摘要:
Provided is a compact casting apparatus capable of producing a high-quality casted product. While the internal pressures of a mold and a hopper are directly reduced by depressurizing means through a pipe and a branch pipe, the mold and the hopper are gradually tilted to fill the mold with a molten metal accommodated in the hopper. After the filling is completed, an open-close gate closes a runner. The molten metal is solidified with only the mold being directly pressured by pressurizing means through the pipe.
摘要:
A camera includes a flange back adjusting mechanism in which the operation of the flange back adjusting mechanism is not obstructed, and the flange back adjustment is easily performed. A flange back adjusting mechanism which moves and adjusts a CCD in the direction of the optical axis can be operated by an operation section which protrudes to the outside of a case portion through an operation window. The operation window is opened in a side wall face of a camera chassis separating rearward from a lens mount portion along the direction of the optical axis and on a peripheral wall of a case portion of the camera chassis.
摘要:
An iris camera module includes an image pickup optical system and a target optical system and the optical path is divided by a half mirror. An image of an iris is picked up by an image pickup element of an image pickup section. The iris image thus picked up is compared with a reference iris image stored in a storage in advance and the comparison result is output. The iris camera module has a configuration fit for a compact design. The reference iris image as a reference for comparison is stored in the storage of the comparison chip. It is thus difficult to falsify the reference iris image thereby providing a high security.
摘要:
A rotary plate has an eccentric shaft and a recessed portion which are spaced from a rotary shaft. A shutter is connected to the eccentric shaft by a swing arm which is rotatable about the eccentric shaft. A pin is provided on the swing arm. When the rotary plate starts rotating from a closed condition of the shutter, the swing arm moves linearly to release the shutter even when the shutter freezes to the casing. When the swing arm further rotates, the pin engages with the recessed portion of the rotary plate. The swing arm is integrated with the rotary plate. The shutter is quickly opened. When the shutter is fully opened, the pin disengages from the recessed portion. As the eccentric shaft is located adjacent to the rotary shaft, a large force is transmitted to the shutter. Thus, it becomes possible to use a low-power motor to release the shutter from the camera casing even when they freeze together.
摘要:
There is provided a magnetic recording/reproducing apparatus which has an improved reliability for a reproduced signal by eliminating a deformation in a reproduced signal waveform due to a residual magnetization generated in a magnetic head. The magnetic recording/reproducing apparatus has a magnetic recording medium including a magnetic film to which information is magnetically recorded and a thin-film magnetic head including a magnetic pole and a coil provided around the magnetic pole. A current supplying circuit supplies a current to the coil so that a magnetic state of the magnetic pole is stabilized. The current is supplied to the coil after a recording operation has been completed by the thin-film magnetic head. The current may demagnetize the magnetic pole of the magnetic head, or stabilize the magnetic state of the magnetic pole.
摘要:
An electronic tuning circuit for an AM radio receiver in which a signal of a specific frequency is selected from the input signal from an antenna is provided, this tuning circuit having a tuning transformer with a first winding and a second winding, the number of turns on the first winding being greater than the number of turns on said second winding, the input from the antenna being applied to the second winding of the tuning transformer, and further having two varactor diodes, each of which is connected in series with a DC-blocking capacitor, these series-connected varactor-capacitor combinations being connected in parallel with the first winding of the tuning transformer such that the polarities of the varactor diodes are mutually opposing.
摘要:
A helical filter is provided which includes a plurality of coupled helical coils each wound around one of a plurality of substantially parallel elongated bobbins having first and second end portions. Each of the coils has an open end at a first end thereof and a grounded end at a second end thereof. A moving member for adjusting the resonance frequency of the filter is provided at the first end portion of one of the bobbins, and a bandwidth-adjusting screw is provided in the hollow interior region of one of the bobbins at the second side thereof. The screw is accessible from the second end portiion of the bobbin so as to be rotated for adjustment of the bandwidth of the filter. The bandwidth-adjusting screw is disposed at the grounded second end of the helical coil wound around the hollow bobbin.
摘要:
An inductor is configured so as to wind a control coil on one of winding portions of first and second cores and to wind a tuning coil on the other winding portion to insert the second core into a hollow portion provided inside the first core, thereafter accommodating the first and second cores thus assembled into a pot-shaped core, wherein both winding portions of the first and second cores are arranged in parallel with each other and the winding portion of the first core is arranged perpendicular to a bottom surface of the pot-shaped third core. The control coil and the tuning coil are arranged so that their magnetic paths overlap with each other at the winding portion of the second core, thereby to control a current flowing through the control coil when energized to vary effective permeability of the core on which the tuning coil is wound, thus producing changes in inductance.
摘要:
An ink jet printing head which includes a head body provided with an ink filling port (18), a plurality of rows of nozzles (32A.sub.1 through 32A.sub.5, 40B.sub.1 through 40B.sub.5) arrayed in a staggered formation, pressure chambers (21A.sub.1, 21A.sub.2, . . . , 21B.sub.1, 21B.sub.2, . . . ), one for each of the nozzles, and ink passages (28A.sub.1, . . . , 33A.sub.1, . . . , 38B.sub.1, . . . , 41B.sub.1, . . . ) connecting the ink filling port with the nozzles via corresponding pressure chambers. (19A.sub.1 through 19A.sub.5, 19B.sub.1 though 19B.sub.5). The pressure chambers are formed inside the head body and adjacent to the surface of at least one side of the head body. Piezoelectric elements are mounted on the outside of the head body at positions corresponding to the pressure chambers.