Abstract: An object of this invention is to enhance insulating properties between the terminals provided at both terminals of the secondary windings of the wound-rotor type transformer, and to drive the wound-rotor transformer safely, and the primary windings 110, secondary windings M1, M2 are mounted on the bobbins inserted with the bobbins. The terminal base 1 is provided at the side where the high tension terminals of the bobbins 102, 104 are disposed, and The first terminals S1, S2, S3 and S4 connected to the one terminals of the primary windings M1, M2 are mounted on the terminal base 1 at the side where the high tension terminals are disposed. The second terminals A, B connected to the other terminals of the secondary windings M1, M2 mounted on the bobbins 102, 104 are mounted at the side where the rearward low tension terminals are disposed at the side where the high tension terminals of the bobbins 102, 104 at a predetermined distance. The second terminals A, B are used as the ground terminals.

Abstract: In case of driving a plurality of lamps with the use of a plurality of output transformers, a difference in the bright-ness of each lamp occurs by a dispersion of characteristics of the output transformers, and an object is to prevent such troubles. For this purpose, a primary side of a plurality of output transformers of a one input-plural output type are respectively connected, and illumination units are connected to the secondary side of each output transformer. All of the secondary output terminals of each output transformer are connected to the secondary output terminals of counter phase and are connected by forming a loop circuit with the connection of the output terminals in series in closed loom form. The illumination units are connected between the secondary output terminals of the output transformer and the output terminal of the other output transformer of counter phase with the output terminal.

Abstract: An object of the present invention is to provide a miniaturized and winding type output transformer suitable for multiple outputs with an excellent efficiency, wherein the I type cores are respectively inserted and disposed in more than two pieces of cylindrical bobbins which are arranged in parallel at a predetermined interval and being mutually coupled, and C type cores are disposed by being piled up in a perpendicular direction relative to the parallel plane at a predetermined interval on the parallel plane of the I type cores, and a magnetic closed circuit is formed by combining the convex portions at both ends of the C type cores to both end portions of the two pieces of the I typecores. Primary windings are mounted on each of the I type cores by means of the bobbins, and secondary windings are mounted in the adjacency of both sides of the primary windings.

Abstract: A small size wound rotor transformer having a simple structure, wherein the primary winding (32) is mounted on the central portion of a bobbin (insulator) (2), and the first and second secondary windings (39, 41) are mounted at both sides of the primary winding (32). The lead wire (39a) of one end of the first secondary winding is connected to the secondary high tension terminal (24) of the first terminal unit (16), and the lead wire (32a) of one end of the primary winding (32) and the lead wire (39b) of an end portion of the winding at the side in contact with the primary winding (32) of the first secondary winding (39) are respectively connected to the corresponding primary input terminal (22) and the ground terminal (20) of the first terminal unit (16).

Abstract: A frame disposed on a rear side of a liquid crystal unit has in a front surface sheet thereof an opening almost the size of the liquid crystal unit, and is constituted so that a translucent optical diffusion sheet is tensely provided on the opening in a thin-box-form. An inverter printed board provided with an inverter circuit and a cold cathode are integrally coupled to this frame directly or indirectly via a retainer to unitize the frame, the inverter circuit and the cold cathode. An electrode lead wire of the cold cathode is connected to a high-voltage output terminal of the inverter circuit. A connector for connection to external wiring is fixed to the inverter printed board or the frame to supply electricity to the inverter circuit via the connector and apply high voltage to an electrode of the cold cathode from the inverter circuit.

Abstract: An object of the present invention is to materilize a small size wound rotor transformer in a simple structure, wherein the primary winding 32 is mounted on the central portion of the bobbin (insulator) 2, and the first and second secondary windings 39, 41 are mounted at both sides of the primary winding 32. The lead wire 39a of one end of the first secondary winding is connected to the secondary high tebtion terminal 24 of the first terminal unit 16, and the lead wire 32a of one end of the primary winding 32 and the lead wire 39b of end poetion of the winding at the side in contact with the primary winding 32 of the first secondary winding 39 are respectively connected to the corresponding primary iuput terminal 22 and the ground terminal 20 of the first terminal unit 16.

Abstract: An object of the present invention is to materialize a small size wound-rotor transformer in a simple structure, wherein the primary winding 32 is mounted on the central portion of the bobbin (insulator) 2, and the first and second secondary windings 39, 41 are mounted at both sides of the primary winding 32. The lead wire 39a of one end of the first secondary winding is connected to the secondary high tension terminal 24 of the first terminal unit 16, and the lead wire 32a of one end of the primary winding 32 and the lead wire 39b of end portion of the winding at the side in contact with the primary winding 32 of the first secondary winding 39 are respectively connected to the corresponding primary input terminal 22 and the ground terminal 20 of the first terminal unit 16.

