Abstract: A power conversion circuit uses a multiphase AC power source as an input and has a plurality of bidirectional switches each of which is connected to each phase of the multiphase AC power source. A switching control circuit controls the states of the plurality of bidirectional switches and switches a combination of two phases of the multiphase AC power source, relating to interphase voltage to be outputted from the power conversion circuit to a load side. A resonant circuit is connected to an output side of the power conversion circuit. The switching control circuit, at a time of switching of the combination of the two phases that output the interphase voltage to the load side, switches the states of the bidirectional switches relating to the switching, by soft switching.

Abstract: A socket includes a socket body having a mounting part, and a holding lever supported on the mounting part to hold a relay mounted at a mounting position of the mounting part. The holding lever includes a support, and a stopper provided on the support and movable between a restriction position at which movement of the relay, positioned at the mounting position, in a removing direction is restricted and a restriction release position at which the restriction of the movement of the relay in the removing direction is released. The holding lever is supported on the mounting part to be movable between a retreat position at which a relay can be mounted and removed and a holding position at which a relay positioned at the mounting position can be held when the stopper is positioned at the restriction position such that the stopper covers a center-of-gravity position of the relay.

Abstract: An electromagnetic relay includes a base including a fixed contact piece and a movable contact piece. The movable contact piece includes a movable contact point that is moved to contact and be separated from the fixed contact piece at a fixed contact point by driving the movable contact piece. The movable contact piece includes a terminal portion held in the base and partially protruding from the base, a first contact piece portion connected to the terminal portion and protruding from the base at a different position from the terminal portion, a bent portion connected to the first contact piece portion and changing a protruding direction gradually, and a second contact piece portion connected to the bent portion, extending in a different direction from a base portion, and provided with the movable contact point.

Abstract: The invention provides a data display device and a system which display a sales amount or number of coins inserted into, for example, a game machine in a form not directly comprehensible to a person in order to prevent reading by an unauthorized person. This prevents dishonest acts or pilfering by the unauthorized person. This form, not directly comprehensible, can be a bar code. The unauthorized person can read the sales data only by a bar code reader, so he will have no way to know the sales amount to match with the actual collected amount of the coins.

Abstract: An electronic blood pressure meter, comprising: a cuff adapted to be placed on a subject person; a pressurizing pump for pressurizing air inside the cuff; a vent valve for removing air from the cuff; a pressure sensor for detecting air pressure in the cuff; cardiovascular information detector for detecting cardiovascular information on the subject person from the pressure sensor and computing a parameter from the cardiovascular information; a membership function storage unit storing a plurality of membership functions using a relative pressure of the air pressure in the cuff to a blood pressure value as its input variable; a membership function selecting unit for selecting one of the membership functions corresponding to the parameter from the membership functions stored in the membership function storage unit; and a control unit for controlling operation of the electronic blood pressure meter according to the membership functions.

Abstract: A sensor according to this invention comprises an oscillation circuit including an LC resonant circuit, wherein a detection signal is prohibited upon arrival of an external radio wave.