principle of voltage-induced ionization, creating a visible glowing plasma. If the applied voltage is high enough, around 60 to 80 V, electrons get knocked off the neutral ...

Moore neon glow lamp, ca. 1895. Brass medium-screw base with collar and insulator retainer, porcelain insulator. Two tungsten electrodes: outer electrode is a ring just above the stem; the inner ...