Abstract: The power supply apparatus is directed to enable a battery to be properly controlled for charging/discharging. A detection unit 21 detects battery voltage V, battery current I and battery ambient temperature T. A battery capacity calculation device 23 and a discharging rate calculation unit 25 estimate battery capacity and discharging rate respectively. A discharge-allowable-duration calculation unit 26 calculates discharge-allowable-duration. This discharge-allowable-duration is used for restriction the discharge-duration of the battery 6. The battery 6 is charged with the output of the generator. Charging current is restricted in accordance with upper-limit-charging-current that is calculated in an upper-limit-charging-current calculation unit 27.

Abstract: A multiplex connection inverter apparatus is provided having two separate inverters connected to each other for declining current ripples which may be generated when the superposing of the alternating current outputs with their carrier signal components held in phase with each other. The alternating current outputs of the two inverters are set opposite in the phase while their carrier signal components are in phase with each other. For connecting in parallel, the positive port of one of the two inverters is connected to the negative port of the other inverter to constitute one of two output terminals while the negative port of the one inverter is connected to the positive port of the other inverter to constitute the other output terminal. For connecting in series, the negative ports of the two inverters are connected to each other while the positive ports of the same are assigned as two output ports.

Abstract: An electronic engine-governor control is carried out using no arithmetic tables and thus relieving a load to the CPU. A throttle opening is controlled with a control quantity to suppress a difference between the actual revolutions and the target. Calculator 107A is provided for calculating the difference D between the current revolutions and the target Ne(tgt). The difference D is corrected with an adjustment A based on a difference between the current revolutions Ne(0) and the previous revolutions Ne(−1)and an adjustment B based on a difference between the previous revolutions Ne(−1) and the revolutions before previous revolutions Ne(−2). Calculator 107B is provided for calculating an adjustment E in relation to a load from the throttle opening &thgr;TH(0) and the target Ne(tgt). Calculator 107C is provided for calculating D/E, the throttle controlling signal P&thgr;TH.

Abstract: The output of a generator 1 is rectified in a rectifier circuit (a drive inverter) 2. The output of the rectifier circuit 2 is converted into AC power of a predetermined frequency in an electronic power inverter section 3. A two-way DC-DC converter 4 is connected between the output side of the rectifier circuit 2 and the output terminal of the battery 5. The battery 5 is charged by the output of the rectifier circuit 2. Electric power is also supplied from the battery 5 to the load through the two-way DC-DC converter 4 when an overloaded state is caused and the output of the generator 1 cannot meet the demand for the load in the state.

Abstract: An engine generator, sufficiently meeting a demand for a simple configuration and easy control, is provided. The output of a generator 1 connected to an engine 2 is output through a rectifier circuit 3 and an inverter 4. The generator 1 is a dual-purpose generator both for a generator function and for an electric motor function, and is driven by a drive inverter as an engine starting electric motor. A DC-DC converter 5 is provided between the output side of the rectifier circuit 3 and the output terminal of a battery 6. The generator 1 is driven as an engine starting electric motor, using the battery 6 as a power supply, when the engine is started.

Abstract: Rectifying elements are connected in parallel with switching elements 4-1 through 4-4 in a switching section 4 for the lower voltage side and rectifying elements are connected in parallel with switching elements 5-1 through 5-4 in a switching section 5 for the higher voltage side. An LC resonant circuit 6 is provided between the winding wire 3-2 for the high-voltage side in the transformer 3 and the switching section 5 for the higher voltage side; currents which flows on the primary side and the secondary side is changed into a sinusoidal one; and switching is executed in the vicinity of the zero crossing points of the currents.

Abstract: A conductive paste having a desired viscosity which does not change with time, and having stable viscosity characteristics, and an electronic component formed using the conductive paste are provided, the conductive paste including a conductive powder, an organic vehicle, at least one compound selected from the group consisting of a compound which has a tertiary amine structure and which is dissolved into the organic vehicle, and a compound which has a heterocyclic structure including nitrogen but not including sulfur and which is dissolved into the organic vehicle.

