Magnetstromapparat

The Magnetstromapparat ("magnet current apparatus" or "magnetic power apparatus") is one of two devices built by Hans Coler and described in BIOS Final Report No. 1043. It is a static device with no battery.

Construction

Six permanent magnets are wound so that the electrical circuit includes the magnet itself, arranged in a hexagon with two small condensers, a switch, and two nested solenoidal coils, one sliding inside the other. It is brought into operation by trial-and-error adjustment of the magnet separation and the position of the sliding coil.

Reported performance

Coler stated that the greatest tension he obtained from the Magnetstromapparat was 12 volts, and that the magnet strength did not decrease during use.

The BIOS team built a small model in 1946. After three days of fruitless adjusting, a first deflection appeared at about 9 a.m. at roughly 7 mm magnet separation. With the switch closed, the reading reached 250 mV by 11 a.m. and 450 mV by 12.30 p.m., maintained for about three hours until a soldered tag disconnected; resoldering did not restore the tension. A repetition recorded as 24.7.46 gave 60 mV after about three hours, maintained for more than 30 minutes, then falling to zero on further adjustment.

The team noted that the model was completely open and could be picked up, moved, tilted and turned without effect, and that the nearest mains cable was at least six feet away. They described the result as, "for the moment, inexplicable."

Later replication attempts

• George Hathaway reported about 50 mV from a 1981 reproduction.
• Claus Wilhelm Turtur obtained about 25 mW after extensive adjustment; the output was AC, not DC, with strong contributions from local radio transmitters in the Fourier spectrum, and a shielded room produced no serious signal.
• A pseudonymous poster ("Michel") posted a partial build on overunity.com with no results.

Assessment in the source

The BIOS team judged the observed effect genuine "in so far as could be tested" but could not explain it, and their own four laboratory experiments failed to confirm the sub-effects on which the claimed mechanism depended. A skeptical alternative recorded in the dossier is the silk-covered-copper-wire-battery-effect hypothesis. See comparison-coler-claims-vs-evidence.