A type of explosive generator that relies on the principle of conservation of flux. Roughly, the device consists of a solenoid, a capacitor or battery or other method to energize the solenoid, and explosive charges to compress the solenoid.

In operation, the solenoid is energized, creating a magnetic field running through it. The explosive are then detonated, compressing the solenoid. Since the total magnetic flux through the solenoid tends to be conserved, this causes an enormous current to form in the solenoid. Typically, they generate currents on order of 60 times the initial current for a few milliseconds.

Flux compression generators can be staged, with each one energizing the next stage. This is useful where truly massive currents are required, such as an EMP bomb.

See also: electromagnetic pulse gun

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