Abstract: The embodiments of the present circuit and method disclose a light-emitting diode (LED) driver system. The LED driver system may comprise an isolated converter and a DC/DC converter. The isolated converter may be coupled to a first input signal, and may provide a LED current and a bus voltage. The isolated converter may be configured to regulate the LED current and the bus voltage separately in accordance with a dimming signal. The DC/DC converter may comprise an input coupled to the bus voltage.

Abstract: A wireless power supply system for lighting includes: a power transmission unit including a power transmission coil; and a power reception unit including a power reception coil. The power transmission coil generates an AC magnetic field in response to a supplied AC power. The power reception coil receives an electric power from the power transmission unit through an electromagnetic induction due to the AC magnetic field generated by the power transmission coil. The power reception unit further includes a power circuit and a receive-side control section. The power circuit receives an output power from the power reception coil and to perform Buck-Boost operation so as to output a predetermined electric power to a lighting load. The receive-side control section controls the Buck-Boost operation of the power circuit. The power circuit is configured to be capable of boosting and stepping-down of the output power from said power reception coil.

Abstract: Disclosed is an electromagnetic coupling multi-output control circuit having a detection unit, a switching unit and a coupling unit, and the coupling unit is coupled to a side of a transformer of a power driving device to sense and produce a second driving voltage, such that the transformer has a multi-output function. The switching unit is provided for receiving and outputting the second driving voltage to a second driving load, and the detection unit is provided for detecting the second driving voltage to produce a detection value, so that the switching unit analyzes the detection value and switches outputting a frequency of the second driving voltage to stabilize the voltage value of the second driving voltage, so as to flexibly increase the number of output voltages of the power driving device while lowering the cost and expand the scope of applicability.

Abstract: A lamp set includes a control device and a first lighting device. The control device includes an energy-generating unit for providing an energy distribution. The first lighting device includes a pre-processing unit, a first lighting element, and a controller. The controller is coupled to the pre-processing unit and the first lighting element. The pre-processing unit is used to sense the energy distribution or to receive information included in the energy distribution thus to allow the controller to control luminance of the first lighting element according to the energy distribution.

Abstract: [Problems to be Solved] To solve a problem that introducing electric appliances such as a transmitter for transmitting micro radio waves such as Bluetooth and RFID, a transmitter for transmitting infrared rays, and a camera for capturing an image into an in-house requires a high cost. [Means to Solve the Problems] Energy is acquired from a magnetic field that is generated by a current for turning on a fluorescent lamp of a lighting equipment so as to drive the electric appliances such as a transmitter for transmitting micro radio waves such as Bluetooth and RFID, a transmitter for transmitting infrared rays, and a camera for capturing an image.

Abstract: An exemplary light emitting apparatus comprises an illumination source and a secondary inductor. Exemplary illumination sources include electroluminescent panels or displays and light emitting diodes. The emitting apparatus is typically attached to or integrated with a display object, such as a merchandise package or container, and receives power through the secondary inductor, generated by a voltage or current in a primary inductor of a power regulator apparatus. A support structure, such as a point of purchase display, typically contains or supports one or more power regulators and display objects. The illumination source is adapted to emit visible light when the power regulator is in an on state and when the secondary inductor is within a predetermined distance of the primary inductor. In exemplary embodiments, the first and second inductors are substantially planar, and the illumination source may also be directly coupled to the secondary inductor.

Abstract: An exemplary system comprises a power regulator and an emitting apparatus. The emitting apparatus is typically attached to or integrated with a display object, such as a merchandise package or container. A support structure, such as a point of purchase display, typically contains or supports one or more power regulators and display objects. The power regulator comprises a controller and a primary inductor, and the controller is adapted to provide a voltage or current to the primary inductor to generate a first primary inductor voltage. The emitting apparatus comprises an illumination source and a secondary inductor coupled to the illumination source. The illumination source is adapted to emit visible light when the power regulator is in an on state and when the secondary inductor is within a predetermined distance of the primary inductor. In exemplary embodiments, the first and second inductors are substantially planar.

