Abstract:
A control circuit of a small night lamp comprises a power circuit having a battery, a solar cell, the battery being installed with a switch for controlling the turning on and off of the power; a sound sensing circuit having a sound pickup, two transistors; the sound pickup serving to sense sounds and then to conduct the transistors; a light circuit having a plurality of LED lights; and a main control circuit having a microprocessor which is connected to the sound sensing circuit and the LED lights; the main control circuit being actuated by the transistors of the sound sensing circuit; when the main control circuit is actuated, all the LED lights lighting up or the LED lights lighting up in turn.
Abstract:
An aquatic motion display toy is constructed to include a hollow holder base, a water pump, a bottom panel, an upper panel, a transparent face panel, and a splasher. The bottom panel, the upper panel, and the face panel are press-fitted into one another, defining a plurality of concentrically disposed annular water accumulation chambers such that water is accumulated in the water accumulation chambers and then forced out of corresponding jet nozzles at the face panel during running of the water pump. LEDs are provided in the upper panel and controlled to emit light toward fallen water during running of the water pump.
Abstract:
A control circuit assembly installed in a fountain display apparatus for controlling the reproduction of music and the formation of artificial springs and a lighting effect subject to the reproduction of music.
Abstract:
A resistance ladder having a plurality of resistance branches in an integrated circuit chip, including a layer of resistive material defining a plurality of discrete linear segments and a plurality of connector tabs extending from each of the linear segments at predetermined intervals for defining each resistance branch: wherein the layer of resistive material further defines a number of curvilinear segments for connecting the linear segments to provide a continuous resistive material layer for defining said resistance ladder. Each curvilinear segment is approximately a segment of a circle. The resistive material layer also defines a plurality of connector tabs extending from each curvilinear segment; with the angular separation of the tabs being approximately defined by.theta.=(R/.rho.)ln(r.sub.2,/r.sub.1),wherein R is the resistance required for each leg of the resistance ladder;.rho. is the sheet resistance of the resistive material;r.sub.1 is the inner radius of said circle; andr.sub.2 is the outer radius of said circle.
Abstract:
A wideband high frequency bandpass filter uses a metamaterial transmission line composed of an open-circuit resonator and a short-circuit resonator to realize a bandpass filter at the band of 60 GHz. The bandpass filter has an ultra-wide passband resulting from the coupling of the two resonators in the resonant modes thereof. The ultra wide passband formed by resonance coupling includes a left-handed passband and a right-handed passband. The two passbands jointly provides a passband ranging from 57.4 GHz to 63.6 GHz and having a bandwidth of 6.2 GHz. The stopbands of the bandpass filter are respectively extended downward from 57.4 GHz to the DC current and extended upward from 63.6 GHz to 109.4 GHz. The bandpass filter of the present invention can be applied to wireless transmission at the band of 60 GHz.
Abstract:
The present invention discloses a device with an automatic de-skew capability, comprising a data signal delay module, a plurality of data registers, and a delay data signal selection module. The present device outputs an optimal delay data signal and a clock signal to a source driver to drive a display panel.
Abstract:
A load driving apparatus is provided. The load driving apparatus is configured to output an electrical signal to a load. The load driving apparatus includes a driver and an average voltage/current detector. The driver receives an input voltage and a control signal. The driver tunes the electrical signal according to the control signal. The average voltage/current detector receives the electrical signal outputted to the load and generates the control signal by comparing the electrical signal and a reference signal.
Abstract:
A gamma-voltage generator is provided to generating a plurality of first gamma voltages and second gamma voltages. At least one of the first gamma voltages generated by DACs of the gamma-voltage generator within a first frame period and at least one of the second gamma voltages generated by the DACs within a second frame period are outputted from a same one of the gamma buffers of the gamma-voltage generator, whereby the transmitted gamma voltages have substantially equal offset. Therefore, the display quality approaches an ideal condition.