Description: This recall involves neon power supply transformers designed to power commercial signs. They are in black metal boxes about 4.5 inches long by 3.5 inches wide with rows of vents on ...

[glasslinger] began his build by taking an old 15,000 Volt neon sign transformer and repurposing the coils and cores for his gigantic 50,000 volt transformer.

His reactor was modeled after a tokamak, a well-known design in fusion science. But rather than rely on lab-grade tools, he used a 12kV neon sign transformer to power the device.

The exhibit on the left uses a neon sign transformer, the one in the middle is based on a transformer from an X-ray machine, and the example to the right uses a microwave oven transformer.

Berger said about 200 tubes of neon and 20 transformers help light up the signs. While the front may look brand new, the back is still the same as it was in 1976.