Abstract: An ignition system for use in internal combustion engines, in which there is provided a plurality of charging means, at least one of the plurality of charging means being adapted to provide charge to a plurality of charge storage means, in a predetermined manner, the charge storage means being arranged to collectively activate a spark means.

Abstract: An improved capacitive discharge ignition apparatus provides spark advance with engine speed. The ignition apparatus includes at least one trigger circuit including a trigger coil preferably contained in a common housing with other circuit elements. In this case, an auxiliary coil may be provided to cancel certain pulses in the trigger coil output that could otherwise interfere with desired operation. In some embodiments, a second trigger circuit is provided to derive a triggering signal from the primary coil of the ignition's step-up transformer. A triggering signal of appropriate magnitude received from either trigger circuit will cause discharge of an energy storage element through the primary coil.

Abstract: A method for controlling the trigger sequence in a flywheel magneto system including a magnet system for inducing a trigger pulse for a gate trigger current switch. When the trigger pulse is below a preset level N, the ignition system is triggered based on a voltage difference in the trigger pulse following the trigger pulse peak. As the rotational speed and amplitude of the trigger pulse increase, the triggering is advanced. When the trigger pulse exceeds the preset level N, the ignition system is triggered when the trigger pulse exceeds N. As the rotational speed and amplitude of the trigger pulse increases, the triggering is further advanced. A voltage threshold component is connected in series with the gate trigger current switch to avoid triggering interference.

Abstract: A dimming control circuit provides power from an ac source to a compact fluorescent lamp. The circuit generally includes a resonant half-bridge inverter driven by a pulse-duration-modulated voltage, for providing a high-frequency ac voltage between the lamp electrodes. A combination inductive and capacitive snubber circuit reduces switching losses in the inverter and increases the efficiency of the dimming circuit. A low-voltage transformer connected across the resonant portion of the inverter provides voltage to heat the lamp filaments. The filament voltage is substantially constant over a range of pulse-durations providing a dimming range from about 100% to 1% of full light output. A power supply circuit having a power factor of about 0.95 provides both high-voltage and low-voltage dc power to the dimming circuit with minimal losses. A shutdown circuit is provided to shut off power to the lamp if the dimming circuit is miswired or a ground fault occurs.

Abstract: The present invention discloses a multiple spark transistor ignition circuit which is able to provide negligible retardation of ignition time, and/or prevent ignition with reverse rotation and/or provide an additional advanced spark and/or govern maximum engine speed and/or progressively advance the moment of ignition with increasing engine speed. The basic circuit comprises an ignition circuit of the type disclosed in U.S. Pat. No. 4,163,437 (Notaras) with a diode interposed between the primary winding and the remainder of the circuit. Circuits having a single primary winding and dual remainders or dual primary windings and single remainders are also disclosed. A governor circuit having a control transistor, a further potential divider and a control capacitor, is also disclosed.

Abstract: To suppress negative half-waves derived from a magneto armature and not used for ignition without use of external damping networks, the semiconductor switch controlling current flow, and abrupt turn-off to initiate an ignition event, is formed as a monolithic semiconductor element, and the inherent inverse diode of the monolithic element is utilized to pass the reverse voltage half-waves. To prevent damage to the inherent diodes due to over-voltage or current overloading, a damping resistance element is connected in series with the main current carrying path of the monolithic circuit elements, preferably a Darlington transistor, which, preferably, is a semiconductor resistor having a preferred current passage characteristic in the same direction as the current flow through the Darlington transistor, for example a Zener diode, a resistor, or a series of diodes polarized like the inverse diode, bridged by a diode conducting in the same direction as the Darlington transistor, or the like.

