Abstract: A four-electrode fluorescent, lamp having four filaments in a fluorescent lamp; each of the filament having two leads for being connected to a positive and a negative electrodes of a power source. A resistor is serially connected between a lead of one selective filament and a lead of another selective filaments. Each of the filaments is controlled by a transistor. A pair of capacitors are used to adjust the switching current of a pair of two transistors. The base of the transistor is connected to a respective diode set through a current limiting resistor. Each of the transistor is connected to a diode set. The four diodes are serially connected as a loop with two ends of the loop being connected to two ends of an AC power source. Thereby, a circuit for an alternative lighting four-electrode fluorescent lamp is formed.

Abstract: A lighting and starting device for two-electrode lamp includes a plurality of voltage-multiplier rectifying circuits parallelly connected to two electrodes of the lamp with stepping voltages, for instance, high, medium and low voltage levels, whereby upon selection of the desired voltage level, the light of the lamp can be adjusted optimumly.

Abstract: A simplified power supply circuit includes: a primary capacitor connected across an anode and a cathode of a rectifier for rectifying an input voltage of high voltage and low current of AC current, a plurality of secondary capacitors connected in series in between a positive pole and a negative pole of the primary capacitor through a positive-pole on-off switch and a negative-pole on-off switch, each secondary capacitor having its positive and negative conductors respectively connected to an output positive terminal and an output negative terminal by an on-off switch circuit, and the secondary capacitors having their output positive and negative terminals connected in parallel for amplifying the low input current (with high voltage) to be a high output current (with low voltage) without using the heavy iron core and winding of a conventional transformer.

Abstract: A power generator includes a fly wheel rotatably driven by a driving device, a plurality of magnetically repulsive magnets circularly disposed in an extension ring annularly formed on the fly wheel, a plurality of shuttle magnets circularly secured in a carrier ring positioned adjacent to the extension ring with the carrier ring rotatably engageable in a guiding-rail ring, and a plurality of coil windings circumferentially wound around the guiding-rail ring, each repulsive magnet having a front pole facing a rear pole of each shuttle magnet and the rear pole of the shuttle magnet having a polarity as same as that of the front pole of the repulsive magnet, whereby upon a rotation of the fly wheel to rotate the extension ring and the plurality of magnetically repulsive magnets secured in the extension ring, the shuttle magnets in the carrier ring will be rotatably repulsed by the magnetically repulsive magnets to induce current flowing through the coil windings wound on the guiding-rail ring for generating powe

Abstract: A shortcircuiting and circuit-breaking alarm includes a Darlington amplifier comprised of two NPN transistors connected in series, a PNP transistor connected to the Darlington amplifier, a first planar or linear conductor connected between a base of a first NPN transistor of the Darlington amplifier and a positive pole of a power source, a second planar or linear conductor connected between the Darlington amplifier and the PNP transistor having an insulator interposed between the first conductor and the second conductor, the first NPN transistor having its base connected to the positive pole of the power source through a resistor of large resistance, and the PNP transistor having its base connected to a negative pole of a power source through a resistor of small resistance, whereby upon a cutting of either the first or the second conductor or a shortcircuiting of the two conductors, the PNP transistor will be conducted to conduct a silicon control rectifier, which is connected to a sounding integrated circuit

Abstract: A detecting and alarming system includes a main alarm circuit provided in a headquarter control center, at least a terminal alarm circuit provided at a local station, and at least a connecting loop conecting the main alarm circuit and each terminal alarm circuit, whereby upon a cutting or a shortcircuiting of the connecting loop between the headquarter control center and the local station, an alarm will be actuated for warning the breaking or shortcircuiting situation.

Abstract: An ignition circuit for fluorescent lamp includes a transformer having coreless windings connected in parallel with a fluorescent lamp with the coreless windings having inductive reactance matched with a capacitive reactance or internal resistance of the fluorescent lamp for forming a harmonic oscillation of a multivibrator in order for stably igniting the fluorescent lamp for saving electric energy.