摘要:
An automatic level control circuit is constituted by a variable gain amplifier means supplied with an input signal, for outputting a level controlled signal; detector means for detecting the output signal of the variable gain amplifier means; integration circuit means including an operational amplifier and a capacitor; means for applying an output voltage of the detector means to a first input terminal of the operational amplifier via a first resistor; means for applying a first reference voltage to the first input terminal via a second resistor; a first diode with one end connected to the output terminal of the operational amplifier and the other end connected to one end of the capacitor; a second diode connected between the other end of the capacitor and the first input terminal; a transistor with its first and second electrodes connected in parallel with the capacitor and its third electrode connected to the output terminal of the operational amplifier; and circuit means which decreases the gain of the variable gain amplifier means only when the output voltage of the integration circuit means appearing at the output terminal of the operational amplifier exceeds a second reference voltage.
摘要:
An amplitude limiting circuit is provided in which the input signal is fed to the non-inverting input terminal and the output is taken from the inverting input terminal of an operational amplifier having a feedback resistor connecting the inverting and output terminals of the amplifier. Either the input resistor, feedback resistor or operational amplifier supply voltages can be used to alter the upper and lower limit voltages of the circuit.
摘要:
A support is forced to be extended between a longitudinal member of a hull block clamped between a movable jaw and a fixed jaw on the one hand and another longitudinal member located adjacent to the first mentioned longitudinal member so that the load exerted to the clamping device when the hull block is lifted as well as the reaction force exerted to the support may force the movable jaw against the longitudinal member to firmly clamp it between the movable and fixed jaws. The longitudinal member is so firmly clamped between the movable and fixed jaws that it is not released even when the hull block is lifted in the vertical position.
摘要:
A production method of an optical waveguide includes: preparing a laminated body that includes a first clad layer and at least a core layer laminated on the first clad layer; forming a light propagating optical waveguide core by cutting the core layer by use of a dicing saw from a side where the core layer is laminated while intruding an edge of a blade portion of the dicing saw into the first clad layer so as to partially cut the first clad layer; and embedding at least a cut portion of the laminated body with a second clad layer.
摘要:
An optical waveguide comprising: a waveguide core through which light propagates; a cladding that surrounds the waveguide core and has a refractive index that is less than the refractive index of the waveguide core; a metal layer that is formed on a surface of at least one end of the optical waveguide in a longitudinal direction, the surface being inclined so as not to be perpendicular to the longitudinal direction; and a channel that is formed at a portion of an outer surface of the cladding, the outer surface forming an acute angle with the inclined surface, and the channel being positioned such that light entering the optical waveguide adjacent the channel is reflected by the inclined surface into the waveguide core.
摘要:
An optical waveguide film includes an optical waveguide film main body having an optical waveguide core through which light is propagated, and a cladding portion that encloses the optical waveguide core and has a lower refractive index than that of the optical waveguide core; and an electric wiring layer formed on at least a part of a principal surface of the optical waveguide film main body.
摘要:
An optical waveguide includes: a core portion through which light propagates; a cladding portion enclosing the core portion along a direction of light propagation, and a colored resin for position recognition marking, the optical waveguide having substantially planar outer surfaces including principal surfaces thereof, and the colored resin being embedded in the optical waveguide at a position that does not substantially overlap the core portion when viewed from a direction perpendicular to a principal surface of the optical waveguide and does not substantially contact the core portion.
摘要:
A stacked piezoelectric device 1 including a ceramic laminate formed by laminating piezoelectric ceramic layers and inner electrode layers alternately and a pair of side electrodes. The inner electrode layers 13 and 14 have inner electrode portions 131 and 141 and the recessed portions 132 and 142. The ceramic laminate 15 has the stress absorbing portions 11 and 12. A recessed distance of one of two of the recessed portions 132 and 142 which interleave the stress absorbing portions 11 and 12 therebetween which is located on the same side surface as the stress absorbing portion 11 or 12 is greater than the depth of the stress absorbing portion 11 and 12.
摘要:
An optical waveguide includes a layer A and a plurality of cores enclosed in a cladding. During production of the optical waveguide, a layered film including alternate layers of a core layer and a cladding layer is cut so as to form a groove that penetrates through the layered film in a thickness direction and so as to form a plurality of core portions, and the layer A is provided so as to partially fill the groove depthwise and so as to maintain spacing between the plurality of core portions before the core portions is enclosed by the cladding.
摘要:
A polymer optical waveguide includes: an optical waveguide portion that includes a core and a cladding each formed of polymer material; and a conductive line that is installed along the core integrally with the optical waveguide portion, and that has an electrode surface for external connection exposed on a surface different from an end surface of the optical waveguide portion.