Abstract: The present invention provides a binder-free process for preparing a photoanode of flexible dye-sensitized solar cell, comprising: (a) preparing a TiO2 suspension fluid comprising TiO2, acetylacetone and anhydrous ethanol; (b) preparing a charge solution comprising iodine, ketone and deionized water; (c) mixing said TiO2 suspension fluid and said charge solution to obtain an electrophoresis suspension; (d) soaking a substrate and a cathode into the electrophoresis suspension and proceeding electrophoresis to obtain an TiO2 deposited substrate, in which said substrate and said cathode are flexible; (e) heating the TiO2 deposited substrate; and (f) compressing the heated TiO2 substrate to obtain the photoanode.

Abstract: The present invention provides a flexible dye-sensitized solar cell, comprising: an anode, which is a photoelectrode comprising a substrate covered with an electrophoretically deposited TiO2 film; a cathode; and a gel-electrolyte. Particularly, the present invention provides a solar cell comprising a photoanode prepared by the following steps: (a) preparing a TiO2 suspension fluid comprising TiO2, acetylacetone and anhydrous ethanol; (b) preparing a charge solution comprising iodine, ketone and deionized water; (c) mixing said TiO2 suspension fluid and said charge solution to obtain an electrophoresis suspension; (d) soaking a substrate and a cathode into the electrophoresis suspension and proceeding electrophoresis to obtain an TiO2 deposited substrate, in which said substrate and said cathode are flexible; (e) heating the TiO2 deposited substrate; and (f) compressing the heated TiO2 substrate to obtain the photoanode.

Abstract: The present invention is related to a jaw clip. The jaw clip comprises a first jaw unit, a second jaw unit and a pivot. The first jaw unit contains a first base part, pluralities of first expanding parts and pluralities of first jointing parts thereof. Each of first expanding part has pluralities of pillars disposed in line coincident with axial direction of the first expanding part. Each of first jointing part has pluralities of holes disposed in line coincident with axial direction of the first jointing part. Each of pillar disposes in a hole, so that first expanding part may rotate relative to first jointing part. The second jaw unit contains a second base part, pluralities of second expanding parts and pluralities of second jointing parts thereof. The pivot pivotally connects the first base part and the second base part, so that the first jaw unit may rotate relative to the second jaw unit.

Abstract: A bootstrap circuit is utilized in a bulk circuit using an NMOS transistor as a power switch. The bootstrap circuit includes a first PMOS transistor coupled between an internal power source and an offset capacitor, and a second PMOS transistor coupled between the gate of the first PMOS transistor and the offset capacitor, and an NMOS transistor coupled between the gate of the first PMOS transistor and ground. When the power switch is turned on, the second PMOS transistor is turned on for turning off the first PMOS transistor. When the power switch is turned off, the NMOS transistor is turned on for turning on the first PMOS transistor.

Abstract: A short-circuit detection method provides a dimmer signal for driving a light source and a feedback signal which varies according to the voltage drop across the light source. When the voltage level of the feedback signal is below a reference voltage, a high-level compare signal is provided. When the voltage level of the feedback signal is above the reference voltage, a low-level compare signal is provided. When the dimmer signal is at high level and the compare signal is at low level, a high-level count signal is provided. When the count signal has switched to high level more than a predetermined number of times, a short-circuit signal is outputted.

Abstract: A bootstrap circuit is utilized in a bulk circuit using an NMOS transistor as a power switch. The bootstrap circuit includes a first PMOS transistor coupled between an internal power source and an offset capacitor, and a second PMOS transistor coupled between the gate of the first PMOS transistor and the offset capacitor, and an NMOS transistor coupled between the gate of the first PMOS transistor and ground. When the power switch is turned on, the second PMOS transistor is turned on for turning off the first PMOS transistor. When the power switch is turned off, the NMOS transistor is turned on for turning on the first PMOS transistor.

Abstract: A voltage reference circuit includes an operational amplifier, an output P-type MOS transistor, a first resistor, a first BJT, a second BJT, a third resistor, and a plurality of output resistors connected in series. A gate of the output P-type MOS transistor is electrically connected to an output end of the operational amplifier, and a drain of the output P-type MOS transistor is electrically connected to a voltage source. The gate of the output P-type MOS transistor is controlled by the output end of the operational amplifier, so that the drain current of the output P-type MOS transistor can match the current of the first resistor, the third resistor, and the plurality of output resistors connected in series.

Abstract: The circuit for detecting the maximal frequency of the pulse frequency modulation includes an oscillator-controlling unit, a delay circuit and a master-slave register. The oscillator-controlling unit is connected to an oscillator, which generates the pulse frequency modulation signals, and includes a first-half pulse-generating module and a second-half pulse-generating module. The delay circuit is connected to the second-half pulse-generating module. The master-slave register includes a clock, an input end and an output end, wherein the input end is connected to the oscillator-controlling unit, and the clock is connected to the delay circuit.

Abstract: The switching method between pulse frequency modulation and pulse width modulation signals is first based on an output voltage of a power transistor to generate a corresponding pulse frequency modulation signal. Next, it is determined whether the corresponding pulse frequency modulation signal has reached its maximal frequency. If so, the initial pulse width modulation signal is adjusted to have the same width as the pulse frequency modulation signal. Thereafter, the adjusted pulse width modulation signal is outputted.

Abstract: The switching method between pulse frequency modulation and pulse width modulation signals is first based on an output voltage of a power transistor to generate a corresponding pulse frequency modulation signal. Next, it is determined whether the corresponding pulse frequency modulation signal has reached its maximal frequency. If so, the initial pulse width modulation signal is adjusted to have the same width as the pulse frequency modulation signal. Thereafter, the adjusted pulse width modulation signal is outputted.

Abstract: The circuit for detecting the maximal frequency of the pulse frequency modulation includes an oscillator-controlling unit, a delay circuit and a master-slave register. The oscillator-controlling unit is connected to an oscillator, which generates the pulse frequency modulation signals, and includes a first-half pulse-generating module and a second-half pulse-generating module. The delay circuit is connected to the second-half pulse-generating module. The master-slave register includes a clock, an input end and an output end, wherein the input end is connected to the oscillator-controlling unit, and the clock is connected to the delay circuit.

Abstract: A medical chair includes a main frame, an adjusting assembly pivotally mounted on the main frame, and a driving member pivotally mounted on the main frame and connected to the adjusting assembly to move the adjusting assembly. Thus, the first connecting member, the second connecting member and the third connecting member are moved by the adjusting assembly to move the head cushion, the seat cushion and the leg cushion, so that the head cushion, the seat cushion and the leg cushion are moved synchronously by operation of the adjusting assembly, thereby facilitating a user adjusting the state of the medical chair.