Abstract: A recycled fancy yarn includes at least two core strands forming a warp thread, and at least one ornamental strand that is twined, twisted or wound around the warp thread to form a weft thread. The core strand is formed by a single first monofilament or a single first filament bundle, and the ornamental strand is formed by a single second monofilament or a single second filament bundle. The first monofilament and/or second monofilament is made of an environmentally friendly material; or the recycled fancy yarn can be recycled or naturally decomposed in the environment, such that the quantity of produced wastes can be reduced, and environmental burden is hardly caused.

Abstract: A recycled fancy yarn includes at least two core strands forming a warp thread, and at least one ornamental strand that is twined, twisted or wound around the warp thread to form a weft thread. The core strand is formed by a single first monofilament or a single first filament bundle, and the ornamental strand is formed by a single second monofilament or a single second filament bundle. The first monofilament and/or second monofilament is made of an environmentally friendly material; or the recycled fancy yarn can be recycled or naturally decomposed in the environment, such that the quantity of produced wastes can be reduced, and environmental burden is hardly caused.

Abstract: An electronic ballast includes a converter, an inverter circuit, a controlling unit, and a current crest factor improvement circuit. The controlling unit issues a first control signal to control the converter and issues a second control signal and a third control signal with opposite enabling/disabling states to control on/off states of corresponding switch elements of the inverter circuit. During a dead time between the enabling state of second control signal and the enabling state of the third control signal, these switch elements are simultaneously in the off state. During the dead time, the current crest factor improvement circuit is triggered to generate a restraining signal. According to the restraining signal, an output power of the converter is decreased to a predetermined value in real time or the converter is suspended.

Abstract: An electronic ballast includes a converter, an inverter circuit, a controlling unit, and a current crest factor improvement circuit. The controlling unit issues a first control signal to control the converter and issues a second control signal and a third control signal with opposite enabling/disabling states to control on/off states of corresponding switch elements of the inverter circuit. During a dead time between the enabling state of second control signal and the enabling state of the third control signal, these switch elements are simultaneously in the off state. During the dead time, the current crest factor improvement circuit is triggered to generate a restraining signal. According to the restraining signal, an output power of the converter is decreased to a predetermined value in real time or the converter is suspended.