Ic Information Electronic News

[introduction] in portable instrument, can use batteries to be systematic power supply only. Batteries report pressure ratio is normally inferior, often need to use circuit of small-power switch power source to undertake to low voltage voltage alternates in the system, satisfy the requirement that functional module differs in the system. However, use switch power source is sure to introduce ripple noise, how to reduce this ripple noise to become a when the system designs serious problem.   The ripple of…

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[introduction] brilliant brace up on the side a what action are two received capacitance? Someone says is laden capacitance, use with the oscillation frequency that will correct crystal; Someone says is to open brace up capacitance; Someone speaks of syntonic action. Capacitance and in-house circuit comprise the oscillation of certain frequency jointly, this capacitance is strong link, fixed frequency capability is very strong, the interference of other frequency came in very hard.   Those who tell is a bit more…

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[introduction] be based on deep inferior of micron craft newest circuit of thousand class imitate is lower and lower to the requirement of power source voltage, below some circumstances, still be less than 1 V. These high frequency circuit often need bigger supply current, accordingly, the likelihood is coming loose hot field existence is difficult. Designing one of objects is the level that makes power comsumption falls to need absolutely to circuit function. Converter of switch mode DC-DC is the…

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[introduction] between PWM and electronic ballast, half bridge circuit is producing main effect. Half bridge circuit is comprised by parts of an apparatus of two power switch, they join together with the form of totem pole, undertake outputting, provide square wave signal. A working principle that the article will introduce half bridge circuit for everybody, and a few problems that should note among half bridge circuit, the hope can help power source novices’ faster understanding half bridge circuit. Above all…

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[introduction] what POE (Power Over Ethernet) points to is the case that in foundation of existing wiring of aether net Cat.5 the framework does not make any altering below, in for a few terminal that are based on IP (the phone that be like IP, wireless local area network receives camera of bit of AP, network to wait) transmission data signal while, return the technology that can provide dc power supply for this kind of equipment. POE technology can be…

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[introduction] the scientist devotes oneself to to develop low cost, efficient with safe batteries, and as promising young person of lithium ion batteries, also many scientists pay close attention to aluminous batteries of ceaseless research and development (Aluminium Batteries) , among them lab of science and technology of Swiss federal material (Empa) as federal as Su Li world technical institute (ETHZ) already located two kinds of stuff, be expected to promote aluminous cell efficiency and increase use extensive sex. Because…

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[introduction] capacitance is the passive parts of an apparatus that we often use in circuit, via a few kinds when often see aluminium electroanalysises capacitance, filter wave capacitance, tantalum capacitance, stick a capacitance of pottery and porcelain to wait. Because the character of every kinds of capacitance decided corresponding use situation is different. So the article introduces the ABC of capacitance first, pass the distinction that compares a few kinds of capacitance and characteristic next, summary went out to choose…

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[introduction] the large stage that regards southwest electron as the industry, 2018 China (Chengdu) electronic information exposition will in July 2018 10-12 day is held again in international exhibition center of Chengdu century city. The 2018 China big data that associated the corresponding period holds uses plenary meeting, total dimensions will be achieved 22, 000 square metre. The industry of many 700 electron that comes from world each district is gotten army the enterprise will show electronic skill in the…

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[introduction] expect long already 2018 China (Chengdu) electronic information exposition will be about to come to will be held in new international exhibition center of Chengdu century city on July 12 on July 10. Current exposition exhibits an area to exceed 3 more than square metre, have semiconductor, big data, the army and the people shirt-sleeve, new-style show, electron yuan parts of an apparatus, test is measured, intelligence is made, 8 big characteristic exhibit city of He Zhihui of content…

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[introduction] smooth Ou (isolator of Opticalcoupler) Yi Chenguang report, opto-coupler or photoelectricity coupler. It is the parts of an apparatus that transmits telegraphic signal with coming for agency solely, normally glow implement (LED) of infrared glow diode and get light implement (photosensitive semiconductor is in charge of) enclose inside same envelope. When the input end adds diode of the glow when telegraphic date to give out the light, photocurrent arises after photosensitive dynatron accepts the light, from output end is…

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