Abstract: An object of this invention is to enhance insulating properties between the terminals provided at both terminals of the secondary windings of the wound-rotor type transformer, and to drive the wound-rotor transformer safely, and the primary windings 110, secondary windings M1, M2 are mounted on the bobbins inserted with the bobbins. The terminal base 1 is provided at the side where the high tension terminals of the bobbins 102, 104 are disposed, and The first terminals S1, S2, S3 and S4 connected to the one terminals of the primary windings M1, M2 are mounted on the terminal base 1 at the side where the high tension terminals are disposed. The second terminals A, B connected to the other terminals of the secondary windings M1, M2 mounted on the bobbins 102, 104 are mounted at the side where the rearward low tension terminals are disposed at the side where the high tension terminals of the bobbins 102, 104 at a predetermined distance. The second terminals A, B are used as the ground terminals.

Abstract: In case of driving a plurality of lamps with the use of a plurality of output transformers, difference in the brightness of each lamp occurs by a dispersion of characteristics of the output transformers, and an object of this invention is to prevent such troubles. For this purpose, primary side of a plurality of output transformers of 1 input.plural output type are respectively connected, and illumination units are connected to the secondary side of each output transformer. All of the secondary output terminals of each output transformer are connected to the secondary output terminals of counter phase are connected by forming a loop circuit with the connection of the output terminals in series in closed loom form and the illumination units are connected between the secondary output terminals of the output transformer and the output terminal of the other output transformer of counter phase with the output terminal.

Abstract: A frame disposed on the rear side of a liquid crystal unit (2) has in the front surface sheet thereof an opening almost the size of the liquid crystal unit (2), and is constituted so that a translucent optical diffusion sheet is tensely provided on the opening in a thin-box-form. An inverter printed board (14) provided with an inverter circuit (16) and a cold cathode (22) are integrally coupled to this frame directly or indirectly via a retainer to unitize the frame, the inverter circuit (16) and the cold cathode (22). The electrode lead wire of the cold cathode (22) is connected to the high-voltage output terminal of the inverter circuit (16). A connector (20) for connection to an external wiring is fixed to the inverter printed board (14) or the frame to supply electricity to the inverter circuit (16) via the connector (20) and apply high voltage to the electrode of the cold cathode (22) from the inverter circuit (16).

Abstract: An object of the present invention is to materialize a small size wound-rotor transformer in a simple structure, wherein the primary winding 32 is mounted on the central portion of the bobbin (insulator) 2, and the first and second secondary windings 39, 41 are mounted at both sides of the primary winding 32. The lead wire 39a of one end of the first secondary winding is connected to the secondary high tension terminal 24 of the first terminal unit 16, and the lead wire 32a of one end of the primary winding 32 and the lead wire 39b of end portion of the winding at the side in contact with the primary winding 32 of the first secondary winding 39 are respectively connected to the corresponding primary input terminal 22 and the ground terminal 20 of the first terminal unit 16.

Abstract: An object of the present invention is to provide a small size output transformer capable of producing sine wave oscillation at stability and high efficiency. A drive circuit including a switching circuit is connected to DC power source input units 12a, 12b, and an output transformer 10 is connected to the drive circuit. At the drive circuit, the switching circuit is turned on and off on the basis of a feedback signal of the primary side resonance voltage induced in the input side primary winding of the output transformer. The energizing direction of the DC power source to the output transformer is converted in clockwise and counter-clockwise direction by the on and off of the switching circuit, and the power source is applied as the AC signal to the input side primary winding of the output transformer. The phase detecting means detects the phase of the resonance waveform at the primary side of the output transformer 10 and outputs the phase signal.

Abstract: Multiple outputs can be efficiently generated in a piezoelectric transformer by utilizing both surfaces of a piezoelectric member at the primary side, and the piezoelectric member at the primary side is polarized in the direction of thickness or in the direction of length. The piezoelectric members at the secondary side applied with a polarization in the direction of thickness or in the direction of length are laminated on both surfaces of the piezoelectric member at the primary side in the direction of thickness or in the direction of length. When an alternating voltage is applied to the input terminals at the primary side, thickness vertical vibration is generated at the piezoelectric member at the primary side. The vertical wave vibration that propagates in the direction of thickness propagates to the piezoelectric members at the secondary side, and generates an alternating voltage by a piezoelectric positive effect.

Abstract: A high dielectric is fixed to the side of an opening of a casing made from a good electroconductive material or is fixed to the side of an opening of an outer shell made from an insulator such as ferrite, and an antenna element is fixed on the back surface of the high dielectric. A material body, which has a small relative dielectric constant such as air is stored in the casing or the outer shell. The antenna element is sandwiched between the material body having the small relative dielectric constant and the high dielectric. The high dielectric is formed from a material having a relative dielectric constant that is close to the relative dielectric constant of a medium material such as clay, sand, water and the like in the underground or the underwater.

Abstract: A process for preparing an aqueous solution of acrylamide, which comprisescatalytically hydrating acrylonitrile in the presence of a metal-containing catalyst to form a mixed aqueous solution containing about 15 to about 35% by weight of acrylamide and about 0.5 to about 20% by weight of acrylonitrile, andconcentrating the mixed aqueous solution to a high concentration aqueous solution of acrylamide having an acrylonitrile concentration of about 0.1% by weight or less using a centrifugal film evaporator in which a stream of mixed aqueous solution and a stream of evaporated vapor flow countercurrently to each other.