Showing papers by "Panasonic published in 1980"

Humidity-Sensitive Electrical Conduction of MgCr2O4-TiO2 Porous Ceramics

Abstract: The crystalline phase, microstructure, semiconduction, and humidity-sensitive electrical conduction of MgCr2O4-TiO2 ceramics were studied. A solid solution with TiO2 up to 30 mol% occurs as a single phase with a pure MgCr2O4-type spinel structure. The humidity-sensitive electrical conduction of the MgCr2O4-TiO2 porous ceramics is the most promising for humidity-sensing devices.

Formation Mechanism of Nonohmic Zinc Oxide Ceramics

Abstract: For the formation of nonohmic ZnO ceramics based on the system ZnO-Bi2O3-Sb2O3, the reactions on heating (→) and on slow cooling (←), 2PY+17ZnO\xleftarrow\xrightarrow950°~1050°C3Xzso+3Bi2O3 [L] \ding"C0, and Xzso\xleftarrow\xrightarrow\gtrsim1300°CSP \ding"C1, play important roles, where PY is Zn2Bi3Sb3O14 pyrochlore, Xzso a polymorph of Zn7Sb2O12 [SP] and L is a liquid. Oxide additives markedly influence these reactions and consequently the phases and microstructure of the ceramics, dissolving into the above phases and relating to composition and sintering conditions. In the case of Co, Mn and Cr oxides, the degree of influence is as follows : Co

Ink composition for ink jet recording

Abstract: An ink composition for ink jet recording consisting essentially of a water-soluble wetting agent, water, a water-soluble dye and an oxygen absorber

Screen Printed Thin Film CdS/CdTe Solar Cell

Abstract: Thin film CdS/CdTe solar cells with an efficiency of 6.3 % have been prepared on a borosilicate glass substrate of 4s×4 cm2 by successively repeating screen printing and heating (sintering) of each paste of CdS, CdTe and C. The CdS paste consists of CdS, CdCl2, GaCl2 and propylene glycol (PG). The CdTe paste contains CdCl2 and PG, and the C paste contains PG and a small amount of acceptor impurity. During the heating of C paste, an nCdS/pCdTe heterojunction is formed. In the most efficient cell, the peak of electron voltaic effect exists within 1 µm of the CdTe side from the CdS/CdTe metallurgical boundary. The C electrode cell is more stable than the previous Cu2Te electrode cell for an accelerated life test. From 25 elemental cells with 4×4 cm2 substrate, a 1 watt module has tentatively been constructed with a module efficiency of 2.9 %.

Electronic parts mounting apparatus

Abstract: This is directed to an electronic parts mounting apparatus comprising a means for carrying by given pitch an electronic parts collector (T) which is composed of electronic parts(P),strip band(1) having many concaves(3),for receiving the electronic parts (P), disposed at equal intervals and coating tape (2) for covering the concaves (3) in the receiving band; a support means (11) for horizontally supporting said electronic parts collectors (T) with the coating tape (2) being placed on the top side; a means (8, 12) for separating from the band the tape (2) of said collector (T); and an picking means (14, 15) for adsorbing the electronic parts (P) one by one from the concave (3) of the band (1) under the cover-open condition by separating the tape (2) from the band placed on said support means to carry and load the electronic parts (P) on a circuit board (13), thus allowing the electronic parts (P) to be continuously and stably mounted on the circuit board (13).

Apparatus for mounting electronic components

Abstract: An electronic component mounting apparatus for sucking up an electronic component and placing it onto a board with a suction nozzle, includes a step of switching over air pressure switching timings for the suction nozzle when the component is sucked with the suction nozzle and when the sucked component is mounted on the board. The air pressure switching timings are switched according to a velocity of up and down movement of the suction nozzle and independently for each of when the component is sucked with the suction nozzle and when the sucked component is mounted on the board. An electronic component mounting apparatus includes a suction nozzle for sucking an electronic component and placing it onto a board, a device for moving up and down the suction nozzle for suction and mounting of the electronic component, an air pressure switching unit for switching air pressure to the suction nozzle at an electronic component suction position and an electronic component mounting position, and a switching drive unit for performing switching control of the air pressure switching unit independently for each of when the component is sucked with the suction nozzle and when the sucked component is mounted on the board.

