Abstract: A switched capacitor voltage converter circuit includes: a switched capacitor converter, a control circuit and a zero current estimation circuit. The switched capacitor converter includes at least one resonant capacitor, switches and at least one inductor. The zero current estimation circuit is coupled to the at least one inductor and/or the at least one resonant capacitor, for estimating a time point at which a first resonant current is zero during a first process and/or a time point at which a second resonant current is zero during a second process according to a voltage difference between two ends of the inductor, and/or a voltage difference between two ends of the resonant capacitor, to a generate a zero current estimation signal accordingly for generating the operation signal.

Abstract: An ignition circuit and a method of operating an igniter (preferably a traveling spark igniter) in an internal combustion engine, including a high pressure engine. A high voltage is applied to electrodes of the igniter, sufficient to cause breakdown to occur between the electrodes, resulting in a high current electrical discharge in the igniter, over a surface of an isolator between the electrodes, and formation of a plasma kernel in a fuel-air mixture adjacent said surface. Following breakdown, a sequence of one or more lower voltage and lower current pulses is applied to said electrodes, with a low “simmer” current being sustained through the plasma between pulses, preventing total plasma recombination and allowing the plasma kernel to move toward a free end of the electrodes with each pulse.

Abstract: Provided herein in some embodiments are pharmaceutical compositions comprising a prostacyclin (PGI2) receptor agonist selected from 2-(((1r,4r)-4-(((4-chlorophenyl)(phenyl)carbamoyloxy)methyl)cyclohexyl)methoxy)acetic acid (Compound 1) and pharmaceutically acceptable salts, solvates, and hydrates thereof, as disclosed herein. In some embodiments the pharmaceutical compositions comprise a compound selected from 2-(((1r,4r)-4-(((4-chlorophenyl)(phenyl)carbamoyloxy)methyl)cyclohexyl)methoxy)acetic acid (Compound 1), and pharmaceutically acceptable salts, solvates, and hydrates thereof, in an amount equivalent to a therapeutically effective amount of Compound 1, the composition having a release rate by weight of the compound in an aqueous medium that is one or more of release rates (a), (b) and (c) as disclosed herein. The compositions of the present invention are useful in the treatment of PGI2 related disorders, such as those disclosed herein.

Abstract: A power source supply system for a magnetic resonance imaging (MRI) apparatus that has multiple loads operating in a magnetic field environment, has an AC/DC conversion circuit that converts a supplied AC current to a first DC current having a predetermined first voltage, a branching element that supplies the first DC current in separate paths respectively to the multiple loads, a switching power source, disposed in each of the loads that converts the first DC current to a second DC current having a second voltage capable of being supplied to the load, with a switching frequency of the switching power source being set such that a positive integer frequency multiple thereof is offset from the Larmor frequency of the MRI apparatus.

Abstract: The invention relates to liquid compositions for use with hair removal devices comprising a methathesized unsaturated polyol ester for improved lubrication.

Abstract: Fatty acid-based, pre-cure-derived biomaterials, methods of making the biomaterials, and methods of using them as drug delivery carriers are described. The fatty acid-derived biomaterials can be utilized alone or in combination with a medical device for the release and local delivery of one or more therapeutic agents. Methods of forming and tailoring the properties of said biomaterials and methods of using said biomaterials for treating injury in a mammal are also provided.

Abstract: Compositions comprising sun-care actives and self adapting polymers are disclosed. Self adapting polymers align themselves with the hydrophilic group pointing to the surface during application thus delivering an aesthetically pleasing surface to the consumers with a pleasant after feel. These polymers then rearrange upon contact with water so that the hydrophobic groups now point to the surface which then increases the water resistance of the formulation.

Abstract: The present invention discloses methods for prevention and prophylactic treatment of plant diseases by application of glyphosate to a plant in need of treatment. In certain embodiments, soybean plants in need of treatment at vegetative and reproductive growth stages prior to or subsequent to infection, may be treated with glyphosate in order to prevent infection or suppress disease development, symptomatology, and yield loss. Application of a fungicide (e.g. a strobilurin fungicide such as pyraclostrobin or picoxystrobin) together with glyphosate, is also contemplated. Soybean diseases that may be treated in this manner include Soybean Sudden Death, Brown Stem Rot, Stem Canker, and Charcoal Rot, among others.

