Abstract: A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.

Abstract: A switching circuit according to one embodiment is a switching circuit including at least one semiconductor switch element having an input, output, and a common terminals, a pulse-like signal being applied between the input and common terminals to switch a current between the output and common terminals. The switching circuit further includes a capacitance suppression element section connected at least one of between the input and output terminals, between the input terminal common terminals, and between the output and common terminals. The capacitance suppression element section reduces a parasitic capacitance between the terminals of the semiconductor switch element where the capacitance suppression element section is connected to less than that obtained when the capacitance suppression element section is not connected at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.

Abstract: The invention provides a golf ball endowed with an improved distance and durability. The ball has a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator, a metal oxide and an organosulfur compound. The co-crosslinking agent is methacrylic acid, the metal oxide is zinc oxide, and the rubber composition contains the crosslinking initiator in an amount of from 1.2 to 5 parts by weight per 100 parts by weight of the base rubber. The finished ball has an initial velocity of at least 74.3 m/s.

Abstract: The invention provides a golf ball endowed with an improved distance and durability. The ball has a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The base rubber is a mixture of (A) polybutadiene with (B) styrene-butadiene rubber and/or isoprene rubber, the co-crosslinking agent is methacrylic acid, and the metal oxide is zinc oxide. The rubber composition contains the crosslinking initiator in an amount of from 1.2 to 5 parts by weight per 100 parts by weight of the base rubber.

Abstract: The invention provides a golf ball endowed with an improved distance and durability. The ball has a core and a cover, the core being formed of a rubber composition containing a base rubber, a co-crosslinking agent, a crosslinking initiator and a metal oxide. The co-crosslinking agent is methacrylic acid. The core has a hardness profile in which, letting (A) be the JIS-C hardness at the core surface, (B) be the JIS-C hardness at a position 2 mm in from the surface toward the center of the core, (C) be the JIS-C hardness at a position 5 mm in from the surface toward the center of the core, (D) be the JIS-C hardness at a position 10 mm in from the surface toward the center of the core, (E) be the JIS-C hardness at a position 15 mm in from the surface toward the center of the core, and (F) be the JIS-C hardness at the center of the core, (A) to (F) have specific hardnesses.

Abstract: The present invention relates to a golf ball having a solid core of at least one layer, a cover of at least one layer encasing the core, and a paint film on a surface of the cover, wherein at least one cover layer and/or the paint film includes a luster pigment composed of metal oxide-coated alumina flakes. This golf ball has a high commercial value because of its visual impact and high quality feel, and because it achieves a bright, color-saturated effect without the yellow cast typical of conventional golf ball surfaces.

Abstract: A colored golf ball satisfies the following conditions: (i) a color difference ?E* between the inside layer and the ball of at least 30; (ii) the inside layer has a lightness L* value, expressed in the L*a*b* color system based on JIS 28729, of at least 82; (iii) the ball has a lightness L* value of at least 50; (iv) the lightness L* value of the ball?the lightness L* value of the inside layer; (v) the inside layer has a transparency which is up to 10% in terms of total transmittance and up to 1.0% in terms of parallel transmittance; (vi) the cover has a transparency which is at least 50% in terms of total transmittance and at least 1.0% in terms of parallel transmittance; and (vii) the inside layer has a haze (H), mentioned in JIS K7105 (1981), of at least 90.

Abstract: A method of manufacturing golf balls having a highly transparent cover includes, prior to formation of the cover, a preformed body fabricating step wherein a fluorescent material that emits light when exposed to ultraviolet radiation is included in or coated onto the preformed body. In this way, a preformed body which matches a cover to be formed can be easily and reliably identified from among a plurality of types of preformed bodies stored at a temporary storage place. This manufacturing method enables golf balls of excellent visibility and stylishness to be efficiently produced.

Abstract: The invention provides a golf ball having a core and a cover of at least one layer. The core is formed of a rubber composition which includes a polybutadiene-containing base rubber, an unsaturated carboxylic acid and/or a metal salt thereof, an organic peroxide and sulfur, and for which the value of [sulfur (mol)÷available active oxygen content in organic peroxide] is at least 0.01 and not more than 0.019.

Abstract: The invention provides a golf ball having a core and a cover of at least one layer. The core has a cross-sectional hardness which, letting (H?14) be a JIS-C hardness at a position 14 mm in from a surface toward a center of the core, (H?8) be a JIS-C hardness at a position 8 mm in from the surface toward the center of the core, (H?6) be a JIS-C hardness at a position 6 mm in from the surface toward the center of the core, and (H?4) be a JIS-C hardness at a position 4 mm in from the surface toward the center of the core, satisfies the formulas (1) H?14<70, (2) H?8<72, (3) H?6<75, and (3) H?4?H?8>8.