Electronic tuning antenna system

Abstract: At the feed side of each antenna element having transmitting conductor paths formed in continuous meandering shapes and having distributed constant impedances are electrically connected a variable tuning unit including a voltage variable reactance circuit and an impedance adjusting reactance element, thereby constituting an antenna circuit. A voltage variable capacitor is connected within the voltage variable reactance circuit. Antenna feed terminals are connected through a coaxial cable to input terminals of a remote-set radio receiver. A tuning control signal generated within the radio receiver is fed to a voltage variable capacitor within the voltage variable reactance circuit of the antenna circuit through the coaxial cable. The tuning control signal allows the antenna circuit to resonate with a particular frequency within a frequency band, the freqency being variable. The antenna element having the distributed constant inductance functions so as to have the best possible antenna radiation efficiency at resonant frequency signal by being in combination with the variable tuning unit and the antenna element is considerably reduced in size. At the resonant frequency signal, the characteristic impedance at the feed terminals of the antenna circuit becomes equal to that impedance at the receiving input terminals at the radio receiver connected to the antenna circuit, whereby an RF signal at the resonant frequency is selected and fed most efficiency to the radio receiver through the coaxial cable.

Mouth cleaning device

Abstract: A mouth cleaning device of this invention comprises a hand held gripping part with brush and nozzle members selectively mounted thereto. The gripping part is provided with a driving rod for transmitting to the selectively mounted brush member a reciprocal turning force and for providing to the selectively mounted nozzle member a water feeding path to lead water to the nozzle member from an external water feeding means. A driving means provides a reciprocal turning force to the driving rod. A change-over switch drives the driving means only when the brush member is mounted so that, when the brush member is mounted to the gripping part, the brush member will be reciprocally turned to perform tooth brushing. When the nozzle member is mounted to the gripping part, water will be jetted out of the nozzle member to perform gum cleaning and massaging.

Electrochromic display device

Abstract: The invention relates to an electrochromic display device (referred to as ECD hereinafter) which is stably workable for a long period and shows a long cycle life. The ECD of the invention has its feature in using a counter electrode which comprises a collector composed of a valve effect having metal such as titanium, tantalum, aluminum and the like, the metal being hardly soluble in an electrolyte, and a reactive material on the said collector and electrically connected to the said, collector, the reactive material being selected from reductant of tungsten oxide, iron berlinate and the like and being able to carry out a reversible oxidation reaction at a lower potential than that the said collector carries out an oxidation reaction.

Card or book involving luminescence

Abstract: At least one of two openable leaves is provided with at least one light-emitting diode, a thin battery for lighting the diode and a switch assembly. On opening the leaves, the diode emits light, which is extinguished when the leaves are closed to provide an indication of unique interest.

Brightness adjusting circuit of liquid crystal matrix panel for picture display

Abstract: A drive circuit drives a liquid crystal display device of the type in which liquid crystal fills a space between an X-Y matrix substrate having a number of picture elements each including a switching element, and a common electrode plate. The drive circuit provides an optimum picture displayed to an observer in accordance with ambient conditions such as light and temperature. To this end, a DC bias voltage to determine the operating point of the liquid crystal display device is applied to the common electrode. The brightness of the displayed picture may be controlled by adjusting the DC bias voltage. The DC bias is changed in accordance with a change in an amount of ambient light or ambient temperature. Furthermore, in accordance with the fall of the ambient temperature the DC voltage applied to the common electrode is made to oscillate at a frequency to which the liquid crystal is insensitive, with respect to the bias point. At this time, the amplitude of the oscillation is made large.

Induction heating coil

Abstract: An improved flat induction heating coil for a cooking apparatus of the type in which an electrically conductive cooking utensil is heated according to the principle of electromagnetic induction. To provide a substantially uniform magnetic flux density distribution in the induction coil constituting a part of the cooking apparatus and, hence, a uniform temperature distribution across the bottom of the cooking utensil, a refractory insulating material is wound adjacent inner turns of the coil to provide a comparatively larger winding pitch for said inner turns than for outer turns. This arrangement makes for a flattened temperature profile and eliminates an uneven cooking of food.

Voltage-dependent resistor and method of making the same

Abstract: A voltage-dependent resistor for a lightening arrester and a surge absorber comprises a sintered zinc oxide body of a composition which comprises, as additives, 0.1 to 3.0 mole percent of bismuth oxide (Bi2O3), 0.1 to 3 mole percent of cobalt oxide (Co2O3), 0.1 to 3 mole percent of maganese oxide (Mn02), 0.1 to 3.0 mole percent of antimony oxide (Sb2O3), 0.05 to 1.5 mole percent of chromium oxide (Cr2O3), at least one member selected from the group consisting of 0.1 to 10 mole percent of silicon oxide (Si02) and 0.1 to 3 mole percent of nickel oxide (NiO), at least one member selected from the group consisting of 0.0005 to 0.025 mole percent of aluminum oxide (Al2O3) and 0.005 to 0.025 mole percent of gallium oxide (Ga2O3), and 0.005 to 0.3 mole percent of boron oxide (B2O3), and if necessary, 0.00005 to 0.3 mole percent of silver oxide (Ag2O), with electrodes applied to opposite surfaces of the sintered body. The resistor has a non-ohmic property (voltage-dependent I property) due to the bulk itself. Therefore, its C-value can be changed without impairing its n-value by changing the distance between the electrodes at opposite surfaces.

