摘要:
A pulse width modulated signal amplifier comprises a DC power supply for rectifying an AC input voltage to produce a pair of DC voltages of opposite polarity, a pulse width modulated signal amplifying circuit supplied with a pulse width modulated signal to produce a demodulated signal through a low pass filter, and a detecting circuit responsive to an abnormal level of the DC voltages to produce a detecting signal when a smoothing condenser of the DC power supply is overcharged by a current flowing through the low pass filter in one direction. Such detecting signal is desirably employed to prevent the appearance of the output signal from the pulse width modulated amplifying circuit.
摘要:
A transistor inverter includes at least a pair of switching transistors, a transformer with primary and secondary windings, a DC voltage source with a pair of output terminals and a voltage reference terminal, and a rectifying circuit connected to the secondary winding of the transformer. A collector electrode of one of the switching transistors is insulated from a chassis by an insulation means comprising a first insulating layer, a conductive layer such as a heat sink and a second insulating layer. The conductive layer is electrically connected to the voltage reference terminal of the DC voltage source so as not to produce an undesirable radiation through the chassis.
摘要:
A transistor amplifier comprised of a transistor supplied with a first operating voltage and a field effect transistor having triode-type dynamic characteristics and supplied with a second operating voltage. The gate electrode of the field effect transistor is coupled to the transistor collector. In order to stabilize the field effect transistor bias current in the event of fluctuations in the second operating voltage, a voltage control circuit is responsive to such fluctuations to alter the first operating voltage so as to vary the gate voltage applied to the field effect transistor in a direction to stabilize the bias current.
摘要:
A broadcasting system 1 provides a digital content to be broadcast with an attribute vector A thereof. A filter 12 is assigned with a selection vector S indicating user's taste. The filter 12 performs a standardized inner product operation between the selection vector S and the attribute vector A for selecting and recording broadcast programs. A = ( a 1 , a 2 , a 3 , … , a n ) S = ( s 1 , s 2 , s 3 , … , s n ) P = A · S A S
摘要翻译:广播系统1提供要用其属性向量A广播的数字内容。 向过滤器12分配指示用户品味的选择向量S。 滤波器12在选择矢量S和用于选择和记录广播节目的属性矢量A之间执行标准化的内积运算。 A =(a 1,a 2,a 3,...,an)S =(s 1,s 2,s 3,...,sn)P = A·SAûS è
摘要:
A broadcasting system 1 provides a digital content to be broadcast with an attribute vector A thereof. A filter 12 is assigned with a selection vector S indicating user's taste. The filter 12 performs a standardized inner product operation between the selection vector S and the attribute vector A for selecting and recording broadcast programs. A=(a1, a2, a3, . . . , an) S=(s1, s2, s3, . . . , sn) P = A · S A S
摘要翻译:广播系统1提供要用其属性向量A广播的数字内容。 向过滤器12分配指示用户品味的选择向量S。 滤波器12在选择矢量S和用于选择和记录广播节目的属性矢量A之间执行标准化的内积运算。 A =(a1,a2,a3,...,a)S =(s1,s2,s3,...,sn)P = A·SAS
摘要:
A high speed dubbing is to be realized with two recording and/or reproducing units for compressed data. To this end, a magneto-optical disc 32 is read by an optical head 33 and compressed data produced via a decoder 41 are delivered to a memory 14 via a switch 37. The data are then delivered to a magnetic head driving circuit 16 via an encoder 15 for direct writing on a magneto-optical disc 2. In this manner, compressed data are directly dubbed without expansion to realize high speed dubbing.
摘要:
A gas generating composition which is capable of significantly reducing the concentration of harmful gas components, particularly carbon monoxide, in the generated gas. Also a process for molding a gas generating composition in a suitable shape with high efficiency without a risk of explosion, fire or the like, the process being capable of producing a durable and firm molded gas generating composition.The gas generating composition of the invention contains an oxide-based catalyst comprising at least two members selected from the elements of Groups I, IV, V, VI, VII and VIII in the periodic table in addition to the nitrogen-containing organic compound and the oxygen-containing inorganic oxidizing agent both essentially incorporated in the gas generating composition. The invention also provides a process for molding a gas generating composition, the process comprising the steps of adding 5 to 20% by weight of water to a gas generating composition essentially containing a nitrogen-containing organic compound and an oxyhalogen acid salt and further containing an oxide-based catalyst to give a wet mixture, granulating the wet mixture into wet granules, drying the wet granules to provide a discrete preparation and compression-molding the discrete preparation.
摘要:
An optical disc includes a disc base plate of a light-transmitting synthetic material having a recess for mounting a magnetic plate, and a holding part, integral with the disc base plate, for loosely holding the magnetic plate mounted in the recess with respect to the disc base plate. It is possible with the present optical disc to prevent distortion of the disc base plate otherwise caused by the difference in thermal expansion coefficients of the two components to inhibit double refraction of the disc base plate otherwise caused by such distortion to maintain good recording/reproducing characteristics.
摘要:
Edges on both sides of each groove on a disk 11 are wobbled to indicate the addresses of recording locations. A laser beam for detection of data is radiated to a land for recording data, forming a spot 51-1. Two laser beams for detection of a tracking error are radiated to edges on both sides of a groove in such a way that the middle between the two laser beams coincides with the center of the groove, forming spots 51-2 and 51-3. By using such a tracking-error detecting laser beam to read out address information, the laser beam can be radiated to only the edge on a predetermined side of a groove. As a result, an address can be read out with a reduced amount of crosstalk from another groove even if the track pitch is small. Address information is thus read out with a highly accurate degree even in the case of a small track pitch.
摘要:
A gas-generating composition for air bags, which provides low explosion risk and low toxicity, has at least one gas-generating base selected among urazol and metal salts thereof, as the active ingredient, and an oxidizing agent. Urazol and metal salts thereof can effectively generate gas at a low burning temperature when in combination with the oxidizing agent.