Abstract: A method of promoting a desired oral microbiota to treat an oral and/or sinus infection condition in a subject in need of such treatment including providing a preformulated prebiotic edible composition including an amino acid containing ingredient comprising individual molecules of L-arginine; substantially removing a biofilm from surfaces within an oral cavity by heating the inside of the oral cavity to a temperature of about 100 deg F. to about 130 deg F.; wherein following removal of the biofilm, the composition is provided contained and at least partially dissolved within an oral cavity of the subject for a period of at least from about 30 seconds to about an hour on a daily basis of at least two consecutive days to promote an increased concentration of selected oral microbiota, the selected microbiota comprising Veillonella and Streptococcus, thereby treating the oral and/or sinus infection condition.

Abstract: An ignition module, ignition system, and method for providing and generating at least two sparks in each cylinder in a single combustion cycle for RPMs over 3,000. The ignition module, system, and method is configured to detect misfires in a spark plug and take measures to alert a user of such misfires and cause an additional spark to occur prior to the completion of the cylinder's power stroke during its combustion cycle. The ignition module, system and method provides for continuous spark at high RPMs and is configured to reduce and/or eliminate engine misfire in excess of about 3,000 RPM for four stroke engines and up to 30,000 RPM for two stroke engines.

Abstract: An ignition system for an internal combustion engine has a power source, a transformer having a first primary winding and a second primary winding and a secondary winding, a connector extending from the secondary winding so as to connect with a terminal of a spark plug, and a multi-strike circuit cooperative with the electronic spark timing circuit so as to fire the transformer with multiple strikes between the falling edge and the rising edge. A booster circuit is cooperative at the electronic spark timing circuit so as to collect and store energy from the power source while the electronic spark timing circuit fires the transformer. A delay circuit fires the transformer at a time subsequent to the falling edge and before the rising edge.

Abstract: The present invention discloses a device having communication with small gasoline engine igniter, comprising an igniter, a flameout switch and a communication device, and both the flameout switch and the communication device are connected to an igniter flameout port and an iron core of a reference ground. The unique voltage conversion circuit herein makes the signals at MUC sampling port more close to the required theoretical value, to ensure more stable and reliable communications. The design of key input and data display enables the communication device to be used alone without additional computers or other additional equipments, simple and convenient. On the basis of above igniter program, very simple circuit at extremely low costs is added, together with the MCU control program, the invention can have a single-wire bidirectional communication with an external device, so as to achieve operations of controlling MCU internal data of the igniter.

Abstract: An ignition apparatus for an internal combustion engine which is capable of having a high-degree of ignition performance and being reduced in size is provided. The ignition apparatus includes the spark plug mounted in an end of the plug hole formed in the internal combustion engine, the first ignition coil, the second ignition coil, and the control portion. The first ignition coil includes the primary coil and the secondary coil and has a secondary side electrically connected to the spark plug. The second ignition coil includes the primary coil and the secondary coil and is connected to the spark plug in parallel to the first ignition coil. The control portion controls energization of the first ignition coil and the second ignition coil. The secondary voltage developed at the second ignition coil is lower in level than that developed at the first ignition coil.

Abstract: Disclosed are particles comprising pectin and gelatin. The particles may be useful for preparing any of a variety products such as, for example, soft pharmaceutical capsules, hard pharmaceutical capsules, and foodstuffs. Also disclosed are methods for preparing the particles, the method comprising: (a) dissolving pectin in an aqueous solution to produce an aqueous solution of dissolved pectin; (b) mixing the aqueous solution of dissolved pectin with liquid gelatin to produce a gelatin/pectin mixture; (c) drying the gelatin/pectin mixture; and (d) milling the gelatin/pectin mixture to produce the plurality of particles.