Method of food heating control by detecting liberated gas or vapor and temperature of food

Abstract: A method of food heating control in which the heating time length (τ o ) from a time point (t 1 ) when the food temperature changing with the heating thereof reaches a predetermined set value (T 1 ) to a time point (t 2 ) when the vapor or gas liberated by heating of the food begins to increase the humidity or gas concentration is used as a basis for automatically determining a subsequent heating time length (τ R ). Since the time period (τ R ) for the subsequent heating process is determined by the heating time from the time point when the food temperature reaches a predetermined set value to the time point when the humidity or gas concentration begins to increase (unlike in the prior art method in which the heating time from the start of heating to the time point when humidity begins to increase is used to determine the subsequent heating time), the error in the heating time which otherwise might be caused by the variation in the initial food temperature is obviated. Consequently, it is possible to determine the total heating time without it being substantially affected by the initial temperature of the food.

Method of printing a spot pattern in a printed circuit board

Abstract: A method of applying a paste through a hole in a printed circuit board. A mask is provided with a hole with an upper larger cross-section portion and a lower smaller cross-section portion, the junction between the portions forming a ring-shaped land. The lower hole portion has a cross-section larger than the cross-section of the hole in the printed circuit board. The printed circuit board is positioned adjacent the mask with the hole therein aligned with the hole in the mask, and paste is applied to the hole in the mask from the upper hole portion. This paste is pressed through the hole in the mask and fills the hole in the circuit board with paste and coats the surface of the circuit board which is toward the mask and/or the surface which is away from the mask in the area around and close to the hole with the paste.

Rotary head assembly for magnetic recording and reproducing device

Abstract: The present invention relates to a rotary head assembly for a magnetic recording and reproducing device such as VTR. A stationary center shaft is mounted on the side of a stationary cylinder while a rotary sleeve which is fitted over said stationary center shaft for rotation about the axis thereof is disposed on the side of a rotary cylinder. A lubricating oil is injected between the rotary sleeve and the stationary center shaft so that a space between the cylinders may be utilized so as to provide a hydraulic bearing portion. Thus, the rotary head assembly may be made compact in size and to a higher degree of accuracy. In addition, the thrust load carrying point of the hydraulic bearing portion is located on the side of the rotary cylinder, and the portion adjacent to the thrust load carrying point has a sealing arrangement or construction so as to prevent the leakage of lubricating oil and to stabilize the rotation of the rotary cylinder.

Temperature compensated coaxial resonator having inner, outer and intermediate conductors

Abstract: A coaxial cavity resonator comprising an outer conductor and an inner conductor coaxially disposed in the outer conductor with one end of the inner conductor being connected to an end wall of the outer conductor to establish a short-circuit relationship and the other end of the inner conductor being spaced from the other end wall of the outer conductor to establish an open-circuit relationship. An intermediate hollow conductor is disposed coaxially with the inner and outer conductors and encircles a portion of the axial dimension of the inner conductor. The intermediate conductor has a closed end which is connected with the open-circuit end of the inner conductor.

Coenzyme immobilized electrode

Abstract: Improvements in a coenzyme electrode used to electrochemically measure the activity of enzyme or substrate concentration of the enzyme easily. The coenzyme is immobilized, without using a semipermeable membrane, on the electron collector directly with the chemical bond, particularly the covalent bond, whereby the activity of the oxido-reductase requiring the coenzyme can be measured. In addition, the oxido-reductase requiring the coenzyme is also immobilized together with such immobilized coenzyme to improve the characteristics of the conventional enzyme-coenzyme immobilized electrode.

