摘要:
Disclosed is a polymer having excellent solvent resistance which can be produced by using a polycarbonate diol having a repeating unit represented by the formula (1) and/or (2), having a hydroxyl group at both termini, and having a number average molecular weight of from 300 to 50,000: wherein R1 represents a linear or branched hydrocarbon group having 2 to 50 carbon atoms; and n represents an integer of 2 to 50, wherein R2 represents a linear or branched hydrocarbon group having 10 to 50 carbon atoms.
摘要:
A photodiode which eliminates sensitivity reduction in a short wavelength region such as blue, an unavoidable problem posed by doping, resolves response reduction by the scattering of acceptor ions or impurities due to doping of impurities at the same time, and has very high sensitivity and fast response in a UV-IR range. A photodiode having a hetero-junction between a semi-insulating zinc oxide semiconductor thin film and silicon and comprising, basically, n-type silicon (1) and a semi-insulating zinc oxide semiconductor thin film (3) formed on the n-type silicon, characterized in that the n-type silicon forms a cathode region, and the formation of a semi-insulating zinc oxide semiconductor thin film produces a p-type inversion layer (4) at the upper portion of the n-type silicon in contact with the semi-insulating zinc oxide semiconductor thin film, the p-type inversion layer forming a photo-detection region and an anode region.
摘要:
Provided are two monitor circuits for monitoring two input signals of an input stage differential amplifier, respectively, and two monitor circuit for monitoring two output signals of the input stage differential amplifier, respectively. When failure occurs at the bridge circuit of a sensor element or at the input stage differential amplifier, the monitoring units or the monitoring units detect abnormality, which makes it possible to detect the failure of the sensor element or the input stage differential amplifier. Therefore it is possible to detect failure such as a disconnection or a short circuit of the bridge circuit of the sensor element and failure which has occurred at the amplifier for amplifying outputs of the sensor element.
摘要:
A power consumption control device for detecting output of a pulse signal from an output terminal of an oscillator as an operation monitoring target and outputting a power consumption reduction signal when the pulse signal is not detected in a predetermined period of time, includes a p-type transistor and an n-type transistor which are connected in series and have a gate to which the output terminal is connected, and detecting means for detecting a through current flowing through the p-type transistor and n-type transistor, and outputs a power consumption reduction signal when the through current is not detected in a predetermined period of time.
摘要:
A multiplexer circuit comprises a plurality of voltage generation circuits which produce corresponding output voltages having respective, different voltage levels in accordance with an ordered sequence thereof, from the lowest to the highest level. The outputs of the plurality of voltage generation circuits are supplied to a common output line. A decoder circuit receives a control data input signal which designates a selected one of the plurality of levels of the output signal and produces a signal for disabling each of the voltage generating circuits having an output voltage level of a higher order than that of the voltage generating circuit producing the output voltage of the selected level designated by the control data input signal. Voltage generating circuits of lower order need not be disabled.
摘要:
A substituted cyclopentanone represented by the following formula (2): (wherein R3 and R4 represent a substituent having 1 to 8 carbon atoms, may be the same as R1 and R2, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1): (wherein R1 and R2 represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.
摘要:
A power supply circuit that withstands voltages greater than or equal to a voltage capacity and prevents an increase in circuit area and manufacturing costs. The power supply circuit includes a first transistor for receiving a DC voltage and generating an internal power supply voltage. A clamp circuit is connected to the first transistor. The clamp circuit is activated when the DC current voltage is an excessive voltage to clamp the internal power supply voltage at a predetermined voltage that is less than the excessive voltage. A gate voltage control circuit is connected to the first transistor and the clamp circuit to supply the gate of the transistor with a control voltage so that the internal power supply voltage decreases when the clamp circuit is activated.
摘要:
Disclosed is a polymer having excellent solvent resistance which can be produced by using a polycarbonate diol having a repeating unit represented by the formula (1) and/or (2), having a hydroxyl group at both termini, and having a number average molecular weight of from 300 to 50,000: wherein R1 represents a linear or branched hydrocarbon group having 2 to 50 carbon atoms; and n represents an integer of 2 to 50, wherein R2 represents a linear or branched hydrocarbon group having 10 to 50 carbon atoms.
摘要:
A substituted cyclopentanone represented by the following formula (2): (wherein R3 and R4 represent a substituent having 1 to 8 carbon atoms, may be the same as R1 and R2, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1): (wherein R1 and R2 represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.