Abstract: A vehicle electrical system includes a first system branch with a first nominal voltage U1, a second system branch with a second nominal voltage U2, at least one DC/DC converter configured to transmit energy between the first and second system branches, a first actuating unit to actuate the DC/DC converter(s), a first detection unit to detect an instantaneous voltage Uact,1 of the first system branch, and a comparison unit to compare the detected instantaneous voltage Uact,1 to a first upper voltage threshold value Uo,1 and to a first lower voltage threshold value Uu,1, wherein Uu,1<U1<Uo,1. The first actuating unit actuates the DC/DC converter(s) such that energy is transmitted from the first system branch to the second system branch if Uact,1>Uo,1, and such that energy is transmitted from the second system branch to the first system branch if Uact,1<Uu,1.

Abstract: An ignition device includes a spark plug, a measurement value detector, an electrical breakdown determiner, an AC voltage applying section, and a first changing section. The measurement value detector includes primary and secondary coils, and detects at least one measurement value among an ignition coil, a primary current, a primary voltage, a secondary current, and a secondary voltage. The electrical breakdown determiner determines whether a discharge has become an electrical breakdown state based on the measurement value. The AC voltage applying section applies an AC voltage of a first predetermined frequency that causes voltage resonance to the primary coil. The first changing section changes the frequency of the AC voltage to a second predetermined frequency that can maintain the electrical breakdown state and is lower in frequency than the first predetermined frequency when it is determined that the discharge has become the electrical breakdown state.

Abstract: A method for energy ignition management of a spark-ignition engine includes receiving, by a controller, at least one ignition energy characteristic to affect control of at least one combustion cylinder. The method further includes controlling the at least one combustion cylinder via the controller. Controlling the at least one combustion cylinder via the controller includes adjusting the at least one ignition energy characteristic in response to at least one operating condition of the engine. The at least one ignition energy characteristic is a magnitude of one of a current or voltage of spark energy.

Abstract: Disclosed herein are methods of controlling insect pests, in particular Leptinotarsa spp. which infest crop plants, and methods of providing plants resistant to such pests. Also disclosed are polynucleotides and recombinant DNA molecules and constructs useful in such methods, insecticidal compositions such as topical sprays containing insecticidal double-stranded RNAs, and solanaceous plants with improved resistance to infestation by Leptinotarsa spp. Further disclosed are methods of selecting target genes for RNAi-mediated silencing and control of Leptinotarsa spp.

Abstract: The subject matter of this invention is a composition and method of making a water-dispersible, stabilizing colloidal microcrystalline cellulose:xarboxymethylcellulose composition. The method of making the composition does not require a salt solution as an anti-slip agent.

Abstract: Fatty acid-based, pre-cure-derived biomaterials, methods of making the biomaterials, and methods of using them as drug delivery carriers are described. The fatty acid-derived biomaterials can be utilized alone or in combination with a medical device for the release and local delivery of one or more therapeutic agents. Methods of forming and tailoring the properties of said biomaterials and methods of using said biomaterials for treating injury in a mammal are also provided.

Abstract: An igniter that includes switch element and switch control device for controlling the switch element depending on ignition signal. The switch control device includes a determination stage that compares voltage associated with the ignition signal with a predetermined voltage to generate a determination signal, a driving stage that controls ON/OFF operations of the switch element depending on the determination signal, a timer circuit that asserts a conduction protection signal when state where the determination signal becomes an assert level corresponding to an ON operation of the switch element continues for predetermined time, a time-varying voltage generating circuit that generates time-varying voltage over time in response to the assertion of the conduction protection signal, and an amplifier that changes the voltage of a control terminal of the switch element such that detection voltage associated with coil current flowing in the switch element is close to the time-varying voltage.

Abstract: An ignition system for an internal combustion engine has a power source, a transformer having first and second primary windings and a secondary winding, a connector extending from the secondary winding and adapted so as to connect with a terminal of the spark plug of the internal combustion engine, and electronic spark timing circuit cooperative with the transformer so as to activate and deactivate voltage to the first and second primary windings. The first and second primary windings are connected to the power source such that the transformer produces an alternating voltage output from the secondary winding of between 1 kHz and 100 kHz and a voltage of at least 20 kV. A forced push-pull inverter is cooperative with the electronic spark timing circuit so as to fix a frequency of voltage to the first and second primary windings.

