Exponential Generator

The Exponential Generator is a device created by the human scientist Doctor Arkeville in his secret laboratory on Earth. Its precise specifications are unknown, but it has an almost unlimited power output; some speculate that it has the ability to destroy the entire universe.

The Transformers cartoon
Starscream learned from Doctor Arkeville of the generator in his secret laboratory. Locating the device, Starscream wired the generator to build up to an overload which would have destroyed the entire planet Earth. Megatron discovered the generator and attempted to use it as a source of power not realizing of the overload. Optimus Prime made Megatron aware of this and the two launched the weapon into space where it exploded, incidentally knocking Starscream back towards Earth after attempting to escape - tough luck.

Shattered Glass
Cyclonus is powered by one of these.