Abstract: Disclosed herein is a magneto regulator circuit for regulating charging of the battery by the output of a magneto alternator. The regulator circuit includes a first circuit operative for connecting and disconnecting the battery in series with the alternator to allow or prevent charging of the battery. The first circuit includes a thyristor having a gate and operative when a trigger signal is applied to the gate for connecting the battery in series with the alternator to allow charging of the battery, a trigger switch which can be rendered conductive, subject to the battery voltage, for applying the trigger signal to the gate, and a shut-off switch for rendering the trigger switch conductive.

Abstract: Disclosed herein is a voltage regulated magneto powered capacitive discharge ignition system including a charge capacitor having opposite plates, a magneto including a charge coil having opposite end terminals, and a circuit including a full-wave bridge rectifier having input terminals respectively connected to the end terminals of the charge coil, and having output terminals respectively connected to the plates of the charge capacitor for insuring unidirectional current flow from the charge coil to the charge capacitor. The system also includes a voltage regulator including a triac having a gate, and having first and second anodes respectively connected to the end terminals of the charge coil, and also including a varistor having one terminal connected to one of the end terminals of the charge coil, and having another terminal connected to the triac gate.

Abstract: Disclosed herein is an engine ignition system comprising a charge capacitor which is periodically charged, first and second ignition coils respectively including first and second primary windings and first and second secondary windings connected respectively to first and second spark plugs, first and second electronic switches respectively including first and second anodes connected respectively to the first and second primary windings, first and second cathodes connected to the charge capacitor, and first and second control elements operable, upon application thereto of a trigger pulse, to cause the first and second switches to be conductive, a relatively rotatable magnet and coil for generating trigger pulses in response to engine rotation, which coil has first and second ends respectively connected to the first and second control elements, and means for preventing false triggering of the switches comprising a second capacitor having a first plate connected to the first and second cathodes and having a seco