Abstract: Provided is a power supply interrupting apparatus. The apparatus includes a switch, for switching between a first connection connecting a primary terminal and an output terminal and a second connection connecting a secondary terminal and the output terminal; a motor, which is driven by a current outputted from the output terminal; an interlock switch, which is driven to rotate by the motor so as to choose to feed or not to feed to the secondary terminal in accordance with a resultant rotational angle; and a contact unit, which is driven to rotate by the motor so as to switch the state of a current supplied from the battery to an interrupted or non-interrupted state.

Abstract: An onboard battery monitoring apparatus for monitoring charging and discharge currents of an onboard battery 40 using a current sensor 43 includes an ignition switch 49, a main line current interrupting unit 41 for interrupting a current of a main line A which constitutes a monitoring target to be monitored by the current sensor, a detecting unit 51 for detecting an output of the current sensor 43 when the ignition switch 49 is off and the main line current interrupting unit 41 is interrupting the current, and an offset value correcting unit 51 for correcting an offset value of the current sensor 43 using a value detected by the detecting unit 51.

Abstract: This apparatus includes a one-push SW 30 for choosing an electric connection between a primary terminal 31 which is being fed and an output terminal 33 when an operating portion is operated and choosing an electric connection between a secondary terminal 32 and the output terminal 33 when the operation of the operating portion is released, a motor 61 adapted to be driven by a current outputted from the output terminal 33, an interlock SW 62 adapted to be driven to rotate by the motor to choose to have or not to have the secondary terminal 32 fed depending on a resultant rotational angle, and a contact unit 50 adapted to be driven to rotate by the motor 61 to switch the state of a current supplied from an onboard battery 10 to an interrupted or non-interrupted state.

Abstract: An onboard battery monitoring apparatus for monitoring charging and discharge currents of an onboard battery 40 using a current sensor 43 includes an ignition switch 49, a main line current interrupting unit 41 for interrupting a current of a main line A which constitutes a monitoring target to be monitored by the current sensor, a detecting unit 51 for detecting an output of the current sensor 43 when the ignition switch 49 is off and the main line current interrupting unit 41 is interrupting the current, and an offset value correcting unit 51 for correcting an offset value of the current sensor 43 using a value detected by the detecting unit 51.

Abstract: Using a simple circuit arrangement, a brightness of the lamp is controlled in accordance with an ambient brightness. A light sensor (10) produces an analog signal of which the signal level depends on an ambient brightness. An A/D converting circuit (307) converts the analog signal into a digital signal of which the pulse width depends on the signal level of the analog signal. An FET QA is on/off controlled in accordance with the digital signal (PWM), and hence an average value of current flowing through a head light (L1) is controlled in level. As a result, a brightness of the head light (L1) is controlled in accordance with the ambient brightness.

Abstract: Disclosed is a magnetic recording medium which comprises a film of an aromatic polyamide having at least 50 mole % of recurring units represented by the following general formula: ##STR1## wherein m and n are integers of from 0 to 4, with the proviso that the case where both of m and n are 0 is excluded,and at least one high performance magnetic layer of a metal or metal compound vacuum-deposited on the aromatic polyamide film. This magnetic recording medium shows a reduced dimensional change and is substantially free of curling or breakage due to elongation, and is excellent in flatness and adhesive strength between the base film and the magnetic layer. Accordingly, this magnetic recording medium is suitable for high-density magnetic recording.

Abstract: A stabilized polyphenylene sulfide is provided which comprises a recurring unit ##STR1## wherein the average n between foreign units is greater than about 5, and about 0.05 to 10 mole % per phenylene sulfide unit of an aromatic constituent chemically bonded with said polyphenylene sulfide chain, said aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups or alkaline metals, and --CONH--, and said stabilized polyphenylene sulfide has a melting point in the range of about 250.degree. C. to about 350.degree. C. Also provided is a method for preparing stabilized polyphenylene sulfide comprising preparing a polyphenylene sulfide consisting mainly of a recurring unit ##STR2## wherein the degree of polymerization of said recurring unit is greater than about 20, and reacting said polyphenylene sulfide with about 0.

Abstract: The present invention relates to a process for producing an of aromatic polyimide film comprising (A) casting on a support a dope containing an amide-type polar solvent and 10-45 weight percent of a polyamic acid having more than 0.4 dl/g an inherent viscosity of more than 0.4 dl/g, (B) concentrating the polymer content to be at least higher than that of the initial dope while simultaneously raising the ring closure ratio above 30%, (C) removing the solvent from the film by extraction in an aqueous medium so as to lower the solvent content of the film below 10% and (D) then heating the film to a temperature of more than 200.degree. C.The process of the present invention is useful for the production of aromatic polyimide film having a reduced rate of solvent decomposition and improved productivity.

Abstract: A stabilized polyphenylene sulfide is provided which comprises a recurring unit ##STR1## wherein the average n between foreign units is greater than about 5, and about 0.05 to about 10 mole % per phenylene sulfide unit of an aromatic constituent chemically bonded with said polyphenylene sulfide chain, said aromatic constituent containing an electron attractive group selected from the group consisting of --SO.sub.2 --, --CO--, --NO.sub.2, --SO.sub.3 R, --COOR, wherein R is H, lower aliphatic hydrocarbon groups, aromatic hydrocarbon groups or alkaline metals, and --CONH--, and said stabilized polyphenylene sulfide has a melting point in the range of about 250.degree. C. to about 350.degree. C. Also provided is a method for preparing stabilized polyphenylene sulfide comprising preparing a polyphenylene sulfide consisting mainly of a recurring unit ##STR2## wherein the degree of polymerization of said recurring unit is greater than about 20, and reacting said polyphenylene sulfide with about 0.

Abstract: A biaxially oriented poly-p-phenylene sulfide film comprising recurring units of the formula ##STR1## a melt viscosity of more than 100 poise and less than 600,000 poise at a shear rate of 200 sec.sup.-1 and at 300.degree. C., and a specific gravity of which is more than 1.330 and less than 1.400. The film has improved mechanical properties, thermal dimensional stability and high temperature durability. Typical applications of the film are as electrical insulation, capacitor, magnetic recording medium, packaging material, and so forth.

Abstract: An improved magnetic recording medium comprising a flexible support consisting of at least about 70 mol % of p-oriented aromatic polycarbonamide units. The polycarbonamide may include substituent groups on the aromatic nuclei. The support has a density of more than about 1.41 g/cm.sup.3 at 25.degree. C and 0% relative humidity, and a tensile modulus higher than about 800 kg/mm.sup.2 in at least one direction, combined with a thin layer of magnetically susceptible material deposited electrically or dispersed in a nonmagnetic binder. The magnetic recording medium in this invention shows excellent running performance and has superior dimensional stability both thermally and hygroscopically.

Abstract: Aromatic polyamide-hydrazide films, consisting of p-benzamide p-phenylene terephthalamide and/or terephthaloyl hydrazide recurring units, as major chain constituents, are removed from inorganic residue by an aqueous mixture which dissolves or swells the films, and are heated up to their crystallization temperatures in tension, giving rise to high tensile strength and modulus, good hygroscopic dimensional stability and excellent electrical insulation properties.