Abstract: The invention has for its object to solve the problem associated with the use of a flywheel magneto for supplying ignition power to multiple cylinder combustion engines. The flywheel magneto according to the invention is composed of a flywheel (1) supporting magnets arranged in groups (2, 3, 4, 5-6, 7, 8, 9). The magneto flywheel (1) coacts with a multi-leg (11-20) core (10) of magnetically conducting material, the spacing or pitch of the core legs being such that the number of legs form an integer whereas half this number has to form an odd number. Within each group the magnets (2-9) are spaced in agreement with said core pitch. Said groups (2, 3, 4, 5-6, 7, 8, 9) are separated two pitches.

Abstract: The invention relates to a generator arrangement, in particular, ignition systems for internal combustion engines. The arrangement comprises a multi-legged core of magnetically conducting material with the legs radially projecting towards a cooperating magneto flywheel, which exhibits a section with unsymmetrical magnetic flux. The legs carry uniformly wound windings and are connected in two groups in the case of a one-cylinder internal combustion engine. The one group comprises two windings interconnected such that they only deliver an induced voltage when passed by the unsymmetrical section. The other group delivers an induced sum voltage. The voltage of the first mentioned group controls the ignition process whereas the second group charges a capacitor, component of the ignition system.