Abstract:
A method for detecting operations of a power storage device is disclosed. The power storage device includes an electricity storage unit for storing power output from an electronic device or outputting power to the electronic device. The method includes detecting current between the electricity storage unit and the electronic device to determine whether the electricity storage unit is malfunctioned and causes short circuit, and generating an alarm signal when the electricity storage unit is malfunctioned and causes short circuit.
Abstract:
A method for detecting operations of a power storage device is disclosed. The power storage device includes an electricity storage unit for storing power output from an electronic device or outputting power to the electronic device. The method includes detecting current between the electricity storage unit and the electronic device to determine whether the electricity storage unit is malfunctioned and causes short circuit, and generating an alarm signal when the electricity storage unit is malfunctioned and causes short circuit.
Abstract:
A power supply system for a wireless control device includes a plurality of power generation units for generating electric power, a power output unit coupled to the plurality of power generation units and a system circuit of the wireless control device for outputting electric power generated by the plurality of power generation units to the system circuit, and a microprocessor coupled to the plurality of power generation units for controlling the plurality of power generation units.
Abstract:
A wireless power transmission device includes a main body, a first position-limiting bulge, a second position-limiting bulge, and a closed transmitter coil. The first position-limiting bulge and the second position-limiting bulge are disposed within the main body. A space is defined between the first position-limiting bulge and the second position-limiting bulge. The closed transmitter coil is penetrated through the space. The two sides of the closed transmitter coil are respectively in contact with the first position-limiting bulge and the second position-limiting bulge, so that the closed transmitter coil is shaped as a dumbbell. Since the closed transmitter coil is shaped as a dumbbell, the magnetic flux can be uniformly generated by the electromagnetic effect when the closed transmitter coil is magnetized. Under this circumstance, the wireless charging efficiency is enhanced.
Abstract:
An equalizer for compensating an input signal in a receiver of a communication system is disclosed. The equalizer includes a first transistor, having a gate for receiving a positive input voltage of the input signal; a second transistor, having a gate for receiving a negative input voltage of the input signal, and a source coupled to a source of the first transistor; and a resistor, connected with at least one capacitor to be coupled between a drain of the first transistor and a drain of the second transistor, for optimizing a resistance of the resistor, to compensate the input signal.
Abstract:
A warning system for barriers of highways comprises a plurality of barrier plates erected on two sides of roads in a different distance arrangement, and each including an optical fiber and a power line for network connection and communication connected therewith, and including a plurality of LED warning lights and LED illumination lights attached thereon; a number of electric control boxes affixed onto the barrier plates in a different distance arrangement, and each electrically connecting with the optical fiber and the power line for controllably changing warning and illuminating signs of the LED warning lights and the LED illumination lights; a plurality of solar energy devices matching with the electrical control boxes for absorbing and storing solar energy to supply power in the night or in electricity shortage; multiple monitor stations severing to monitor the electrical control boxes for controlling the LED warning lights of the barrier plates to change warning signs.
Abstract:
An operational amplifier includes a first stage and a second stage, the first stage for receiving two input signals and the second stage being coupled to the first stage, wherein the second stage includes a first part with a first output of the operational amplifier, and a second part with a second output of the operational amplifier. A method includes providing a first current to the first part of the second stage, and providing a second current to the second part of the second stage. The method further includes adjusting the first current based on a current consumption of the first part of the second stage, and adjusting the second current based on a current consumption of the second part of the second stage, wherein the sum of the first current and the second current is substantially constant.
Abstract:
An azulene compound is provided. The azulene compound has formula (I) shown below. Each variable in formula (I) is defined in the specification. One of R1, R2, R3, R4, R5, R6, R7, and R8 in formula (I) is a moiety of formula (II). The compound can be used to treat cancer.
Abstract:
The present invention provides a method for preparing an antiulcer agent, 2-(2-pyridylmethylsulphinyl)benzimidazoles, such as Omeprazole, Lansoprazole and Pantoprazole, which includes oxidizing an intermediate having a linkage of methylthio group (—CH2S—) to methylsulfinyl (—CH2S(O)—) in the presence of an oxidation catalyst of acetyl acetonate of molybdenium (II) [(CH3C(O)CH2C(O)CH2)2Mo].
Abstract:
A frequency synthesizer with automatic calibration includes a voltage-controlled oscillator, which has several working bands for receiving a coarse-tuned signal and a fine-tuned signal and generating an output signal in the working band of the coarse-tuned signals; preliminary frequency divider unit, which receives the output signal and generates an intermediate signal by frequency dividing; a feedback frequency divider unit, which receives the intermediate signal and generates a feedback signal by frequency dividing; an automatic calibration unit, which receives the input signal and the intermediate signal to generate a coarse-tuned signal; a phase-frequency comparator, which compares the input signal with the feedback signal and generates an error signal according to the frequency and phase differences between the input signal and the feedback signal; and a low-pass filter, which filters the error signal and generates a fine-tuned signal.