Dynohub: Unterschied zwischen den Versionen

There is a simple circuit using four diodes, called a "bridge rectifier" that gets around this. It effectively flips the polarity around every half-cycle (an oversimplification, I know) and turns the AC into DC with negligible loss. You could solder four diodes together in the proper configuration, as I did, but these days you can just buy a ready-made "full-wave bridge rectifier". [Considering that the Dynohub operates at low voltages, the loss is significant when using silicon diodes -- 1.4 volts. If you use germanium diodes, it is only 0.4 volts. Fancier circuitry can get the loss much lower yet, but this is only a do-it-yourself project for a serious electronics hacker. -- John Allen.]

From a 1952 History of Sturmey Archer:

The Sturmey-Archer Dynohub is truly named:-

"THE WORLD'S FINEST CYCLE LIGHT"

The ultra - modern generator, which is covered by world patents, has no mechanical losses whatever and electrically is highly efficient, giving an output of 2 watts at 6 volts. [The bulbs used were rated at 1.8 watts -- John Allen] Using the existing wheel bearings and having no troublesome contact brushes it is entirely without mechanical friction or wearing parts, so that the effort to propel it is negligible. Being gearless it is absolutely silent, and its position in the hub protects it from damage. Voltage regulation is remarkably good, giving a good light at low speeds without an undue rise in voltage at the higher speeds, so guarding against the burning-out of bulbs.

==Wartung eines GH-6 Vorderrad-Dynohubs==