Abstract: In a magnet-flywheel, capacitive-discharge ignition unit, for internal combustion engines, besides a high-impedance winding intended for feeding the capacitor connected to the primary winding of the ignition coil, also a low-impedence winding is provided, which is connected to the primary winding, and has the task of prolonging the ignition discharge.

Abstract: Disclosed herein is a voltage regulated magneto powered capacitive discharge ignition system including a charge capacitor, a magneto including a charge coil, and a circuit including a rectifier having input terminals respectively connected to the charge coil and having output terminals respectively connected to 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 silicon bilateral voltage triggered switch having first and second anodes respectively connected to opposite end terminals of the charge coil. In response to a voltage developed on the charge coil exceeding a predetermined value, the silicon bilateral voltage triggered switch is rendered conductive so that the charge coil is shunted by the silicon bilateral voltage triggered switch so that further charging of the charge capacitor is prevented.

Abstract: An apparatus for the generation of ignition power and its circuits is composed of two transformers and one discharging capacitor. The triggering signal is taken from the alternating current supply voltage. The stored charge is discharged through a primary winding of a step-up transformer. The secondary voltage is stepped up to several ten thousand peak volts which is enough to make an ignition spark through a large air gap. The first half wave of alternating current power charges the capacitor and the second half wave triggers an SCR to discharge the capacitor. The charging and discharging are completed during a single period of a line power wave.

Abstract: Apparatus in magneto ignition systems for providing time separated sequences for charging and triggering in cophased charging and triggering voltage sequences, including inhibition of the ignition sequence in such apparatus. The ignition system includes a triac as a control member, a rectifier being included in the control circuit of the triac, the rectifier having its polarity disposed such that time-separated charging and triggering intervals are obtained. Across the rectifier there is connected a short-circulating circuit or providing triggering control voltages to the triac, even during the charging interval, thus preventing charging, which results in inhibition of the ignition sequence.

Abstract: The capacitor discharge ignition system has a capacitor connected to and charged by a charging coil through a diode. The primary of an ignition transformer is connected to the capacitor and a trigger device controls discharge of the capacitor to ground through said primary coil. The anode of a second diode is connected between the charging coil and the first diode and a shutdown switch is connected in series between the cathode of the second diode and ground.

Abstract: To suppress negative half-waves derived from a magneto armature and not used for ignition without use of external damping networks, the semiconductor switch controlling current flow, and abrupt turn-off to initiate an ignition event, is formed as a monolithic semiconductor element, and the inherent inverse diode of the monolithic element is utilized to pass the reverse voltage half-waves. To prevent damage to the inherent diodes due to over-voltage or current overloading, a damping resistance element is connected in series with the main current carrying path of the monolithic circuit elements, preferably a Darlington transistor, which, preferably, is a semiconductor resistor having a preferred current passage characteristic in the same direction as the current flow through the Darlington transistor, for example a Zener diode, a resistor, or a series of diodes polarized like the inverse diode, bridged by a diode conducting in the same direction as the Darlington transistor, or the like.

Abstract: An ignition system of the contactless interrupt type for an internal combustion engine is disclosed with a control circuit including a pair of solid state semiconductor devices with one connected to the other in a controlling relation. The ignition system has a high voltage transformer with a secondary winding coupled to a spark plug and a primary winding shunted by the controlled one of the pair of semiconductors. A current flow is induced in the primary winding and then interrupted near its maximum value by rendering both of the semiconductor devices nonconducting. The controlling semiconductor may be a gate controlled switch or so-called gate turn-off device while the controlled semiconductor may be a power transistor.

Abstract: In an ignition system for internal combustion engines having a magneto generator for charging a capacitor and a thyristor for discharging the capacitor through an ignition coil upon receiving an ignition signal, an auxiliary capacitor and an associated transformer are provided as a source of the ignition signal. The auxiliary capacitor is charged through the transformer by each half-cycle of the magneto generator output of the opposite polarity with respect to the charging half-cycle of the capacitor. The auxiliary capacitor is discharged through the gate-cathode path of the thyristor under control of an auxiliary switching element to which a timing signal generator provides a timing signal at a proper ignition time.

