摘要:
A semiconductor device of the present invention includes a transistor having a drain and a source, a voltage being applied between the drain and the source from a high-voltage power supply, a drive device that generates a source voltage and a gate voltage for the transistor from a voltage of a low-voltage power supply lower than that of the high-voltage power supply, and a voltage dividing circuit connected to the low-voltage power supply, wherein when the source voltage is lower than a certain value, an output voltage from the voltage dividing circuit is applied to the source.
摘要:
A thread winder unit, which is capable of winding thread of spools set on spool bars, is removably attached to a machine body. The sewing machine includes a feed motor for feeding the thread during sewing, an upper thread state detecting sensor disposed between the feed motor and the thread winder unit for detecting tensed thread, and a CPU for controlling thread winding operations based on a signal from the upper thread state detecting sensor. The sewing machine intermittently drives the feed motor in a reverse direction to that in the sewing to feed the thread toward the thread winder unit, every time the upper thread state detecting sensor detects the tensed thread, and the thread winder unit winds the fed thread around the spool. The CPU, recognizing the thread wound by a given amount, stops winding.
摘要:
This invention relates to an electronic sewing machine in which sewing data consisting of the needle sewing positions encoded for each stitch of a predetermined stitch pattern is stored. It comprises at least a memory for storing sewing data consisting of the encoded stitch data in group in regard to the stitches the needle sewing positions of which change regularly and the read out time data which instructs the reading out of the encoded stitch data by the number of times equal to the number of stitches encoded in group. This composition is effective not only in reducing the capacity required for storing stitch data but also shortening the time required to process the stitch data.
摘要:
The lubricating oil pool 11 in the bottom of the shell 1 of a rolling piston refrigerant gas compressor is communicated directly with the space 16 inside the cylindrical piston 4 via a supply passage 10c in a side plate 10. Sufficient clearance is provided between the ends of the piston and the compressor side plates 9, 10 to enable limited communication between the space 16 and the compression and suction chambers 6, 18. The compressor discharge is supplied to the space 7 within the shell, and the resultant differential pressure applied to opposite ends of the supply passage causes a steady flow of oil into the piston interior to properly lubricate the moving parts of the compressor.
摘要:
The number of potentially rupturable brazed refrigerant tubing connections in a refrigeration system is reduced by crimping the check valve 14a directly within a tubing section 14b prior to its bending and assembly, either upstream or downstream of the accumulator/separator 16.
摘要:
1,1,1-Trihalogeno-4-methyl pentenes and 1,1-dihalogeno-4-methyl-1,3-pentadienes are produced. These compounds are of value as intermediates for the production of pyrethrin analogs which are of use as insecticides or agricultural chemicals.
摘要:
A voltage detecting circuit of the present invention is formed of a differential amplifier and an H-detection filter circuit, and the differential amplifier amplifies a potential difference between an input voltage and a primary-side voltage to obtain a differential amplified voltage. The H-detection filter circuit extracts low frequency components of the differential amplified voltage to output a detection voltage. A DC/DC control IC outputs, to a control electrode of a transistor, a PWM signal obtained by shaping a pulse width based on the detection voltage, to thereby control an on/off operation of the transistor.
摘要翻译:本发明的电压检测电路由差分放大器和H检测滤波电路构成,差分放大器放大输入电压与初级侧电压之间的电位差,得到差动放大电压。 H检测滤波器电路提取差分放大电压的低频分量以输出检测电压。 DC / DC控制IC将晶体管的控制电极输出通过基于检测电压对脉冲宽度进行整形而获得的PWM信号,从而控制晶体管的导通/截止操作。
摘要:
A voltage detecting circuit of the present invention is formed of a differential amplifier and an H-detection filter circuit, and the differential amplifier amplifies a potential difference between an input voltage and a primary-side voltage to obtain a differential amplified voltage. The H-detection filter circuit extracts low frequency components of the differential amplified voltage to output a detection voltage. A DC/DC control IC outputs, to a control electrode of a transistor, a PWM signal obtained by shaping a pulse width based on the detection voltage, to thereby control an on/off operation of the transistor.
摘要翻译:本发明的电压检测电路由差分放大器和H检测滤波电路构成,差分放大器放大输入电压与初级侧电压之间的电位差,得到差分放大电压。 H检测滤波器电路提取差分放大电压的低频分量以输出检测电压。 DC / DC控制IC将晶体管的控制电极输出通过基于检测电压对脉冲宽度进行整形而获得的PWM信号,从而控制晶体管的导通/截止操作。
摘要:
A gate circuit includes a gate resistive element connected at one end to the gate of a power device, an on-switching device connected between a power supply and the other end of the gate resistive element, a first resistive element whose connection to the gate is controlled by a first switching device, a second resistive element whose connection to the gate is controlled by a second switching device, and having a higher resistance value than the first resistive element, excessive current suppression means for turning on the first switching device just when the current in the power device reaches a predetermined value, and turn-off delay means for, after the excessive current suppression means turns on the first switching device, turning off the on-switching device and the first switching device and turning on the second switching device to turn off the power device.
摘要:
In a method for delivering a nucleic acid of the invention, a nucleic acid is introduced into a cell by pressing the nucleic acid supported on a surface of a solid substrate against the cell. According to the method, the nucleic acid can be delivered into the cell simply at a low cost without placing a heavy burden on the cell at a high nucleic acid delivery efficiency. By allowing the surface of the solid substrate to support the nucleic acid in the form of a complex with a polyamine or a cationic lipid and pressing it against the cell, the introduction efficiency into the cell can be further improved. In the invention, by using a nucleic acid useful for gene therapy as the nucleic acid, a high-efficiency device for gene therapy can be obtained.