Abstract: An object of the invention is to receive a weak signal with high sensitivity and reduce distortion and signal suppression when a strong interference signal exists. When a high-frequency signal received by an antenna is to be amplified by an antenna amplifier and when an interference wave of high field strength exists, a switch circuit is switched by an output switchover circuit from the output of an amplifier to a through-circuit. The through-circuit guides the high-frequency signal, directly to the output side without passing through the amplifier. When the switching operation of the switch circuit is performed based on low-frequency components which are highly correlated with distortion components due to intermodulation, the switching operation can be performed more adequately. Noises can be reduced by performing a smoothing process on the switching operation, and the use of an inverting amplifier can prevent occurrence of oscillation.

Abstract: An object of the invention is to receive a weak signal with high sensitivity and reduce distortion and signal suppression when a strong interference signal exists. When a high-frequency signal received by an antenna is to be amplified by an antenna amplifier and when an interference wave of high field strength exists, a switch circuit is switched by an output switchover circuit from the output of an amplifier to a through-circuit. The through-circuit guides the high-frequency signal, directly to the output side without passing through the amplifier. When the switching operation of the switch circuit is performed based on low-frequency components which are highly correlated with distortion components due to intermodulation, the switching operation can be performed more adequately. Noises can be reduced by performing a smoothing process on the switching operation, and the use of an inverting amplifier can prevent occurrence of oscillation.

Abstract: A high emittance glass coating material which is applied to a surface of a specific structural body and fired on the surface, for providing on the surface a glass coating having a glass structure in which pigment particles having a predetermined degree of emissivity are dispersed, the high emittance glass coating material being characterized by including: a pigment covering film having a predetermined thickness, which is provided to cover each of the pigment particles, and which includes silicon dioxide (SiO2) such that a content of the silicon dioxide in the pigment covering film is higher than a content of the silicon dioxide in each portion of the glass structure which is adjacent to a corresponding one of the pigment particles.

Abstract: To provide a separator for a battery with high safety and a method for producing the same in which the separator has a shutdown function and capability of preventing meltdown, complete melting and cracks when the battery performs unusually. This separator comprises a porous ceramic sheet having ceramic fibers bonded to each other at their intersection points and polyolefin and comprises micropores for impregnation of an electrolyte.

Abstract: An apparatus for moving a work-sheet pressing member of a sewing machine relative to a work-sheet supporting member to press a work sheet on the work-sheet supporting member, the apparatus including a biasing device which produces a biasing force to move the work-sheet pressing member in a downward direction toward the work-sheet supporting member, a solenoid which moves, against the biasing force, the work-sheet pressing member in an upward direction away from the work-sheet supporting member, a control device which controls an energization of the solenoid so that the work-sheet pressing member is moved in the downward and upward directions, a detector which provides a detection signal indicating that the work-sheet pressing member is moved in the downward direction to a braking position which is predetermined relative to the work-sheet supporting member, the control device receiving the detection signal from the detector, and the control device controlling the solenoid such that, when the control device rec

Abstract: The present invention is intended to detect pulse noise entering an AM receiver in order to improve the freedom in construction and prevent erroneous operation. It provides a pulse noise detecting circuit in an AM receiver having an envelope detecting portion (108) that performs envelope detection on an intermediate frequency signal and outputs a gate signal for removing a pulse noise signal mixed in an output signal of the envelope detecting portion including a high pass filter (31) that blocks the envelope detection signal from the envelope detecting portion (108) and extracts the pulse noise signal, an amplifier (32) that amplifies the extracted pulse noise, a level detecting portion (33) that detects the level of the amplified pulse noise signal and outputs the gate signal when the level is a predetermined value, and a second band filter (34) that extracts the envelope detection signal and adjusts the smoothed amplification to make the level of the pulse noise signal constant.

Abstract: A thermal pen of thick film type comprises a thermal pen tip and a thermal pen tip holder connected to the thermal pen tip for holding the thermal pen tip. The thermal pen tip comprises a high resistance substrate formed in the form of a pen point, a heater element formed in the form of a thick film on the end of the pen point of the high resistance substrate and an electric conductor formed in the form of a thick film so as to connect to the heater element. The thermal pen tip is preferably provided with a heat-resistant protective coating to cover the end of the pen point. A heat- and wear-resistant heat-sensitive recording piece is preferably provided in a heat conductive relation to said heater element.