Abstract: An ignition system for internal combustion engines in which a capacitor is charged at each one-polarity half-cycle of the output of a magneto generator and then the capacitor is discharged through a thyristor and a primary coil of an ignition coil when the thyristor is turned on. To turn on the thyristor, a gate-cathode current is supplied through a semiconductor switching element from an auxiliary capacitor which is charged by a timing generator which generates an output prior to only a predetermined ignition time. Although the semiconductor switching element is turned on by an ignition signal generating means, for example, a transformer, when the transformer produces an ignition signal at each the other-polarity half-cycle of the magneto generator output, the gate-cathode current is supplied to the thyristor only when the auxiliary capacitor has been charged by the timing generator.

Abstract: An ignition system for an internal combustion engine comprises a primary current control switch provided in parallel with an exciter coil and the primary of the ignition coil, energized by an exciter coil producing an AC voltage in time with rotation of the engine crank shaft. The primary current control switch is made conductive in advance of the ignition angle to permit a current to flow therethrough, and is made nonconductive at the ignition angle to cause sudden increase in the primary current. The ignition system is characterized in that the core of the ignition coil has a magnetic retentivity and by comprising resistor means for providing a path for a current through the primary in the opposite direction to the current which flows through the primary at the ignition angle.

Abstract: The present invention discloses a system which utilizes the storage action of capacitors and the characteristic of the turn-off operation due to a potential difference between the base and emitter of a transistor, and immediately after a primary short-circuit current flowing through a primary winding of an ignition coil has reached a maximum, that is, immediately after a forward induced voltage in the primary winding has reached a maximum, the primary short-circuit current is cut off in accordance with information in which the forward induced voltage in the primary winding is at its maximum to always effect the ignition operation immediately after the primary short-circuit current is at its maximum.

Abstract: A current interruption type ignition system for an internal combustion engine comprises an ignition coil including a primary coil portion and a secondary coil portion; an exciter inducing an AC voltage in synchronism with rotation of the engine to be supplied to the primary coil portion of the ignition coil; a first semiconductor switch provided in parallel to the primary coil portion to conduct a current from the exciter therethrough; a second semiconductor switch provided on a controlled terminal of the first semiconductor switch so that the second semiconductor switch, upon conduction, causes the first semiconductor switch to be turned off so as to abruptly conduct a primary current into the primary coil portion of the ignition coil; and a signal source generating an ignition signal at the ignition position of the engine.

Abstract: A capacitor discharge ignition system is provided with an ignition timing stabilization arrangement to achieve substantially constant ignition timing characteristics over a wide range of engine speeds. The capacitor discharge ignition system is positioned adjacent a rotating permanent magnet that is rotated over a path in synchronism with the operation of an engine to be controlled.The capacitor discharge ignition system includes a stator core having disposed thereon an ignition coil and a control coil assembly. The control coil assembly includes a control winding and a timing stabilization winding. As a first pole of the magnet passes the stator core, a voltage and current of a first polarity is induced in the control winding to charge a storage capacitor.

Abstract: An ignition system for a multicylinder engine comprising a magneto having an igniting exciter coil to induce an AC voltage in synchronism with rotation of the engine; ignition coils having secondary coil portions respectively connected to ignition plugs for cylinders of the engine, to supply a high voltage to the respective ignition plugs; and a primary current controlling semiconductor switch connected to the igniting exciter coil in parallel therewith to be turned on in advance of respective igniting positions of the cylinders so that a current flows through the semiconductor switch.

Abstract: To provide for ignition advance as the speed of the engine increases, a frequency-dependent circuit formed by a series RC circuit is connected in parallel with the control path of a switch in series with the primary of the magneto ignition coil so that the switch will be controlled to cut off or to open earlier as the speed increases.