Abstract: A plurality of control power sources of voltage specifications different from one another are constructed. A generator output converted by a converter into a DC current is converted by an inverter into an AC current of a predetermined frequency. The generation output is rectified by second rectifier circuits and a capacitor and is then input to an RCC. The RCC constitutes a self-excited oscillation circuit, energy is stored into a transformer in an ON time of a transistor corresponding to an oscillation frequency thereof, and the energy is transferred to a secondary side in an OFF time. In the secondary side of the RCC, windings are formed corresponding to the number of required power sources. One group of windings forms both positive and negative power sources of a control power source, and another group of windings forms a power source for an FET driver.

Abstract: The throttle opening setting value provided from a throttle controller 108 may exceed the actual controllable range of the throttle opening. The value stored in an output voltage setter 20 is read out in response to its throttle opening setting value and transferred to a correction signal generator 21. The generator 21 supplies a correction signal determined by the output voltage setting to a modulator 23. PWM signal is transferred to an inverter 3 for determining the output voltage. When receiving the opening setting value indicative of overloading, the output voltage setter 20 releases a smaller value to decrease the output of the generator.

Abstract: The operation of a generator is improved in the efficiency throughout a wider speed range. The generator of a magnetic type is provided where a direct current output of a converter including semiconductor rectifying devices for rectifying the output of the generator is converted by an inverter to an alternating current form at a particular frequency. The conduction of thyristors is determined by a thyristor drive unit to control the voltage output of the converter to a target voltage level. The target voltage level is set to a positive value corresponding to the speed of the generator. The target voltage level is lowered when the generator is operated at a lower speed range and elevated when at a higher speed range. Accordingly, the output of the magnetic generator is increased substantially in proportion to the speed.

Abstract: The present invention provides an engine generator which is small in the size but high in the efficiency of power generation and a controller for the engine generator. The present invention is implemented by a power generator G driven by an engine E, a starter motor M for cranking the engine E, and a controller 4 for supplying various electric loads including the starter motor M with a driving voltage which depends on the power released from the generator G and a battery 5.

Abstract: An inverter 3 is controlled by feeding back an output voltage waveform for stabilizing the output and circuitry simplification. The output waveform of an inverter 3 is supplied to a CPU 5 to generate a correction of the reference sine waveform signal RS which is then used for producing a desired form of PWM signal. The output waveform is A/D converted by a converter 18 which comprises two modules 19 and 20 before transferred to a processor 50. The output waveform is received by two channels of each of the modules 19 and 20. As the input channels are sampled in a sequence, their waveforms are A/D converted at intervals of a time in each sampling period and can thus be improved in the resolution of A/D conversion. Since the modules 19 and 20 are operated at different timings lagged slightly from each other, the resolution can be increased.

Abstract: In order to achieve miniaturization and an increase in the capacitance of a monolithic ceramic capacitor, a conductive paste suitable for forming an internal conductor film is provided, the layer thickness of the internal conductor film being decreased with a decrease in the layer thickness of a dielectric ceramic layer. The conductive paste contains a conductive powder, such as a nickel powder, an organic vehicle, an organic acid barium salt and an organic zirconium compound. Each of the organic acid barium salt in terms of barium atom and the organic zirconium compound in terms of zirconium atom is about 0.05 to 1.00 mol per mol of the conductive powder, and the content of the organic zirconium compound in terms of zirconium atom is about 0.98 to 1.02 mol per mol of the organic acid barium salt in terms of barium atom.

Abstract: It is featured that a generator can respond to a variation in the load with a generous margin regardless of the its temperature. The output current of the generator 1 is rectified with a converter 3 consisting mainly of a thyristor bridge. A direct current output of the converter 3 is then converted by an inverter 4 into an alternating current at a commercial frequency and then connected to the load 5. The engine speed is controlled so that the on state angle of the thyristors in the converter 3 is maintained to a target angle. Since the target angle is set within a range not higher than the maximum limit, the generator can constantly run with a generous margin and readily respond to a variation in the load. The target angle can be modified depending on the temperature of the generator 1 in order to inhibit the engine from being overloaded and its speed from increasing excessively.

