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Recent content by carter tsang

  1. C

    simulated inductor for dc-dc converter?

    are there some suggestions about how to choose resistors and amplifiers to realize the simluated inductor?
  2. C

    simulated inductor for dc-dc converter?

    sorry, I do not know how to conduct ac analysis. And I have try a large number of values to realize the 100uH, but always fail. The situation where I use this simulated inductor is that the input voltage is 10v-(-5v)square wave, so that is the reason why I choose 12V input sine voltage to...
  3. C

    simulated inductor for dc-dc converter?

    :cry:sorry, I do not know how to conduct  ac analysis The reason why I choose the 12V input voltage is that in the situation where I use the simulated inductor, the value of input voltage is about 10v-(-5v)square wave。 should I change the amplifier?
  4. C

    simulated inductor for dc-dc converter?

    although it seems to be in accordance with the formula when R=1k and c=100pF then L=100uH, the simulation result is not desirable. red-sine voltage/10K and peak=12V green-current
  5. C

    simulated inductor for dc-dc converter?

    Added after 1 minutes: oh, sorry, I let my message in the quote. 
  6. C

    simulated inductor for dc-dc converter?

    I use the circuit in the papers to establish a simulated grounded inductor, but it can only simulate the inductor of high value, such as 0.1H, if the value is 100uH, it is tough to determine the parameters of resistors and capacitors. I can not get the 100uH simulated inductor. the simulation...
  7. C

    simulated inductor for dc-dc converter?

    are there some methods or articles which introduce the parameters design around the op amp, for example, how to determinate the value of resistors or capacitors around the op amp, or what I should pay attention? I have some troubles to determine this
  8. C

    simulated inductor for dc-dc converter?

    For example, in buck circuit, I do not think the function of simulated ungrounded inductor is the same as the real inductor which is made of coil, and considering the high frequency which will result in influence on the op amp in the simulated inductor, it is impossible to use the simulated...
  9. C

    simulated inductor for dc-dc converter?

    this simulated inductor can not be used in the situation of power conversion, where a coil is used as energy storage; but, the inductor in the buck circuit is used for energy storage. Is that right? and this simulated inductor is usually for grounded inductor, does anyone have some examples of...
  10. C

    simulated inductor for dc-dc converter?

    lm2674 inductor because the real indcutor can be replaced by the simulated inductor, which consists of op-amps, resistors and capacitors, can I use the simulated inductor to substitute the real inductor in the dc-dc converter, such as buck or buck-boost circuit? need some suggestions! thank you...
  11. C

    help for international student!

    I want to study in the USA for Master degree, and my IBT score is 80, writing=reading=listening=21, and speaking=17, and my GER general score=490+800, my major is power electronics Does anyone give me some suggestions about which school is suitable for me? Thank you very much!

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