Abstract: An electronic magneto ignition for internal combustion engines has a permanent magnet mounted on the engine fly wheel and rotating therewith. A magnetic field coil has a primary winding and a secondary winding in which ignition current and ignition voltage, respectively, are produced during the passage of the permanent magnet. A switching transistor is connected in parallel with the primary winding and in parallel with a diode poled opposite to the emitter-collector path of the transistor. An electronic control circuit blocks the switching transistor at the desired ignition time so that the primary circuit is interrupted and the high voltage for the combustion of the fuel is produced in the secondary winding. In the electronic control circuit, a parallel circuit consisting of a first control coil, which has a resistor in series therewith, and a thyristor is connected from the base to the emitter of the switching transistor.

Abstract: The present invention discloses an ignition system for internal combustion engines. The ignition system is particularly applicable to such engines including a magneto.The ignition system includes a semi-conductor ignition circuit in which a first transistor has its collector-emitter conduction path connected in series with the primary winding of an ignition coil assembly. A resistor is connected between base and collector of the first transistor to permit it to conduct. A control circuit connected between the base of the first transistor and the primary winding, turns the first trnasistor off when it is desired to interrupt the primary winding current.The ignition system also includes a magneto ignition coil assembly which has a low inductance primary winding having a relatively low number of turns. The coil assemblies of the present invention are generally unsuitable for use with conventional mechanical breaker points.

Abstract: An ignition circuit for use in an internal combustion engine comprises a magnet generator mechanically connected to a crank shaft of the engine. A first transistor is turned on and off by an alternating voltage signal from the magnet generator. A power transistor forms a closed circuit in cooperation with a high voltage transformer and a current source. The power transistor is controlled by a control signal from the first transistor so as to form a primary current which is abruptly cut off. The transformer induces a high voltage which is supplied for a spark plug in response to abrupt interception of the primary current. A delay element composed of a resistor and a capacitor is connected to a base of the first transistor.

Abstract: Disclosed herein is an ignition system comprising a coil mounted on a core having first and second spaced legs, together with a rotor mounted for rotation, under normal operating conditions, in one direction relative to the core such that any point on the periphery of the rotor passes the first leg prior to the second leg. The rotor includes a magnet having arcuately spaced first and second poles and first and second pole shoes extending respectively from the first and second poles.

Abstract: A breakerless condenser discharge ignition system for an internal combustion engine and excited by a rotating permanent magnet, consists of a single module, containing a number of windings and electrical components, mounted on one pole of a ferromagnetic core for producing high voltage output pulses for firing an associated spark plug.

Abstract: In one embodiment, a capacitive discharge ignition system has a charge coil and an ignition coil including primary and secondary windings wound on a common stator structure. The charge coil is coupled to the primary winding of the ignition coil by an SCR and a main capacitor such that the capacitor is first charged by the charge coil and then discharged through the SCR into the primary winding of the ignition coil when the SCR fires. During discharge of the capacitor, the charge coil also supplies current to the primary winding of the ignition coil. The SCR may be fired by a triggering circuit which includes a capacitor network connecting the gate of the SCR to the charge winding and main capacitor or through a breakdown effect of the SCR absent the provision of a triggering circuit. The circuit arrangement obviates the need for the usual charging diode between the charging coil and the main capacitor. Several embodiments of triggering circuit for the SCR are disclosed.

Abstract: The invention relates to a breakerless ignition system with a magneto supply for use in an internal combustion engine. The system includes a transistorized circuit for interrupting the current flow in the primary winding of the coil to thereby produce the firing voltage in the secondary which is connected to the spark plug. The circuit includes either a single transistor, or two transistors in a Darlington arrangement, connected in series in the circuit of the primary winding. A switching transistor is connected to the control electrode of either the first transistor or the Darlington pair to be adaptable to turn it off. A first resistor has one end connected to the base of the switching transistor. A parallel resistor-capacitor combination is connected in series with a further resistor, and the serial combination is connected in parallel with the Darlington arrangement or the single transistor.