Abstract: In order to achieve miniaturization and an increase in the capacitance of a monolithic ceramic capacitor, a conductive paste suitable for forming an internal conductor film is provided, the layer thickness of the internal conductor film being decreased with a decrease in the layer thickness of a dielectric ceramic layer. The conductive paste contains a conductive powder, such as a nickel powder, an organic vehicle, an organic acid barium salt and an organic zirconium compound. Each of the organic acid barium salt in terms of barium atom and the organic zirconium compound in terms of zirconium atom is about 0.05 to 1.00 mol per mol of the conductive powder, and the content of the organic zirconium compound in terms of zirconium atom is about 0.98 to 1.02 mol per mol of the organic acid barium salt in terms of barium atom.

Abstract: A conductive paste contains a ceramic powder in addition to a conductive metal powder and an organic vehicle. The ceramic powder is a powder produced by calcining an ABO3 system in which A represents Ba or alternatively Ba partially substituted by at least one of Ca and Sr, and B represents Ti or alternatively Ti partially substituted by at least one of Zr and Hf, the system containing at least one selected from the group of consisting of Re compounds (La or the like), Mg compounds, and Mn compounds. The ceramic powder has an average grain size smaller than that of the metal powder and being incapable of sintering at the sintering temperature of the substrate-use ceramic.

Abstract: A conductive paste contains a ceramic powder in addition to a conductive metal powder and an organic vehicle. The ceramic powder is a powder produced by calcining an ABO3 system in which A represents Ba or alternatively Ba partially substituted by at least one of Ca and Sr, and B represents Ti or alternatively Ti partially substituted by at least one of Zr and Hf, the system containing at least one selected from the group of consisting of Re compounds (La or the like), Mg compounds, and Mn compounds. The ceramic powder has an average grain size smaller than that of the metal powder and being incapable of sintering at the sintering temperature of the substrate-use ceramic.

Abstract: The present invention provides a resin composition comprising 50 to 99 percent by weight of a completely amorphous polyester resin (A), and 1 to 50 percent by weight of a graft copolymer (B) obtained by graft-polymerizing a methacrylic acid ester and a vinyl aromatic compound with conjugated diene rubber particles and/or a graft copolymer (C) obtained by graft-polymerizing a methacrylic acid ester and a vinyl aromatic compound with acrylic rubber particles. According to the present invention, a resin composition and a resin sheet specifically suitable for membrane pressing, vacuum pressing, air pressing, and the like are provided, in which the resin composition and the resin sheet have superior properties, such as workability, moldability, impact resistance, transparency, and the like. In addition, plate-out is not significantly observed and whitening during embossing and heat-sealing is unlikely to occur.

Abstract: The performance of a generator is improved in a higher range of the output by correcting a decrease in the average direct current voltage supplied to an inverter. An average calculator calculates an average of direct current voltage inputs to the inverter for comparing with a target voltage (level) VDC. When it is judged by an average voltage deviation detector that the average is smaller by a specific amount than the target voltage level, the target voltage level is increased by an adjusting unit. A conductor angle setting unit determines the conduction angle of thyristors to change the voltage input of the inverter to an adjusted target voltage level VDCm. A thyristor drive circuit controls the conduction of the thyristors in the converter according to the conduction angle.

Abstract: A generator system arranged to respond to a variation in the load with a generous margin regardless of a change in the output of the generator or the engine due to degradation with the passage of time. The output current of the generator is rectified by a converter composed of thyristors in a bridge configuration of which the direct current output is converted by an inverter into an alternating current at a commercial frequency and connected to a load. The engine speed is controlled so that the conduction angle of the thyristors in the converter can be held at a target degree. As the target degree stays within a range smaller than the maximum limit, the generator runs with a margin, thus readily responding to a variation in the load. When the throttle opening is excessively opened, the target conduction angle is decreased to increase a target speed of the engine, hence inhibiting the engine from being overloaded and running at an excessive higher speed.