Abstract: An analog switch circuit that includes a first field-effect transistor, a source of which is coupled to a first switch terminal, and a drain of which is coupled to a second switch terminal; a first capacitance storing electric charge; a second capacitance storing electric charge; a first switch circuit that couples the first capacitance between a direct current voltage node and a reference potential node; a second switch circuit that couples the first capacitance and the second capacitance in parallel; and a third switch circuit that couples the second capacitance between a gate and the source of the first field-effect transistor.

Abstract: A circuit breaker includes a vacuum valve, an electromagnet including a first coil for driving an operating shaft of the vacuum valve toward an opening direction by electromagnetic repulsion, a movable core and a permanent magnet. Further, an operating mechanism is provided which excites the first coil to close the vacuum valve, holds the vacuum valve closed by an attractive force of the permanent magnet and excites the first coil in a direction reverse to an excitation direction in closing operation to open the vacuum valve. In the circuit breaker, together with the first coil, a second coil is disposed which is excited simultaneously with an electromagnetic repulsion coil for a quick opening operation by electromagnetic repulsion is provided in the electromagnet.

Abstract: A diagnostic system and method. In one embodiment, the invention is a diagnostic system comprising: a form comprising one or more diagnostic questions and one or more possible answers to each diagnostic question; a first overlay comprising one or more windows and one or more diagnostic fields, wherein when the first overlay is positioned over the form, the answers to the diagnostic questions that are indicative of the user having a first medical condition are visible through the windows of the first overlay; and wherein the one or more diagnostic fields contain criteria for diagnosing the user with the first medical condition based on the user's selection of answers on the form that are visible through the windows of the first overlay. In other embodiments, the invention is a computer-based version of the diagnostic system and a diagnostic method.

Abstract: A diagnostic system and method. In one embodiment, the invention is a diagnostic system comprising: a form comprising one or more diagnostic questions and one or more possible answers to each diagnostic question; a first overlay comprising one or more windows and one or more diagnostic fields, wherein when the first overlay is positioned over the form, the answers to the diagnostic questions that are indicative of the user having a first medical condition are visible through the windows of the first overlay; and wherein the one or more diagnostic fields contain criteria for diagnosing the user with the first medical condition based on the user's selection of answers on the form that are visible through the windows of the first overlay. In other embodiments, the invention is a computer-based version of the diagnostic system and a diagnostic method.

Abstract: A diagnostic system and method. In one embodiment, the invention is a diagnostic system comprising: a form comprising one or more diagnostic questions and one or more possible answers to each diagnostic question; a first overlay comprising one or more windows and one or more diagnostic fields, wherein when the first overlay is positioned over the form, the answers to the diagnostic questions that are indicative of the user having a first medical condition are visible through the windows of the first overlay; and wherein the one or more diagnostic fields contain criteria for diagnosing the user with the first medical condition based on the user's selection of answers on the form that are visible through the windows of the first overlay. In other embodiments, the invention is a computer-based version of the diagnostic system and a diagnostic method.

Abstract: An analog switch circuit that includes a first field-effect transistor, a source of which is coupled to a first switch terminal, and a drain of which is coupled to a second switch terminal; a first capacitance storing electric charge; a second capacitance storing electric charge; a first switch circuit that couples the first capacitance between a direct current voltage node and a reference potential node; a second switch circuit that couples the first capacitance and the second capacitance in parallel; and a third switch circuit that couples the second capacitance between a gate and the source of the first field-effect transistor.

Abstract: A circuit breaker comprising a vacuum valve; an electromagnet including a first coil for driving an operating shaft of the vacuum valve toward an opening direction by electromagnetic repulsion, a movable core and a permanent magnet; and an operating mechanism which excites the first coil to close the vacuum valve, holds the vacuum valve closed by an attractive force of the permanent magnet and excites the first coil in a direction reverse to an excitation direction in closing operation to open the vacuum valve. In the circuit breaker, together with the first coil, a second coil which is excited simultaneously with an electromagnetic repulsion coil for electromagnetic repulsion in quick opening operation by electromagnetic repulsion is provided in the electromagnet.

Abstract: A diagnostic system and method. In one embodiment, the invention is a diagnostic system comprising: a form comprising one or more diagnostic questions and one or more possible answers to each diagnostic question; a first overlay comprising one or more windows and one or more diagnostic fields, wherein when the first overlay is positioned over the form, the answers to the diagnostic questions that are indicative of the user having a first medical condition are visible through the windows of the first overlay; and wherein the one or more diagnostic fields contain criteria for diagnosing the user with the first medical condition based on the user's selection of answers on the form that are visible through the windows of the first overlay. In other embodiments, the invention is a computer-based version of the diagnostic system and a diagnostic method.

Abstract: A dc power supply circuit connects a plurality of dc circuit breakers to a semi-conductor converter, returning again to the semi-conductor converter through a dc driving part such as an electric railcar connected to each dc circuit breaker. A second dc circuit breaker of larger capacity than the above-mentioned dc circuit breakers is provided in a return circuit and opened when a short circuit current is detected. A current decreasing means opens the second dc circuit breaker to decrease the short circuit current and includes, for example, a series-circuit of a resistor R and a reactor L. The dc power supply circuit has a large interruption capacity with low resistance loss.

Abstract: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resing with an epoxy resin havng a compatibility with said bisphenol type epoxy resin and structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a curing agent and, if desired, a pigment and other additives.

Abstract: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resin with an epoxy resin having a compatibility with said bisphenol type epoxy resin and a structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a cutting agent and, if desired, a pigment and other additives.

Abstract: A rust preventive coating composition having a long pot life and providing a coating in which generation of white rust is greatly reduced, said coating composition being obtained by incorporating a small amount of at least one salt selected from the group consisting of molybdate salts, tungstate salts, phosphomolybdate salts and phosphotungstate salts into a coating composition comprising as main components an alkali metal silicate or ammonium silicate and zinc powder.

Abstract: An anti-corrosive coating composition having an improved weldability can be obtained by combining water-soluble potassium silicate and/or ammonium silicate as a binder with a mixture of zinc powder with iron phosphide and/or nickel phosphide as an anti-corrosive pigment.

Abstract: An aqueous epoxy resin paint composition comprising an epoxy resin emulsion formed by emulsifying a bisphenol type epoxy resin or a mixture of a bisphenol type epoxy resin with an epoxy resin having a compatibility with said bisphenol type epoxy resin and a structure similar to that of said bisphenol type epoxy resin but being quite different therefrom in a part of the structure in water with a polyoxyethylene benzylated phenyl ether having an HLB value of at least 15, and a curing agent and, if desired, a pigment and other additives.