Abstract: An ignition module, ignition system, and method for providing and generating at least two sparks in each cylinder in a single combustion cycle for RPMs over 3,000. The ignition module, system, and method is configured to detect misfires in a spark plug and take measures to alert a user of such misfires and cause an additional spark to occur prior to the completion of the cylinder's power stroke during its combustion cycle. The ignition module, system and method provides for continuous spark at high RPMs and is configured to reduce and/or eliminate engine misfire in excess of about 3,000 RPM for four stroke engines and up to 30,000 RPM for two stroke engines.

Abstract: The present disclosure relates to methods of increasing the extraction of an apoplast-targeted recombinant protein in a plant tissue and to methods of increasing the purity of an apoplast-targeted recombinant protein recovered from a plant tissue. The methods involve contacting plant tissue with a rinse fluid on a plurality of occasions to release recombinant protein from the apoplast into the rinse fluid to create an apoplast wash fluid. The resulting content of the recombinant protein in the apoplast wash fluid is higher than the content of the recombinant protein in the apoplast wash fluid from comparable plant tissue contacted with rinse fluid on a single occasion.

Abstract: A dual coil ignition system is provided. The dual coil ignition system includes a first inductive ignition coil including a first primary winding and a first secondary winding, and a second inductive ignition coil including a second primary winding and a second secondary winding, the second secondary winding connected in series to the first secondary winding. The dual coil ignition system further includes a diode network including a first diode and a second diode connected between the first secondary winding and the second secondary winding.

Abstract: The capacitive welder includes a charging circuit, a welding transformer, a capacitor, a discharging switching element connected in parallel with a primary winding of the welding transformer and the capacitor that are connected in series, a bypass switching element connected in parallel with the primary winding, welding electrodes connected in parallel with a secondary winding of the welding transformer, and a control circuit for bringing the welding transformer into a reset allowing state by allowing a reset current to flow in the primary winding using the input power introduced through the charging circuit without supplying an ON signal to the bypass switching element, and then supplying the ON signal to the bypass switching element such that the capacitor is charged through the bypass switching element by the input power introduced through the charging circuit.

Abstract: An ignition control device for an internal combustion engine, which controls the number of times of ignition operation such that it becomes neither too large nor too small, according to a flowing state of a mixture in a cylinder. In the ignition control device, a target ignition timing is used as an in-cylinder flow parameter indicative of the strength of a tumble flow generated in a cylinder. When the target ignition timing is more advanced than a predetermined reference position, it is determined that the tumble flow is strong, and multiple ignition control is executed by setting the number of times of ignition to a plurality of times, whereas when the former is more retarded than the latter, it is determined that the tumble flow is not strong, and normal ignition control is executed by setting the number of times of ignition to only once.

Abstract: A method of modulating the expression of at least one trait in a plant, the method comprising the step of modulating the expression of at least one polypeptide by the plant, wherein the polypeptide is selected from the group consisting of: i) a polypeptide which comprises the amino acid sequence according to SEQ ID NO:1; ii) a polypeptide which comprises an amino acid sequence which is selected from the group consisting of any one or more of from amino acid 1 to amino acid 7, from amino acid 9 to amino acid 230, from amino acid 1 to amino acid 58, from amino acid 77 to amino acid 485, from amino acid 59 to amino acid 76, from amino acid 150 to amino acid 191, from amino acid 231 to amino acid 405, and from amino acid 406 to amino acid 438 of SEQ ID NO: 1, or at equivalent positions in a homologue thereof, and which is capable of modulating cytokinin signaling in the plant; iii) a polypeptide which comprises an amino acid sequence with at least 70% sequence identity to the amino acid sequence according to SEQ

Abstract: An approach for supplying spark to a spark ignited engine having activated and deactivated engine cylinders is disclosed. In one example, the approach increases ignition energy supplied to spark plugs of deactivated cylinders to reduce the possibility of spark plug fouling for the deactivated cylinders while continuing to supply spark to activated cylinders.

