Abstract: A counting scale includes a weighing pan, a weighing sensor connected to the weighing pan, a storage unit including a registered data table storing, as registered data, a unique identification number, an article name, and a unit weight with respect to one article, an arithmetic processing unit configured to urge placement of one piece of the target article on the weighing pan, calculate a unit weighed value of the one piece of the target article from the weighing sensor, narrow down registered data including a unit weight within a predetermined range with respect to the unit weighed value as candidate data from the registered data table, and obtain sorted candidate data by selecting and sorting the candidate data in ascending order of absolute value of deviation from the unit weighed value, and a display unit configured to display the sorted candidate data.

Abstract: A series coupled component partially includes a) a load circuit including an inductor and an EL or EL array having capacitive load characteristic, b) a load circuit including an inductor, a bipolar capacitor, and a diode circuit adapted to supply bidirectional current flows across an LED or LD, or c) a load circuit including an inductor, an EL or EL array having capacitive load characteristic, and the diode circuit. An inverter has coupling output terminals coupled to one end or both ends of the load circuit whereby an AC power inverted from a DC power source is supplied to the load circuit to operate at least one member of the EL, EL array, LED and LD. The inverter has a pair of positive and negative switches each comprising a zero-crossing switch mechanism adapted to automatically close its channel when the current becomes zero, the pair of positive and negative switches each being provided with a bypass channel having a reverse current bypass diode for bypassing the zero-crossing switch mechanism.

Abstract: In a power supply circuit for operating an electroluminescent (EL) element comprising a DC power supply, an inverter connected across the power supply, and the EL element connected to the inverter, an inductor is inserted between the inverter and the EL element wherein an AC voltage is applied from the inverter through the inductor to the EL element to emit light. Another EL operating circuit includes a DC power supply, an inverter, a transformer, and a bipolar capacitor connected in this order and an AC power output on a secondary winding of the transformer is applied to an EL element to generate light. Both the circuits enables a noticeable luminance increase and power saving.