Abstract: The present invention implements a magnetic disk drive usable under a wide range of temperature environment conditions, and a magnetic head assembly. The flying height of a magnetic head slider (1) can be controlled against a change of temperature so that the flying height of the magnetic head slider (1) is low at low temperatures and high at high temperatures, thereby the variations of the coercivity of a magnetic disk (2) can be cancelled. Further, by setting the rate of change of the crown value with respect to the change of temperature to 0.26 to 0.62 nm/° C., the flying height can be controlled so that the flying height becomes low at low temperatures and high at high temperatures, while maintaining the uniformity of the profile of the flying height of the magnetic head slider (1) from the inner periphery to the outer periphery of the magnetic disk (2).

Abstract: The present invention is a variable gain amplifier for amplifying a radio frequency signal by using a field effect transistor for signal amplification. The variable gain amplifier includes: an input impedance correcting means for correcting the input impedance when varying the gain at the input side of the field effect transistor for signal amplification; an output impedance correcting means for correcting the output impedance when varying the gain at the output side of the field effect transistor for signal amplification; and an amplifier bypass means for passing the radio frequency input signal to the output side by skipping the field effect transistor for signal amplification when varying the gain. According to the present invention, a variable gain amplifier is favorable in the voltage standing wave ratio (VSWR) at the input and output end regardless of presence or absence of gain variation, and the gain attenuation amount can be arbitrarily set.

Abstract: There are provided a slider and a magnetic disk unit that can significantly reduce a variation in flying height caused by an air pressure change even if the size of the magnetic disk unit or the slider is small.

Abstract: A flexible electrically conductive fabric is obtained by plating a fabric constructed of multifilament yarn composed of a plural flat thermoplastic singlefilaments.

Abstract: There is provided an automotive air conditioning system, which is free from troubles in traveling itself caused by power consumption in air conditioning means in an automobile having storage means, power generation means for charging the storage means, and air conditioning means having an electric compressor driven by feeding from the storage means.

Abstract: An electrically conductive fabric plated with a metal is disclosed wherein a percent fabric surface occupancy of warp as a constituent of the fabric is 90% to 110% and that of weft is 40% to 80%. The electrically conductive fabric is superior in all of resin back leak preventing property, flexibility yarn fray preventing property, electrical conductivity and electromagnetic wave shieldability.

Abstract: The present invention is a variable gain amplifier for amplifying a radio frequency signal by using a field effect transistor for signal amplification. The variable gain amplifier includes: an input impedance correcting means for correcting the input impedance when varying the gain at the input side of the field effect transistor for signal amplification; an output impedance correcting means for correcting the output impedance when varying the gain at the output side of the field effect transistor for signal amplification; and an amplifier bypass means for passing the radio frequency input signal to the output side by skipping the field effect transistor for signal amplification when varying the gain. According to the present invention, a variable gain amplifier is favorable in the voltage standing wave ratio (VSWR) at the input and output end regardless of presence or absence of gain variation, and the gain attenuation amount can be arbitrarily set.

Abstract: There is provided an automotive air conditioning system, which is free from troubles in traveling itself caused by power consumption in air conditioning means in an automobile having storage means, power generation means for charging the storage means, and air conditioning means having an electric compressor driven by feeding from the storage means.

Abstract: An air bearing slider for supporting a transducer over a moving recording medium and a method for fabricating such an air bearing slider. The air bearing slider lifts off the recording medium with a predetermined take-off velocity when the recording medium begins to move. The air bearing slider has a first etched region that has a first etch depth and a second etched region that has a second etch depth. The etch depth ratio of the first etch depth to the second etch depth provides a pad-type air bearing slider with a take-off velocity ratio that is greater than or equal to 100%. The etch depth ratio of the first etch depth to the second etch depth provides a rail-type air bearing slider with a take-off velocity ratio that is greater than or equal to approximately 70%.

Abstract: There are provided fabrics excellent in electrical conductane and antistatic property as well as dust proof clothes using the same. Conductive yarn comprising synthetic filament yarn as the core covered with conductive bicomponent fibers is used as conductive yarn used in the warps and/or wefts at intervals.