Abstract: A power inverter circuit 1 is a bridge power inverter circuit comprising first and second switching elements 11, 12 sequentially connected in series between input terminals on higher and lower voltage sides and third and fourth switching elements 13, 14 sequentially connected in series between the input terminals on the higher and lower voltage sides and alternately turning on a set of the first and fourth switching elements 11, 14 and a set of the second and third switching elements 12, 14 so as to convert a DC power fed between the input terminals on the higher and lower voltage sides into an AC power. One of the sets of the first and third switching elements 11, 13 and the second and fourth switching elements 12, 14 is subjected to switching control at a frequency higher than that of the other.

Abstract: A colored golf ball satisfies the following conditions: (i) a color difference ?E* between the inside layer and the ball of at least 30; (ii) the inside layer has a lightness L* value, expressed in the L*a*b* color system based on JIS 28729, of at least 82; (iii) the ball has a lightness L* value of at least 50; (iv) the lightness L* value of the ball?the lightness L* value of the inside layer; (v) the inside layer has a transparency which is up to 10% in terms of total transmittance and up to 1.0% in terms of parallel transmittance; (vi) the cover has a transparency which is at least 50% in terms of total transmittance and at least 1.0% in terms of parallel transmittance; and (vii) the inside layer has a haze (H), mentioned in JIS K7105 (1981), of at least 90.

Abstract: A switching circuit according to one embodiment includes: a switching element that has a first terminal and a second terminal, and is driven by a pulse signal to switch a conduction state between the first and second terminals; a power source section that supplies a voltage to the first terminal; a load circuit that is connected in parallel with the power source section; a passive circuit section that is connected between a connection point between the power source section and the load circuit, and the first terminal, and suppresses a current flowing from the connection point to the switching element at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse signal; and a resonant circuit section that is connected between the passive circuit section and the connection point, and resonates at the frequency of N times.

Abstract: To provide a parking support device for easily and quickly moving or rotating a target parking frame to an appropriate position. The parking support device includes a target parking position setting unit configured to set a target parking position at which a vehicle is to be parked with a target parking frame superimposed on an actual image displaying an area surrounding the vehicle. The parking support device guides the vehicle to the target parking position set by the target parking position setting unit. The target parking position setting unit moves the target parking frame initially displayed on a touch display to a position indicated by a coordinate point determined by a touch operation.

Abstract: A method of manufacturing golf balls having a solid core formed of a rubber composition and a cover of one or more layer encasing the core is disclosed. The method includes the steps of forming a solid core, treating a surface of the core with an aqueous solution containing a haloisocyanuric acid and/or a metal salt thereof, washing the surface of the surface-treated core, and covering the washed surface of the core with a cover material. The manufacturing method lowers the burden on the environment, and the golf balls thus obtained have a good feel when struck, a good scuff resistance and a high durability to impact.

Abstract: The invention provides a colored golf ball composed of a core, a cover having a plurality of dimples formed on an outside surface thereof, and an inside layer in contact with the cover. The ball satisfies the following conditions: (i) a color difference ?E* between the inside layer and the ball of at least 30; (ii) the inside layer has a lightness L* value, expressed in the L*a*b* color system based on JIS Z8729, of at least 82; (iii) the ball has a lightness L* value of at least 50; (iv) the lightness L* value of the ball?the lightness value of the inside layer; (v) the inside layer has a transparency which is up to 10% in terms of total transmittance and up to 1.0% in terms of parallel transmittance; (vi) the cover has a transparency which is at least 50% in terms of total transmittance and at least 1.0% in terms of parallel transmittance; and (vii) the inside layer has a haze (H), mentioned in JIS K7105 (1981), of at least 90.

Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which contains a diene polymer having a smallest molecular weight value of at least 3,000.

Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which includes a diene polymer having a molecular weight distribution (Mw/Mn) of less than 1.9.

Abstract: A golf ball endowed with a good rebound and an excellent flight performance can be obtained using a golf ball composition of good workability which contains a diene polymer having a peak top molecular weight (Mp) on a molecular weight distribution curve measured using gel permeation chromatography (GPC) of at least 40×104 and not more than 100×104.

Abstract: A golf ball having a good rebound and excellent flight performance can be obtained using a golf ball composition which includes a diene polymer containing not more than 1.5% of components having a molecular weight of 30,000 or less.