Abstract: A power adjusting circuit, an LED power supply and an LED luminaire. The power adjusting circuit includes: a zero-crossing detecting unit, adapted to generate a zero-crossing detection signal according to an high-frequency signal, wherein the zero-crossing detection signal is a pulse wave or a square wave, and the high-frequency signal is a sine wave or an AC wave; a signal processing unit, adapted to determine a second number of pulses or square waves of the zero-crossing detection signal corresponding to an adjustment signal that is input externally, according to a first number of pulses or square waves of the zero-crossing detection signal corresponding to a full-load operation of a functional device; a counting unit, adapted to generate a switch control signal according to the first number and the second number; and a switch unit, adapted to control an output of the high-frequency signal according to the switch control signal.

Abstract: A power adjusting circuit, an LED power supply and an LED luminaire. The power adjusting circuit includes: a zero-crossing detecting unit, adapted to generate a zero-crossing detection signal according to an high-frequency signal, wherein the zero-crossing detection signal is a pulse wave or a square wave, and the high-frequency signal is a sine wave or an AC wave; a signal processing unit, adapted to determine a second number of pulses or square waves of the zero-crossing detection signal corresponding to an adjustment signal that is input externally, according to a first number of pulses or square waves of the zero-crossing detection signal corresponding to a full-load operation of a functional device; a counting unit, adapted to generate a switch control signal according to the first number and the second number; and a switch unit, adapted to control an output of the high-frequency signal according to the switch control signal.

Abstract: A connection terminal is provided, including at least one impedance branch circuit, where each impedance branch circuit includes one or more impedance elements and two first conductive connectors, each first conductive connector has a first end and a second end, first ends of the two first conductive connectors are configured to be coupled with a driving power supply and an illumination lamp, and second ends of the two first conductive connectors are configured to be coupled with two ends of the one or more impedance elements. An illumination device is provided, including a driving power supply, an illumination lamp and the connection terminal in the present disclosure, input ends of the driving power supply are coupled with an AC power grid, its out ends are coupled with two ends of the illumination lamp to form a driving circuit, and the connection terminal is connected to the driving circuit.

Abstract: An AC power supply system and a state monitoring circuit for the same, and a power consumption equipment are provided. The state monitoring circuit includes: a monitoring circuitry, configured to monitor current state information of the AC power supply system; and a control circuitry, coupled with the monitoring circuitry and configured to identify a current state of the AC power supply system based on the current state information monitored by the monitoring circuitry, and to determine whether to enable an AC power supply to deliver electrical energy to a power consumption equipment. Safety during an AC power supply process may be improved.