Abstract: In the ignition apparatus for internal combustion engines, the internal combustion engine drives a generator and the generator charges a battery. The battery is connected to a boosting transformer which is connected with a semiconductor switch. The semiconductor switch causes a current to intermittently flow in the primary coil of the boosting transformer from the battery. An intermittence control circuit is connected between the semiconductor switch and the generator and controls the semiconductor switch to turn on and off a plurality of times per revolution of the generator in synchronism with the output of the generator. Thus, the semiconductor switch allows the transformer to generate a high voltage for ignition across the secondary coil. The intermittence control circuit includes an over-rotation preventing capacitor.

Abstract: An output supply control apparatus controls the supply of an output from an internal combustion engine magneto generator to its loads so as to effectively utilize the magneto generator. The desired ignition energy is obtained by charging a discharge capacitor of a contactless ignition system with a high induced voltage produced upon the rapid interruption of the short-circuit current in the generating coil, and also any other load such as a battery or lamp is energized by the high induced voltage exceeding a predetermined value. A constant voltage supply for the contactless ignition system ignition signal generating circuit is operated by the generating coil output current preceding the interruption. A regulator is included which monitors a lamp load voltage to commutate or transfer an excess output to the battery load and is operable in response to an overvoltage.

Abstract: An improved multi-spark capacitor discharge (CD) ignition having independent circuits for charging and discharging the main capacitor, a flyback DC to DC converter, and an inductive filter interposed between the ignition coil and the main capacitor on one side, and the charging transformer on the other side.

Abstract: An ignition system includes an alternating current power source which feeds a transformer having a primary winding, the primary winding being coupled to an electronic switch. The electronic switch intermittently interrupts current flowing in the primary winding and in the output circuit of the power source. Such electronic switch is made operable by virtue of the peak excursions of the alternating current thus supplying the necessary collector or emitter potential, depending upon the manner in which the electronic switch is connected, for the entire igniter firing cycle. A capacitor in series with the output circuit of the power source and with the primary winding enables current to be transferred out of the power source to such primary winding. Such electronic switch also provides discrete separation between successive output waveforms of successive ignition firing cycles. The system employs a temporary change accumulator inductor in the output circuit in series with the primary winding.

Abstract: A pulse transformer produces sufficient energy at its secondary winding to initiate arcing of a spark gap in response to the interruption of current flow to its primary winding. Upon initial arcing of the spark gap, a charged capacitor is coupled across the gap thereby extending arcing duration beyond that produced by the coil. The total spark energy is determined by the value of the capacitor and the voltage to which it is charged.The invention is adaptable to provide spark energy to each cyclinder of a multicylinder engine without the need for a distributor.