Abstract: This disclosure provides methods and transgenic plants for improved production of renewable biofuels and other plant-derived biomaterials by altering the expression and/or activity of Gene Y, an O-acetyltransferase. This disclosure also provides expression vectors containing a nucleic acid (Gene Y) which encodes the polypeptide of SEQ ID NO: 1 and is operably linked to a heterologous promoter.

Abstract: Compositions and methods for conferring lepidoptericidal activity to bacteria, plants, plant cells, tissues and seeds are provided. Compositions comprising a coding sequence for the Axmi222z toxin polypeptide are provided. The Axmi 222z coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in plants and bacteria. Compositions also comprise transformed bacteria, plants, plant cells, tissues, and seeds. In particular, isolated Axmi222z toxin nucleic acid molecules are provided. Additionally, amino acid sequences corresponding to the Axmi222z polynucleotides are encompassed, and antibodies specifically binding to those amino acid sequences. In particular, the present invention provides for isolated nucleic acid molecules comprising nucleotide sequences encoding the amino acid sequence shown in SEQ ID NO:24-26, or the nucleotide sequence set forth in SEQ ID NO:2, 7, 12, and 17, as well as variants and fragments thereof.

Abstract: Compositions and methods for conferring lepidoptericidal activity to bacteria, plants, plant cells, tissues and seeds are provided. Compositions comprising a coding sequence for the Axmi226 toxin polypeptide are provided. The Axmi226 coding sequences can be used in DNA constructs or expression cassettes for transformation and expression in plants and bacteria. Compositions also comprise transformed bacteria, plants, plant cells, tissues, and seeds. In particular, isolated Axmi226 toxin nucleic acid molecules are provided. Additionally, amino acid sequences corresponding to the Axmi226 polynucleotides are encompassed, and antibodies specifically binding to those amino acid sequences. In particular, the present invention provides for isolated nucleic acid molecules comprising nucleotide sequences encoding the amino acid sequence shown in SEQ ID NO:19 and 20, or the nucleotide sequence set forth in SEQ ID NO:4, as well as variants and fragments thereof.

Abstract: The invention relates to a method for igniting a fuel-air mixture in an internal combustion engine. An electric transformer excites an oscillating circuit connected to a secondary winding of the transformer. A capacitor is formed by an ignition electrode together with the wall of a combustion chamber through which it extends. The excitation of the oscillating circuit is controlled by generating a corona discharge igniting the fuel-air mixture. Before each ignition time the voltage applied to a primary winding of the transformer is incrementally increased, and the intensity of the current flowing in the primary winding is measured repeatedly at the same primary voltage. The variation of the values of the related primary current is determined, and the incremental increase in the primary voltage is aborted at a value thereof at which the variation of the primary current intensity reaches or exceeds a predetermined limit.

Abstract: A high-voltage generator device, including an inductive-capacitive resonator capable of producing a high voltage, a mechanism generating a high-frequency control pulse train, a voltage source, a capacitor, and a voltage generator including a switching transistor, the control electrode of which is connected to the output of the mechanism generating the high-frequency control pulse train, the source of the switching transistor being connect to ground, and the drain of the switching transistor being capable of delivering a voltage pulse train to the inductive-capacitive resonator in response to the control pulse train received on the control electrode of the switching transistor. The drain of the switching transistor is connected to the inductive-capacitive resonator via an isolating transformer, the isolating transformer being connected in parallel with a capacitor, the isolating transformer also being connected to the voltage source.

Abstract: The invention relates to a method for igniting a fuel-air mixture in an internal combustion engine. An electric transformer excites an oscillating circuit connected to a secondary winding of the transformer. A capacitor is formed by an ignition electrode together with the wall of a combustion chamber through which it extends. The excitation of the oscillating circuit is controlled by generating a corona discharge igniting the fuel-air mixture. Before each ignition time the voltage applied to a primary winding of the transformer is incrementally increased, and the intensity of the current flowing in the primary winding is measured repeatedly at the same primary voltage. The variation of the values of the related primary current is determined, and the incremental increase in the primary voltage is aborted at a value thereof at which the variation of the primary current intensity reaches or exceeds a predetermined limit.

