摘要:
A Digital Phase Comparator has a simplified logic circuit in which Nand Circuits provide UP and DOWN signals containing phase information about E and F signals.
摘要:
An integrated oscillation circuit used for frequency conversion circuit in which UHF frequency conversion and VHF frequency conversion are selectively energized to use a common IF amplifier. The integrated oscillation circuit is used for a local oscillation circuit. The integrated oscillation circuit including a connection terminal connected to an external resonance circuit and an input line of a mode switching signal which is set at a different level in response to an operation mode, an oscillation element, a bias terminal of which is connected to the connection terminal, a detection circuit detecting the level of the mode switching signal applied to the bias terminal of the oscillation element, and a switching circuit turning on and off a power source for driving the oscillation element in response to the level detected at the detection circuit.
摘要:
A buffer circuit includes a main buffer circuit section formed of a pair of complementary input side transistors the bases of which are connected together to an input, a dummy circuit section having the same circuit construction as the main buffer circuit section, and a feedback signal section compares the output from the dummy circuit section with a predetermined value to provide a feedback signal which is supplied to the dummy circuit section and the main buffer circuit section so as to make the output of the dummy circuit section equal to that predetermined value.
摘要:
The following oligopeptides containing -Asp-Gly- or -Asp-Ser- are synthesized:H-Asp-Gly-Lys-OHH-Ser-Asp-Gly-Lys-OHH-Asp-Ser-Asp-Gly-Lys-OHH-Ala-Asp-Ser-Asp-Gly-Lys-OHThe oligopeptides have antiallergic, vasodilating and immunoregulating activities and are very useful for treating allergic symptoms.
摘要:
A reclining device for a seat comprises a base plate secured to a seat cushion; and a pivotal plate pivotally connected through a center shaft to the base plate and secured to a seatback. The base plate has a guide portion which faces the pivotal plate. A toothed member is movably guided by the guide portion. The toothed member has a first toothed portion. A cam member is movably guided by the guide portion of the base plate. The cam member moves the toothed member in a first direction when moved in one direction and moves the toothed member in a second direction when moved in the other direction. The pivotal plate has a recess which faces the guide portion of the base plate. The recess has a second toothed portion to which the first toothed portion is engaged when the toothed member is moved in the first direction. An operation lever is pivotally connected through the center shaft to the base plate. A mechanism is used for moving the cam member in the one and the other directions when the operation lever is manipulated.
摘要:
A process for preparing a purified syphilis antigen which comprises adsorbing an extract originated from Treponemda pallidum on a hydroxyapatite gel, followed by elution, while an aqueous medium is used.
摘要:
A sample and hold circuit is disclosed, in which first and second terminals to which are supplied drive currents for turning ON and OFF a diode bridge are respectively connected through capacitors to a connection point between output electrodes of switching elements, a diode is connected between the first and second terminals for short-circuiting the capacitors when the diode bridge is made OFF, and input electrodes of the switching elements are respectively connected to first and second points of a reference potential whereby said diode bridge is made ON by a drive current flowing from the first point to the second point of the reference potential.
摘要:
A system to easily detect defective portions of a transmission line in a short time, wherein the optical signal which has been generated on the basis of the transmission pulse which is outputted in synchronization with the horizontal synchronized signal is transmitted via the transmission line, and the reflected-light component which has been reflected by the defective portion in the transmission line is received, and the gain of the reflected-light component is increased by one step for each predetermined number of a horizontal lines on the basis of the horizontal synchronized signal and then compared with the reference voltage, so that the binary data is obtained. The binary data is displayed, along with the axis of the abscissa which represents the distance of the transmission line corresponding to the time difference between the optical signal and the reflected-light component, and the axis of the ordinate which represents the signal level of the reflected-light component.
摘要:
An RF modulator comprising an FM modulator supplied with an audio signal, and AM modulator supplied with the FM modulator output and a video signal, an oscillator for generating a sound subcarrier signal, and an oscillator for generating a main carrier signal. Each of the oscillators consists of a VCO with a PLL circuit, and the entire components are composed of a single IC chip so as to be formed into a compact miniature structure. A modified RF modulator includes a PLL circuit for varying the oscillation frequency of a VCO by a variable frequency divider, and a modulation circuit supplied with a modulating signal and the oscillation output of the VCO. The division ratio (integer) of the variable frequency divider is continuously varied, and the reference frequency of a reference oscillator is set to be less than a predetermined channel interval frequency, thereby reducing the frequency error in the modulated signal output.
摘要:
In the refrigerator according to the present invention, the driving motor is provided outside of the refrigerator and hence the heat load of the freezing cycle can be decreased by the value corresponding to the value of heat which would be generated by the driving motor provided inside of the refrigerator, thereby reducing the time of cooling operation. Additionally, a bush is used to block the gap around the driving shaft penetrating into the refrigerator and hence a complete shut-off is established between the interior and the exterior of the refrigerator. Since the driving motor is housed in a completely sealed housing so that construction of the driving motor free from lock troubles is available. In addition, in the case of construction wherein a liquid polyurethane is filled in the insulated wall of the refrigerator for foam-forming therein, leakage of the liquid polyurethane can be fully prevented.