摘要:
A drive circuit of a fan motor is provided. In an embodiment of the drive circuit, a first PWM comparator compares a temperature detection voltage with a cyclic voltage, and outputs a first PWM signal. A second PWM comparator compares a minimum frequency setting voltage indicating a minimum frequency of the fan motor, with the cyclic voltage, and outputs a second PWM signal. The drive circuit combines the first PWM signal and the second PWM signal by a logical operation, to drive the fan motor. The drive circuit includes a first logic gate which generates a logical sum of the first PWM signal and the second PWM signal, and a second logic gate which generates a logical product of the first PWM signal and an inverted signal of the second PWM signal. The drive circuit switches drive mode based on the first logic gate and the second logic gate.
摘要:
A light emitting device has a light emitting element and an adhesion layer to bond the light emitting element to a mounting member. The adhesion layer is of inorganic material particles and a transparent inorganic binding layer to be formed between the neighboring inorganic material particles, and the inorganic material particles are substantially connected with each other in the adhesion layer. Another light emitting device has a light emitting element and a phosphor layer that radiates fluorescent light while being excited by light emitted from the light emitting element. The phosphor layer is of phosphor particles and transparent inorganic binding layer to be formed between the neighboring phosphor particles.
摘要:
A cell module for a fuel cell according to embodiments of the invention includes a hollow-core electrolyte membrane; two electrodes one of which is arranged on the inner face of the hollow-core electrolyte membrane and the other of which is arranged on the outer face of the hollow-core electrolyte membrane; and first collecting members that are connected to the respective two electrodes. At least one of the two electrodes includes nano-columnar bodies on which electrode catalysts are supported. The nano-columnar bodies are formed on at least one of the first collecting members corresponding to the at least one of the electrodes that includes the nano-columnar bodies. At least part of the nano-columnar bodies are oriented toward the hollow-core electrolyte membrane.
摘要:
A start signal output circuit having an RF/DC conversion circuit to which radio frequency power (RF) of specified frequency is inputted and from which a direct current potential (DC) is outputted, comprises a detection/amplification circuit 210 which includes a voltage doubler wave-detector circuit 10 configured including a sensing diode Q1 (Tr34) for sensing the RF power, a differential amplifier including differential pair transistors Tr31 and Tr32, and a current mirror circuit. A base current of one Tr31 of the differential pair transistors is brought into substantial agreement with a DC component of a current flowing through the sensing diode Q1 (Tr34). A total of currents flowing through the differential pair transistors Tr31 and Tr32 is regulated to a substantially constant value by the current mirror circuit. Thus, the start signal output circuit which is small in size, high in sensitivity and low in power consumption can be realized.
摘要:
A start signal outputting circuit according to the invention has a differential RF/DC convertor part 100 for converting a high frequency power (RF) into a d.c. potential (DC). The RF/DC convertor part 100 is formed by two transistors QRD,QDD working as a diode, and transistors QR1˜R3,QD1˜D3 and resistances RR1˜R3 for forming high resistances at anode sides andcathodesidesofthesediodes, respectively. Adifferential amplification part 200 disposed at a later stage of the diode has not only amplifying effect but also low-pass filtering effect together with filtering pars 120, 210 of its previous and later stages. In this case, it is designed so that current flowing through the respective circuits is about 2˜3 μA. As a result, even if the high frequency power of the specified frequency is weak, for example −60˜−40 dBm, a start signal outputting circuit 1000 which outputs a d.c. potential of 0.3˜2.4V, is suitable for integration and has a low power consumption can be obtained.
摘要:
A thermal printhead (1) comprises a substrate (2), an electrode pattern (3) formed on the substrate, including a common electrode and a plurality of individual electrodes, a heating resister (5)connected to the electrode pattern (3), and a protective coating (8) including a plurality of layers (81, 82, 83, 84) covering the electrode pattern (3) and the heating resister (5). The protective coating includes an outermost layer (84) composed mainly of SiC and an admixture of carbon.
摘要:
The thermal printhead (1) includes an insulating substrate (2), a heating resister (5) formed on the substrate (2), a first glass coat layer (7) formed on the substrate (2) for covering the heating resister (5), and a second glass coat layer (8) formed on the first glass coat layer (7). The heating resister (5) has a centerline average roughness not greater than 0.3 &mgr;m. The first glass coat layer (7) has a centerline average roughness not greater than 0.1 &mgr;m.
摘要:
In an apparatus for selectively reduction-removing nitrogen oxides in exhaust gas in presence of catalyst by spraying aqueous solid reducing agent solution into exhaust gas flowing through a duct to mix the reducing agent into exhaust gas, the present invention prevents nozzle-clogging caused by the reducing agent or its reaction product, permits stable and continuous spraying and uniform mixing of the reducing agent solution into exhaust gas, and thus removes nitrogen oxides at a high efficiency. The nozzle is cooled by supplying at least one of water and gas before supplying the solution into the nozzle. Upon discontinuing supply of the solution to the nozzle, at least one of water and gas is supplied to remove the solution remaining in the nozzle. The solution stored at high concentration is sprayed after diluting it with water in the course of transfer for spraying. A line for supplying water for diluting is added to the line for supplying the solution. On the side peripheral surface of the duct, a nozzle having double-tube structure comprising an inner and an outer tube in which the inner tube tip projects by 1 to 5 mm from the outer tube tip is installed, the solution is supplied into the nozzle inner tube and spray gas is supplied between the inner and outer tubes to spray the solution to exhaust gas.