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Recent content by cutiegal

  1. C

    Why we need to operate at 60 kHz frequency?

    i was asked to design a converter with operating frequency of 60KHz (for my IGBT).... can someone tell me why we need to operate at 60KHz?
  2. C

    capacitor charging and discharging

    actaully is related...coz the pic i attach is the output waveform of my capacitor...the connection of the capacitor i dint show..but i can enclose it now... S1 on, (S2, S3, S4) off first..then (s2, s3, s4) ON, s1 Off
  3. C

    capacitor charging and discharging

    charging and discharging of capacitor full topic 1)can someone tell me why the voltage across capacitor as shown in the diagram enclosed start with 10v? why not start from zero. i am supplying 10v to these 2 capacitors. (both of this capacitor are connected in paralle when charging up, but...
  4. C

    how to reduce the stress...HELP

    From the figure, switch S6 will ON first for a short period b4 Switch S5 is turned ON. Switch S5 has a high voltage stress, can someone tell me how the auxiliary switch(S6) help to reduce the stress of switch S5 so that S5 can turn on or off at zero voltage. the technique employed is Zero...
  5. C

    DRAM design: how data is stored and read ?

    DRAM design............. based on the diagram enclosed, i have one question to ask. can someone explain to me how data is stored or read? the code i used is (CAD tools) .include tsmc035.md .include latest.sp .param i=0.2u Vdd Vin 0 3.3 Vin Vwl 0 bit { [0 1] on = 3.3 off=0.0 delay=2ns rt=1ns...
  6. C

    capacitor 1uF vs capacitor 100uF

    can someone tell me the major different between capacitor 1uF and 100uF.....? have u ever heard about switched capacitor converter? if so, mind to tell me the biggest advantages of this type of converter over the conventianal converter..10sssss
  7. C

    can someone explain to me...

    "COllector resistors are to controlthe current when transistor goes to saturation. the collector resistance of 2K is to increase such current. " what do u mean by control the current? collector current? but as i know, the load resistance Rc will not affect the value of collector current since...
  8. C

    Help me understand attached circuit

    need helps from the attachment enclosed..i wan to ask why we need to connect the 2 diodes in between the capacitor (the one highlighted)..iizztt used to prevent the capacitor from discharging?10ssss
  9. C

    can someone explain to me...

    based on the attachment enclosed, i have 2 questions... first, what is the purpose of the input resistance of 2k from the LM555 Timer (output) to the base of transistor. second, what is the function of collector resistance of 10k for each transistors..why the collector resistance of the 4th...
  10. C

    Why a boost converter has a diode and inductor?

    boost converter boost converter consist of a switch, an inductor, and a diode....wat is the purpose of the diode and the inductor? 10sss
  11. C

    What is the purpose of signal pulse transformer?

    Pulse Transformer...... Hi, can someone explain to me what is the purpose of signal pulse transformer. avoid signal deterioration? 10sssss

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