Ic Information Electronic News

[introduction] screen efficiency behaved shield the attenuation degree to electromagnetic wave. Can go to the intensity attenuation of electromagnetic wave normally as a result of shield original 1% to extremely one of, because this connects commonly used decibel (DB) will state. The screen efficiency of general shield can amount to 40 DB, the screen efficiency of the shield of equipment of for military use can amount to 60 DB, the screen efficiency of the shield of TEMPEST equipment can amount…

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[introduction] the switch speed of transistor comes by its switch time namely token, switch time is shorter, switch rate is rapidder. The switch process bag of BJT is contained open and involve two processes, corresponding ground has open time Ton and close time Toff, the master switch time of transistor is Ton and Toff the sum.   The switch speed of transistor comes by its switch time namely token, switch time is shorter, switch rate is rapidder. The switch process…

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[introduction] EOS is a current term, because overmuch electron tries to enter circuit through corresponding method,express, bring about a system to had borne great pressure. A bit need to notice, this is a function that changes along with power and time.   What is meant by EOS?   EOS is a current term, because overmuch electron tries to enter circuit through corresponding method,express, bring about a system to had borne great pressure. A bit need to notice, this is a…

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[introduction] industrial spot environment is complex, sensor is apart from controller often very far, PT100 of lukewarm to measuring sensor, sensor block is worth metabolic 0.385Ω/ ℃ , because this crosses the line impedance of long lead to cannot be ignored, eliminate what lead draws to measure an error, it is the question that raises PT100 to measure precision to must be solved.   PT100 of commonly used platinum thermistor is one kind is had the feeling lukewarm sensor of…

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[introduction] a lot of people can use operation amplifier when comparator now and then. Generally speaking, this kind of practice is feasible. But now and then this kind of use method that meeting somebody asks about our operation amplifier. This kind of method has sometimes effect, anticipate as people however sometimes in that way the effect is good. Why can you appear this kind of circumstance?     A lot of people can use operation amplifier when comparator now and…

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[introduction] when engineers are looking for bus line of CAN bus line to transmit unusual reason through weaveform, via because drop,often can be being encountered the edge crosses delay to cause the condition of a sampling mistake, and drop because bus line capacitance is brought about greatly too,the edge crosses delay is commonly. The article will take you to know the problem that capacitance creates greatly too and solution.   Bus line capacitance crosses the phenomenon of big question  …

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[introduction] on August 2 afternoon, 10 thousand Le Ran gas of Guangdong provide limited company and Shenzhen city power to add up to microelectronics Inc. to hold strategic collaboration autograph to arrange a ceremony in building of scientific research of harbor of Shenzhen Tsinghua information, I love program network to suffer invite attend the conference to witness this one hour.   On August 2 afternoon, 10 thousand Le Ran gas of Guangdong provide limited company and Shenzhen city power to…

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[introduction] for instance novice engineer Zhang San still does not have very good understanding to the computation of transformer of switch power source, go consulting Li Sihe Wang Wu, next Li Si gave formula of a computation to give Zhang San, wang Wu also gave formula of a computation to give Zhang San. Next of the formulary in spirits that Zhang San gives according to two people respectively calculated rise, after numerate, the inductance amount that discovers two formulary computation…

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[introduction] radio frequency circuit board because the design is in theoretic still have a lot of uncertainty, because this often is described to be artistic ” of black of a kind of “ , but this viewpoint the part is only correct, RF circuit board the design also has a lot of standard that can follow and the law that should be not ignored.   Nevertheless, when be designed actually, truly practical skill is how cannot be restrained because of…

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[introduction] the main failure mode of parts of an apparatus of protection of commonly used circuit is short circuit, twinkling changes voltage is restrained implement (TVS) also not exceptional. Once TVS short-circuits invalidation, the electronic equipment breakdown that constant regular meeting will protect the high energy that releases. This is TVS manufacturer the home and use the case that just want to do this utmost to decrease or shuns. The feature of microcosmic form appearance that has dissection observing acquisition…

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