摘要:
An illumination system includes: a signal receiver device configured to, in response to a coupling signal, generate a receiver-side signal frame including a control code portion based on control information of the coupling signal; a code extracting unit operable to extract the control code portion from the receiver-side signal frame; and a current providing unit operable to provide a driving current through a light emitting component according to the control code portion extracted from the code extracting unit. The driving current has a magnitude dependent on the extracted control code portion.
摘要:
A light emitting system includes: first, second, and reference light emitting components having first, second, and reference forward voltages when driven under constant current, respectively; an instrumentation amplifier for generating a temperature detection voltage with a magnitude dependent on the reference forward voltage of the reference light emitting component; first and second compensation voltage modules each generating a respective one of first and second compensation voltages based at least on the temperature detection voltage; and first and second power control modules providing first and second driving currents through the first and second light emitting components according to the first and second compensation voltages and the first and second forward voltages, respectively.
摘要:
A light emitting system includes: a voltage detecting unit connected across a solid-state light emitting component for detecting a forward voltage thereof and generating a detection voltage having a magnitude dependent on the forward voltage; a current control unit connected to the light emitting component for controlling, according to a compensation voltage, flow of an operating current, which has a magnitude dependent on the compensation voltage, therethrough; and a compensation voltage module connected to the voltage detecting unit and the current control unit, disposed to receive a reference voltage, and configured to generate the compensation voltage, which varies according to the forward voltage, for provision to the current control unit according to the detection voltage, an operating voltage having a magnitude dependent on the operating current, and the reference voltage.
摘要:
A loop connector and a cable lock having the loop connector are provided. The cable lock includes a cable, a lock body, and the loop connector. The lock body has a lock unit and a restricting unit. The lock unit can restrict or release the restricting unit to allow the restricting unit to movably restrict or release the cable. The cable thereby extends or retracts in this manner. The loop connector has a connector body that includes a first through hole and a second through hole. The first through hole and the second through hole are adjacent to each other, wherein the normal direction of the cross section of the first through hole is perpendicular to the normal direction of the cross section of the second through hole. When the cable passing through the lock body passes through the loop connector, the cable forms a plurality of loops at the lock body with the loop connector and the lock body to secure and protect one or more articles from being stolen.
摘要:
A feedback power control system includes: a multiplying unit receiving a work voltage corresponding to a voltage drop of an electrical component, and a feedback voltage corresponding to a work current flowing through the electrical component, and outputting a measuring voltage corresponding to a consumed power of the electrical component and having a value equal to a product of a value of the work voltage and a value of the feedback voltage; a control unit receiving the measuring voltage from the multiplying unit, and a reference voltage, and outputting a control voltage corresponding to a voltage difference between the measuring voltage and the reference voltage; and a regulating unit providing the feedback voltage to the multiplying unit, and including an amplifier that receives the feedback voltage from a series connection of transistor and a resistor coupled to the electrical component, and the control voltage from the control unit and that controls operation of the transistor.
摘要:
A sun visor for-automobiles includes a frame having a first circular opening and a second circular opening concentric with the first circular opening, a first lens fixedly mounted in the first circular opening, an adjust wheel rotatably fitted within the second circular opening, a second lens fixedly mounted in the adjust wheel, and control means for driving the adjusting wheel, whereby the amount of light transmitted through the sunshield can be adjusted as desired.
摘要:
A light emitting system includes: a voltage detecting unit connected across a solid-state light emitting component for detecting a forward voltage thereof and generating a detection voltage having a magnitude dependent on the forward voltage; a current control unit connected to the light emitting component for controlling, according to a compensation voltage, flow of an operating current, which has a magnitude dependent on the compensation voltage, therethrough; and a compensation voltage module connected to the voltage detecting unit and the current control unit, disposed to receive a reference voltage, and configured to generate the compensation voltage, which varies according to the forward voltage, for provision to the current control unit according to the detection voltage, an operating voltage having a magnitude dependent on the operating current, and the reference voltage.