Abstract: An ignition system (10) comprises a spark plug (12) having a first end (14) defining a spark gap (16) between a first electrode (18) and a second electrode (20). A transformer (46) comprising a primary winding 44 and a secondary winding (50) also forms part of the system. The secondary winding is connected in a secondary circuit to the first electrode 18 and the secondary winding has a resistance of less than 1 k? and an inductance of less than 0.25 H. A drive circuit (26) is connected to the primary winding.

Abstract: Method for igniting a fuel/air mixture in a cyclically operating internal combustion engine comprising combustion chambers which are delimited by walls that are at ground potential, using an ignition device comprising an ignition electrode provided in each combustion chamber, in which method, via an electrical DC/AC converter, an electric oscillating circuit is excited, which is connected to the secondary side of the DC/AC converter, and in which the ignition electrode, which is guided through one of the walls delimiting the combustion chamber in a manner in which it is electrically insulated from said walls by an insulator and extends into the combustion chamber, constitutes a capacitance in cooperation with the walls of the combustion chamber that are at ground potential, and in which the excitation of the oscillating circuit is controlled so a corona discharge igniting the fuel/air mixture is created in each combustion chamber at the ignition electrode.

Abstract: There is obtained an ignition apparatus, for an internal combustion engine, that can make a predetermined output current flow in a stable manner so that the combustion state of the internal combustion engine can always be maintained in a good condition, even in the case where the voltage of the power source connected with the energy storing coil fluctuates.

Abstract: There is obtained an ignition apparatus, for an internal combustion engine, that can make a predetermined output current flow in a stable manner so that the combustion state of the internal combustion engine can always be maintained in a good condition, even in the case where the voltage of the power source connected with the energy storing coil fluctuates.

Abstract: In a multiple discharge ignition control apparatus, a battery, an energy storage coil and a first IGBT are connected in series. Further, the energy storage coil, a diode, a primary coil and a second IGBT are connected in series. The energy storage coil is connected with a capacitor through the diode, and a secondary coil is connected with a spark plug and a resistor for current detection. An ignition control circuit switches the IGBTs between ON and OFF each time the secondary current detected by the resistor reaches a positive or negative discharge holding current in multiple discharge operation. A booster circuit is provided in addition to the energy storage coil and its output is feedback-controlled.

Abstract: A capacitive discharge ignition system in which a controllable switch is positioned between a storage capacitor and the primary winding of an ignition transformer. The switch is controlled to create a train of pulses to the primary winding timed to reinforce the ringing action of the ignition transformer.

Abstract: An ignition circuit comprising storage means to store electrical energy, first and second switching devices, means for charging the storage means and means for switching each of the switching devices such that charge on the storage means is transferred to cause firing of an igniter in such a way that the voltage across each switching device is only a fraction of the total applied to the igniter. In this way, standard solid state switches may be employed rather than the more costly devices required to handle the full voltage to be applied to the igniter. More than one such ignition circuit may be combined to provide a scanning multiple spark system with a plurality of igniters, each in conjunction with a pair of switching devices and means for switching each of the switching devices as described above.

Abstract: An ignition system for an engine includes an exciter circuit for use with an igniter, the exciter circuit having a step-up transformer the utilizes a relatively low voltage in its primary to produce a high voltage pulse that is applied to the igniter to create ionization and breakdown. The system also utilizes a low voltage high energy circuit to provide high current energy to the igniter after initial breakdown and during the plasma arc phase. The high energy circuit is decoupled from the step-up transformer so that high current is conducted through a bypass diode rather than through the transformer.

