Ic Information Electronic News

[introduction] in design of high frequency circuit, classics regular meeting uses AC coupling electric capacity, or adds two to be connected continuously between chip, or adds two between chip and connector. Look be like simple, but everything differs because of the high speed of signal. The high speed of signal is transmitted make this capacitance becomes not “ ideal ” , this capacitance is good without the design, with respect to the failure that may cause whole project. Accordingly, to…

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[introduction] where is the distinction of voltaic transformer and general voltage transformer? This problem even if staff of design of elder magnetism component replies very hard also. Main distinction depends on: Transformer tries to alternate voltage to deputy edge from former edge, and voltaic transformer tries to alternate electric current to deputy edge from former edge. The voltage size of voltaic transformer is decided by load.   Take you actually to calculate transformer of an electric current!   We will…

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[introduction] the engineer knows real switch power source half bridge develop attacks to one lies between straight capacitance, attack in principle develop actually in be to do not have this capacitance. The existence of this capacitance is the reason that has it certainly, how should understand, how should calculate again its capacity?   Graph 1   Half bridge works basically principle   Above all block of oversight small size breaks capacitance CB, criterion NPThe lower end can regard the join…

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[introduction] whether to travel through conducting in the light of origin of stray radiation of 3 harmonic analysis, through checking test and verify the abundant that noise conducts below this frequency is measured in 9dB above. Next move of train of thought arrived on radiant noise. Carry a case, using is test of heart science and technology measures a solution, those who finish the radiation stray of product of wireless intelligence terminal is final optimize.   Case of some wireless…

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[introduction] the system of radio of 2.45 GHz stone’s throw that uses extensively, for example blue tooth low power comsumption and Zigbee, dispute often fits content couplet net (IoT) mature technology of application. Although this frequency paragraph radio is had really the good ability that wear a wall and enclothe character, but in certain applying (for example, in certain part? ? In nodding the intelligent illume that is far from emissive center) , still exist a few challenges that force…

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[introduction] industry and instrument appearance (a crucial condition of I&I) application is to have reliable data interface, use in connect through diagnosing port to check all. Standard of RS-232 bus line is use in I&I application the earliest the most extensive also physical layer bus line designs one of standards. RS-232 was rolled out 1962 at first, it is transmission standard of data of a kind of Chan Duan; Although bruit calls his very fast die out, but the standard…

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[introduction] data is collected, the other application with sensor signal recuperation and input signal bigger span, can ask to use gain optional amplifier. Optional amplifier is in traditional gain in feedback annulus road, it is to use switch to reach resistor join to be inputted instead, nevertheless switch resistor can reduce the noise performance of amplifier, increased to input the capacitance that go up instead, and rose nonlinear gain error. When using low noise amplifier, the addition of noise and…

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[introduction] the article will undertake discussing to a few parameter, like hard switch and soft switch ZVS (0 voltage are changed) develop attacks medium switch loss, right — of circuit and loss of switch of 3 parts of an apparatus is characteristic and relevant main power guides a loss, conduct loss and close loss to have a description. In addition, returning those who pass illustrate diode to restore character is to decide MOSFET or IGBT guide the main factor that…

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[introduction] when MEMS inertial measure unit (IMU) uses as when the feedback sensor in athletic control system, must understand the noise situation of gyroscope, because it is met,needless physical campaign is created on monitors platform. According to particular case, the need when undertaking estimation of noise of inchoate application target in the light of specific MEMS IMU considers many potential error sources. Summary   When MEMS inertial measure unit (IMU) uses as when the feedback sensor in athletic control system,…

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[introduction] recently, exceed large scale integration (the development spread of VLSI) technology became wide digital control uses range, be in especially the application of respect of component of power source electron. The number controls IC to have a variety of advantages, for instance naked a dimension is smaller, passive component amount fewer, cost is lower. Additional, digital control can use bus line of power source government (PMBus™) will finish a system to configure; Advanced control algorithm can improve performance; But…

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