Stromzeuger

The Stromzeuger ("generator") is one of two devices built by Hans Coler and described in BIOS Final Report No. 1043. It is a magnet, flat-coil and copper-plate arrangement with a battery-excited primary circuit.

Claimed performance

Coler claimed the Stromzeuger could give about 6 kW output indefinitely from a few watts of dry-battery input. No working example existed at the time of the 1946 report; Coler offered to build one, and the BIOS team recommended that the offer be taken up.

The 1926 tests

Prof. M. Kloss tested the Stromzeuger on 3 March 1926 and computed roughly 1.7 W in against roughly 8 W out — a ratio of about 4.7×. Prof. W. O. Schumann tested it on 19–20 March 1926 and computed ratios of about 6.7× (two bulbs) and about 4.85× (one bulb). Both could not explain the energy source. See kloss-stromzeuger-test-1926 and schumann-stromzeuger-test-1926.

The 1946 experiments

The BIOS team's four laboratory experiments on the Coler & Frohlich apparatus largely failed to confirm the claimed sub-effects, and the 1943 report concludes that earlier successes were due to "chance, or happy accident." The BIOS team's own 1946 test of the Magnetstromapparat produced only millivolt-level, non-reproducible output.

Later claims and hypotheses

• Claus Wilhelm Turtur claims both Coler engines exceeded 100% efficiency and that demonstrations at Berlin, München, Trondheim and Kopenhagen confirmed more output than input.
• "Smudge" claims the Stromzeuger was based on the Norrby device and proposes a Corbino Effect / anomalous-hall-effect mechanism.
• WO1994001814A1 — Enhanced Transformer cites Coler's research as the origin of solid-state permanent-magnet generation.

Assessment in the source

The Stromzeuger is the subject of the largest claimed multiplication ratios in the dossier, and also of the strongest contradictions: the 1946 BIOS experiments did not confirm the 1926 and 1937 results, and the 1943 Coler & Frohlich statement records that the newly developed apparatus could not be made to work. See comparison-coler-claims-vs-evidence.

Further reading

Cyril Smith's 2005 paper reconstructs the device's spool, plate and exciter circuits from the report's written description and proposes, without new measurements, that the iron cores acted as the power source: see Cyril Smith's 2005 Reading of Coler's Stromerzeuger: Iron Cores, Precessing Electrons and Absolute Negative Resistance.