Abstract: A capacitor discharge ignition (CDI) system is capable of generating intense continuous electrical discharge at a spark gap for a desired duration and may include a second controllable power switching circuit with its input terminal connected to an output terminal of a high voltage DC source device. An output terminal of the second controllable power switching circuit is connected to an input terminal of a first power switching circuit. The second controllable power switching circuit may also have a control terminal connected to an output of a controller. The first controllable power switching circuit may be used for discharging a discharge capacitor, and the second controllable power switching circuit may cause charging of the discharge capacitor. As such, an ignition current through an ignition coil of the system is enabled for any desired number of cycles during both the charge and discharge cycles of the discharge capacitor.

Abstract: A capacitor discharge type internal combustion engine ignition device is provided; wherein a capacitor is charged by a positive half-wave output voltage of an exciter coil; wherein an ignition is performed by giving an ignition signal to a thyristor from an ignition control portion for steady state; wherein a pulse signal obtained by waveform-shaping a negative half-wave output voltage of the exciter coil or the signal generated by a signal generator is given to the thyristor as the ignition signal through an ignition control portion for extremely low speed state so as to perform an ignition at a starting time and at an extremely low speed state; and wherein a power supply circuit which gives a power supply voltage to the ignition control portion for steady state and the power supply circuit which gives the power supply voltage to the ignition control portion for extremely low speed state are provided separately whereby the ignition signal for the starting time and the extremely low speed state can be generat

Abstract: A supercharger type compressor driven by an ultra high speed electric motor, having high efficiency and providing true air boost on demand. Magnetically loaded composite (MLC) rotor technology is used in the design and construction of the electric motor for driving a supercharger.

Abstract: A capacitor discharge ignition (CDI) system is capable of generating intense continuous electrical discharge at a spark gap for a desired duration and may include a second controllable power switching circuit with its input terminal connected to an output terminal of a high voltage DC source device. An output terminal of the second controllable power switching circuit is connected to an input terminal of a first power switching circuit. The second controllable power switching circuit may also have a control terminal connected to an output of a controller. The first controllable power switching circuit may be used for discharging a discharge capacitor, and the second controllable power switching circuit may cause charging of the discharge capacitor. As such, an ignition current through an ignition coil of the system is enabled for any desired number of cycles during both the charge and discharge cycles of the discharge capacitor.

Abstract: A capacitor discharge type internal combustion engine ignition device is provided; wherein a capacitor is charged by a positive half-wave output voltage of an exciter coil; wherein an ignition is performed by giving an ignition signal to a thyristor from an ignition control portion for steady state; wherein a pulse signal obtained by waveform-shaping a negative half-wave output voltage of the exciter coil or the signal generated by a signal generator is given to the thyristor as the ignition signal through an ignition control portion for extremely low speed state so as to perform an ignition at a starting time and at an extremely low speed state; and wherein a power supply circuit which gives a power supply voltage to the ignition control portion for steady state and the power supply circuit which gives the power supply voltage to the ignition control portion for extremely low speed state are provided separately whereby the ignition signal for the starting time and the extremely low speed state can be generat

Abstract: An electric ignition device for an internal combustion engine having a primary and a secondary circuit coupled together by a transformer. The secondary circuit includes a spark gap. The primary circuit includes a capacitor that can be discharged. The voltage discharged by the capacitor is coupled by the transformer to the secondary circuit where it produces an ignition spark across the spark gap. The primary circuit is a resonant circuit that is repeatedly excited keeping the ignition spark burning as an arc. Current or voltage in the secondary circuit are detected to control the energy introduced into the spark gap.

Abstract: Ignition system componentry which may be coupled or stacked with a conventional high energy ignition system with an ignition storage capacitor coupled to the ignition coil including an electronic controller provided as responsive to the current flow through a transmission ignition coil. A discharge switch is connected in a circuity for discharging the storage capacitor into the ignition coil, the discharge switch being coupled to the electronic controller for controlling the charging and the discharging of the storage capacitor in cooperation with the conventional HEI ignition system using the interruption of the current to the ignition transformer in the conventional system for generating a trigger signal for the capacitive discharge assembly in cooperation with the HEI system upon which it is stacked for generating high energy spark producing potentials optimized for the internal combustion engine.