Abstract: An audible sound of modulated wave where a very low-frequency wave of about 20 hertz or lower is superposed on an audio low-frequency wave effectively stimulates Fm theta in human brain waves to improve attention and concentration during mental tasks when auditorily administered. The audible sound is also effective in stimulation of human alpha wave when the very low-frequency wave lies within the range of about 2-10 hertz. Such audible sound is artificially obtainable by generating an electric signal which contains such a modulated wave, and transducing it into audible sound wave.

Abstract: The present invention is to provide means to attain an improved current efficiency and a stabilized operation even when used to generate high-power magnetic pulses at shortened pulse intervals. The objective is attainable with an apparatus to generate magnetism, comprising a plurality of magnetism-generating circuits which are cascaded each other, each magnetism-generating circuit containing a coil member to generate magnetism and a capacitor to provisionally store the current across said coil member; and a conduction-controlling circuit which is to operate the magnetism-generating circuits in a prescribed order.

Abstract: A hammer-like tool for relieving stiffness in the neck and shoulder with an improved therapeutic and prophylactic effect. A cylindrical space is provided in the head of the hammer-like tool, a free-flowing magnet provided in the cylindrical space, an induction coil provided near the periphery of the cylindrical space to surround it, a load coil provided near the face of the hammer-like tool, and a high-frequency oscillator circuit. The load coil generates a high-frequency electromagnetic wave by supplying an electromotive force to the load coil via the high-frequency oscillator when the magnet moves within the cylindrical space.

Abstract: Disclosed is a novel luminaire wherein a switching power supply circuitry is used to operate one or more incandescent lamps at a dc voltage exceeding their rating. The luminaire emits a flickerless light with a color temperature of about 2,900 K. or higher which is natural, closer to sunlight, superior in color rendering properties, gentle to the eyes, therefore very useful in illumination. The switching power supply circuitry exhibits a high power efficiency and capacity, and the output voltage is easily regulatable to a desired magnitude for lamp dimming.

Abstract: A circuit to limit surges into dc-illuminated lamp, including a rectifier circuit having a smoothing means, an output terminal of the rectifier circuit being connected with a lamp; an inductor connected with an input terminal of the rectifier circuit: a surge-limiting means connected in series with its lamp: and a switching means having the main current path connected in parallel with the surge-limiting means, said switching means becoming conductive when the filament of the lamp is warmed up.

Abstract: The disclosure relates to an improvement of a sealed variable resistor including a variable resistor and an arm member attached to a shaft of the variable resistor enclosed in a sealing container, and rotatably supporting a dial knob about a shaft outside the sealing container such that when the dial knob is energized, the arm member moves in association by virtue of magnetic force. The reliability and operability of such a sealed variable resistor are extremely improved by forming the arm member and dial knob into a circular plate, and attaching to the arm member and dial knob at least two magnet pairs apart from each other. These render the sealed variable resistor very useful in various electrical devices which may be exposed to moisture when in use.

Abstract: A novel low-frequency electrotherapeutic device wherein a low-frequency voltage having a ratio of positive voltage component to negative voltage component in the range of about 0.1:1-0.5:1 is used. The electrotherapeutic device can be advantageously used to massage human body or to iontophorese medicament thereinto without causing unwanted discomforts such as pain, inflammation and burning which are inevitable in conventional low-frequency electrotherapy.

Abstract: Disclosed is a novel lighting device comprising a power source capable of supplying to an argon lamp a voltage exceeding its rating, and an argon lamp connected with an output terminal of said power source. Argon lamp emits a natural light when lighted by energizing a voltage exceeding the rating. Such a light has superior color rendering properties, as well as a color temperature of about 2,900.degree. K. or higher which is very close to that of that of early morning sunlight. Thus, the lighting device is advantageously used in luminares in general.

Abstract: A novel lighting equipment for providing bright illumination with limited surge, including a capacitor connected in parallel with an incandescent lamp, the capacitor having a capacitive reactance lower than the resistance of the filament at ambient temperature; an impedance having a time constant connected between the capacitor and an ac source; and means for rectifying the current from the ac source.