Heating apparatus having voice command control operative in a conversational processing manner

Abstract: An oven that is controllable by a conversational style voice interaction with a user It includes voice recognition system for listening to the user and a speech synthesizer for talking to the user Operation occurs initially in a first voice recognition mode for recognizing one of a group of possible first voice commands from the user After recognizing a particular first voice command, operation continues in a voice synthesizing mode wherein the user is asked to make some choices which confirms or "narrows" the first voice command After synthesizing, operation continues in a second voice recognition mode for recognizing a particular one of a second group (less in number than the first group) of possible second voice commands from the user After recognizing a particular second voice command, the oven operates according to the preprogrammed instructions corresponding to the first and second voice commands

A sound reproduction system for motor vehicle

Abstract: A sound reproduction system for a motor vehicle in which two channel signals are applied to two loudspeakers provided in the passenger compartment to reproduce the signals. The system includes a transfer function converting circuit for converting transfer functions between a listener and the first and second speakers into different transfer functions in different directions from those to the first and second speakers, a delay circuit for compensating for a distant difference between the listener and the first and second speakers, and a reverberation circuit for providing reverberation to two channel input signals, whereby a feeling of a widened sound region is obtained even in a small passenger compartment.

System for program interrupt processing with quasi-stack of register-sets

Abstract: A plurality of registers included in a central processing unit are electrically divided into a plurality of register-sets which are arranged in a given order to be used as a stack where one of the register-sets at the top of stack is normally used for executing the program of a main routine In one embodiment, the data of the register-sets are pushed down for executing interrupt service routines and then popped up for resuming the suspended program When all of the register-sets are loaded, the data may be saved in a saving region of a main memory, and the saved data may be directly transferred to the top register-set when needed In another embodiment, actual push down and popping up of data are not performed but one of the register-sets is selectively enabled so that the register-sets function as a stack

Safety device for electric motor driven kitchen utensils

Abstract: In a safety device for electric motor driven kitchen utensils to make shredding or agitating meats and vegetables in short time, especially the one using one switch and not using conventional safety switch in series connection, the safety device works in such a manner that the switch can be closed only when a container lid is rightly placed on a container and can not be closed when the lid is removed from the rightly closed position, and that when the lid is taken off from the container, the switch is automatically opened. Furthermore, when a push-button to close the switch is being pressed, the lid can not be removed from the container because the lid is inter-locked with the switch to make sure for safety.

Cooking appliance of the hot air circulating type

Abstract: The invention is related to improvements in a cooking appliance equipped with both a microwave heating means and a hot air circulation heating means. By controlling the rotational speed of an air circulating fan or the power of heater means according to the kind of food to be cooked, the cooking time is shortened and the quality of cooked food is improved. The hot air discharging section of such an oven includes a perforated plate so as to prevent leakage of microwaves from the heating chamber, and an air baffle means is provided strategically in the hot air discharging section to ensure a uniform distribution of temperature within the heating chamber. The invention also includes an improved relative position of the air inlets, a double-deck tray and the air baffle means which functions to prevent a substantive dehydration of food which is a drawback of a conventional hot air circulation heating system.

Battery coil construction

Abstract: An electrochemical cell utilizes a coil assembly formed by spirally winding negative and positive plates together with at least one separator therebetween. Each of the positive and negative plates is constituted by a main portion containing battery active material and an edge portion free of the active material. In the coil assembly, the edge portions of the respective plates protrude outwardly beyond the opposite edges of the separator and positioned on respective sides of the coil assembly. Positive and negative current collectors are made of a holeless nickel-plated steel sheet and welded to the edge portions of the respective plates by means of a plurality of welds.

Low frequency therapeutic instrument

Abstract: A low frequency therapeutic instrument of the present invention which performs therapies by applying low frequency pulses to a human body can automatically elevate the voltage of low frequency output gradually from a low voltage by detecting contact connections with a patient of an output terminal for applying a low frequency to the patient so as to reduce any shock to the patient at the time of starting the therapy.

Heating apparatus with voice actuated door opening mechanism

Abstract: A heating apparatus, such as an electric oven or a microwave oven, comprises an enclosure case having therein a heating chamber to place a heating object therein, the enclosure case having a door at an opening of the chamber, and the door having a locking means, to lock the door when closed, and has a door lock releasing means, such as a lever and a solenoid planger, to release and open the door from the locking state of the locking means, a voice recognition circuit for recognizing voice commands of a user of the apparatus and produces at least a control signal, which drives the releasing means to open the door.

Heating apparatus safety device using voice synthesizer

Abstract: A heating apparatus with a simplified operating panel comprising a multi-command key actively incorporating several similar functions and a voice synthesizer section such as a PARCOR synthesizer is disclosed. The accepted function of the multi-command key or the next operating step is announced by a synthetic voice. A program recall function is provided to confirm each stage of a preset programmed heating at given timing. The heating progress condition detected by a sensor and a timer is announced by a synthetic voice. Any loss of the functions of the sensor or the timer is detected immediately, followed by the stoppage of heating and the alarm and announcement of the fault.