Abstract: A IC card producing method includes testing steps which can enhance the reliability and generality of IC cards. The method of producing IC cards of the non-contact type or contact type implements a wafer processing step (step 100), wafer inspection step (step 200), COB fabrication step (step 300), COB on-card mounting step (step 400), IC card production process 0th-order issuance step (step 500), IC card inspection step (step 600), 1st-order issuance processing step (step 700), and 2nd-order issuance processing step (step 800) to complete a contact-type IC card. Particularly, the method includes the chip testing of step 200 and IC card testing of steps 500-800 for the IC card in its state having a tested chip. The method further adopts a dual testing scheme which includes a memory verification test conducted inside the internal memory, such as an EEPROM, concurrently with the IC card test by the tester.

Abstract: There are provided fabrics excellent in electrical conductane and antistatic property as well as dust proof clothes using the same. Conductive yarn comprising synthetic filament yarn as the core covered with conductive bicomponent fibers is used as conductive yarn used in the warps and/or wefts at intervals.

Abstract: To a composite sheet in which on one or both surfaces of an open cell foam sheet fiber cloth is bonded, a conductive metal coating is provided so as to maintain the open cell of the foam followed by providing thereon a flame retardant composition, thereby a flame retardant conductive material suitable for a gasket material for electromagnetic wave shield is obtained.

Abstract: An air bearing slider supports a transducer over a moving recording medium based on air flow generated by the movement of the recording medium. A first pad is formed near a leading edge of the slider and has a first leading edge contoured to provide a first effective length relative to the air flow for the first pad. A second pad is formed near a trailing edge of the slider and has a second leading edge contoured to provide a second effective length relative to the air flow for the second pad. A third pad is formed near the trailing edge of the slider and has a third leading edge which is contoured to provide a third effective length relative to the air flow for the third pad. The first, second, and third effective lengths vary as the air bearing slider moves relative to the moving recording medium to maintain a desired orientation and fly height for the slider during such movement.

Abstract: There are provided fabrics excellent in electrical conductane and antistatic property as well as dust proof clothes using the same. Conductive yarn comprising synthetic filament yarn as the core covered with conductive bicomponent fibers is used as conductive yarn used in the warps and/or wefts at intervals.

Abstract: An electrically conductive fabric plated with a metal is disclosed wherein a percent fabric surface occupancy of warp as a constituent of the fabric is 90% to 110% and that of weft is 40% to 80%. The electrically conductive fabric is superior in all of resin back leak preventing property, flexibility yarn fray preventing property, electrical conductivity and electromagnetic wave shieldability.

Abstract: A flexible electrically conductive fabric is obtained by plating a fabric constructed of multifilament yarn composed of a plural flat thermoplastic singlefilaments.

Abstract: A fabric is provided which exhibits a high dust collecting efficiency and which is superior in both waterproofness and abrasion resistance, and which is especially suitable for us in dust proof and/or waterproof clothes.The fabric is a plain weave fabric of synthetic filaments, wherein warp yarns occupy 60% to 90% of the fabric surface, a percent (%) overlap of the width (L2+L3) of overlapped portions of adjacent warp yarns relative to the width (L1) of an overlapped portion of adjacent warp yarns in a section of the fabric, i.e., ((L2+L3)/L1).times.100 is in the range of 35% to 60%, and weft yarns of the fabric are located inside the warps in the thickness direction of the fabric.

Abstract: A contact making and breaking device improves the dielectric absorption property of capacitance between one signal wire brought out from a reed switch and an conductive casing. A low current measurement system using the contact making breaking device greatly shortens the measurement waiting time when low current is measured. The contact making and breaking device includes a reed switch with first and second signal wires brought out from either end, a conductive casing, and an insulating material formed between at least the first signal wire and the conductive casing. A tubular conductor is emplaced in the region in which the insulating material is formed and at least partially encloses the reed switch. The tubular conductor is connected to the first signal wire.

Abstract: A measurement device measures voltage/current characteristics of a device under test (DUT) and suppresses spikes and overshoots which appear in an output when voltage and current settings fed to the DUT are changed, and makes possible rapid setting changes. The measurement device has a V holding loop which contains a capacitor, an error amplifier, an FET switch, a voltage-current converter, an integrator, a power amplifier, a current ranging circuit and a buffer amplifier. During ordinary operation of the circuit, the FET switch is on and the output voltage is remembered by the capacitor. When the voltage-current settings are changed, the FET switch is off, the feedback circuit of the V holding loop is formed, and the value of the output voltage immediately before the changes were performed is held, on the basis of the voltage of the capacitor.