Abstract: A device for low-frequency electrotherapy wherein the output current of a low-frequency oscillator is applied to the subject's body through a pair of electrodes placed on the subject's body, comprising a first oscillator circuit that generates a low-frequency square wave voltage when the load is in connection with the electrode pair; and a second oscillator circuit that generates a therapeutic voltage when the output voltage of the first oscillator circuit is not zero.

Abstract: Disclosed is a novel device for low-frequency electrotherapy wherein a moisture proof variable resistor is used to control the output level of a low-frequency diphasic action potential circuit. The diphasic circuit produces a voltage having a pulse width of 0.1 to 10 seconds and a frequency off 10 to 300 Hertz superimposed on the voltage having a pulse interval of 0.1 to 10 seconds.

Abstract: Disclosed is a novel lamp-lighting device, comprising a full-wave rectifier composed partially or entirely of thyristor(s), said full-wave rectifier having both an input terminal connected with an ac source and an output terminal connected with a lamp; a smoothing means connected in parallel with the lamp; means to detect a voltage across the lamp that exceeds a prescribed level; and means to control the conduction angle of the thyristor(s) dependently on the magnitude of the voltage, said controlling means being operable in association with said detecting means.

Abstract: Disclosed is a novel lamp-lighting device, comprising a full-wave rectifier having both an input terminal connected with an ac source and an output terminal connected with a lamp, a smoothing means connected in parallel with the lamp, means to detect a voltage across the lamp that exceeds a prescribed level, means to switch the operation of said rectifier to half-wave rectification mode, and means to connect said switching means with said detecting means.

Abstract: An output controller for an electrotherapeutic device directed for use in a bath, comprising a container having an oscillator that generates a low-frequency therapeutic voltage; and a variable resistor used as the output controller for said oscillator, said variable resistor being enclosed in said container in such manner that the rotary shaft projects outwardly through a bearing and the periphery is elastically and airtightly held in the bearing projection.

Abstract: Disclosed is a novel switching circuit directed to use for limiting surge into lamp, comprising a diode circuit wherein two sets of diodes are connected in reverse-parallel; a resistive element connected in series with a lamp to limit the switch-on surge thereinto; a bidirectionally conductive element having a main current path connected in seried with an ac source through said resistive element, diode circuit and lamp; and a timing circuit having a time constant, said timing circuit triggering said bidirectionally conductive element with the voltage across said diode circuit to short-circuit said resistive element after a lapse of said time constant from switch-on.

Abstract: A low-frequency treatment device directed to use in bath, comprising a pair of electrodes; a switching transistor; a battery connected in series with the pair of electrodes and a main current path of said switching transistor; and means for oscillating a surged treatment wave at a prescribed time interval, the output terminal being connected with the base of said switching transistor to control its conduction.

Abstract: Frequency reduction in human brain wave is inducible by allowing human brain to perceive 4-16 hertz beat sound. Such beat sound can be easily produced with an apparatus, comprising at least one sound source generating a set of low-frequency signals different each other in frequency by 4-16 hertz. Electroencephalographic study revealed that the beat sound is effective to reduce beta-rhythm into alpha-rhythm, as well as to retain alpha-rhythm.

Abstract: Disclosed is a novel controller for electric devices directed to use in bath, comprising a moisture- and waterproof container that encloses the main part of an electric device; a magnet movably provided outside the container; a switch means provided inside the container, the switch means being operable by moving a movable piece; and a magnetic body equipped to the movable piece in correspondence with the moving route of the magnet.

Abstract: Disclosed is a device for limiting the inrush current in a lamp, comprising a resistor means to limit the inrush current that may arise in a lamp, the resistor means being connected in series with the lamp and power source; a controlled rectifier (main controlled rectifier) having the main currrent path connected in parallel with the resistor means; another controlled rectifier (secondary controlled rectifier) having the main current path connected with the gate of the main controlled rectifier; and a delay circuit (e.g. RC-time constant circuit) having the output connected with the gate of the secondary controlled rectifier in such manner that the power source energizes the lamp through the resistor means over the time as predetermined by the time constant of the delay circuit.

Abstract: Disclosed is a novel switch for iontophoresing cation and anion, comprising an on/off switch for power circuit; a selector switch for reversing the output current from an iontophoretic low-frequency oscillator; and a rotary member actuating said on/off- and selector-switches when turned.