Abstract:
Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak value for a longer period than the cycle of an inverter (2). Between the input side terminals of the diode full bridge circuits, there are connected voltage maintaining means such as capacitors maintaining a voltage peak value for a longer period than the cycle of the inverter. Moreover, the output side terminals of the diode full bridges are connected in series via smoothing means such as almost equivalent smoothing capacitors and between the output side terminals, an anode grounding type X-ray tube (5) is connected. Thus, it is possible to realize a small-size and light-weight device at a reduced cost and reduce the ripple in the output voltage while using the anode grounding type X-ray tube.
Abstract:
An assembled camshaft (10) for engine includes: a cam lobe piece (12); and a hollow shaft member (11) having at least two shaft fixing surfaces (11A) formed by plasticity process on a portion of the hollow shaft member (11) corresponding to a position between cylinders of the engine.
Abstract:
An X-ray tube apparatus (2) having an anode rotating mechanism for preventing damage of the anode (23) of the X-ray tube apparatus thereby to shorten the X-ray exposure waiting time. When the measured number of revolutions of a rotary anode is determined to be predetermined number from only the impedance or current information on the basis of both voltage information and current information on a stator coil (22) of motor constituent elements for rotating the rotary anode, a DC high voltage outputted from an X-ray high-voltage unit (1) is applied between the anode (23) and a cathode (24) of the X-ray tube apparatus, thus exposing a subject (130) to X-rays and imaging the subject. An X-ray generating device and a radiograph are also disclosed.
Abstract:
A semiconductor switch 12 connected in series with a smoothing capacitor 12 is constituted by connecting in parallel a diode 13D which permits to flow current regenerated from energy of electric charges stored in a high voltage capacitor 17 to a primary side of a high voltage transformer 15 for the smoothing capacitor 12 and switching means 13S which interrupts an output from the smoothing capacitor 12, and after turning off the switching means 13S, through alternative on and off control of switching means 161S˜164S the energy of electric charges stored in the high voltage capacitor 17 is regenerated to the smoothing capacitor 12 by making use of parasitic leakage inductance 15L. As a result, an X-ray high voltage device is provided which permits to drop a wave tail of a tube voltage in a high speed without complexing the structure of the high voltage part thereof.
Abstract:
Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak value for a longer period than the cycle of an inverter (2). Between the input side terminals of the diode full bridge circuits, there are connected voltage maintaining means such as capacitors maintaining a voltage peak value for a longer period than the cycle of the inverter. Moreover, the output side terminals of the diode full bridges are connected in series via smoothing means such as almost equivalent smoothing capacitors and between the output side terminals, an anode grounding type X-ray tube (5) is connected. Thus, it is possible to realize a small-size and light-weight device at a reduced cost and reduce the ripple in the output voltage while using the anode grounding type X-ray tube.
Abstract:
In an X-ray generating device of the neutral grounding system, to remove an unbalance voltage generated due to difference in impedance of parallel transformer coils of the high voltage transformer and particularly an unbalance voltage involved with difference in impedance above and below the neutral points generated in a metal X-ray tube, a plurality of currents flowing in opposite directions through primary windings of the parallel transformer coils in the high voltage transformer are passed through by or wound around a common toroidal coil or wound around an outer circumference of the toroidal coil at a predetermined ratio of winding number, and the unbalance voltage occurring to the secondary side is cancelled by changing primary current with magnetic behavior.
Abstract:
A toner for developing an electrostatic image, a process for producing the same, a developer for developing an electrostatic image and a process for forming an image are disclosed. The toner contains a resin, a colorant and a releasing agent, in which the toner has protrusions having a height of about from 0.05 to 2 μm, a part of the protrusions encompasses the releasing agent, and a proportion of elements derived from the releasing agent is about 10% by atom or less based on elements on a surface of the toner that is quantitatively determined by X-ray photoelectron spectroscopy.
Abstract:
An apparatus and method for recovering solder from dross present on the surface of a molten solder includes a solder reservoir for holding a pool of molten solder, and a solder nozzle disposed in the solder reservoir and adapted to direct a solder wave against a printed circuit board to be soldered. The solder nozzle includes opposite side troughs inclined downwardly toward one side of the solder reservoir to direct dross toward a dross zone. A semicircular hood extends across the solder reservoir and is located above the dross zone. A screw extends across the solder reservoir and is covered by the hood. The screw is activated to agitate the dross so as to remove oxides and recover solder from the dross.
Abstract:
An apparatus for forming a metal feedstock from waste metal products is disclosed. The apparatus includes devices for: crushing the metal products into pieces; magnetically separating sheet-shaped ferrous scraps and ferrous cast blocks from the crushed pieces; placing the cast blocks between the sheet-shaped scraps to make a sandwich structure; and pressing the sandwich structure to form a metal feedstock.
Abstract:
A waste object containing oil has a first opening formed therein at an upper portion thereof and a second opening positioned below the first opening. The first and second openings are connected to a recovery tank. Hot water of a predetermined temperature is held in the recovery tank and is caused to accumulate inside the waste object via the second opening. Oil that has floated upwards is recovered in the recovery tank via the first opening.