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Recent content by rgb83

  1. R

    MOSFET checks if still usable

    So, are you sure the MOS is broken? I heard main cause of failure is a short between G and D but with this I read 97.6 Ohm.
  2. R

    MOSFET checks if still usable

    Hi guys, I've this n channel MOSFET (P3NA80FI) that I desoldered from another board. I've already done the following checks divided by continuity and diode mode of the multimeter. - Continuity mode 1) G-D =97.6\[\Omega\] 2) G-S = shorted 3) D-S = 97.6\[\Omega\] - Diode mode 1) D(+) S(-)...
  3. R

    [SOLVED] Understanding oscillations at the end of an inductance energy discharge

    You're absolutely right! Thanks for pointing it out!
  4. R

    [SOLVED] Understanding oscillations at the end of an inductance energy discharge

    Hi SunnySkyguy, your answer solved a lot of doubs I had. I've just a couple of other questions: 1) Why the voltage is not clamped to 30V (internal MOS zener) instead of 60V of the external Zener? 2) How should I connect the snubber to smooth the oscillations? 3) Do you think those...
  5. R

    [SOLVED] Understanding oscillations at the end of an inductance energy discharge

    Guys someone can help me?
  6. R

    [SOLVED] Understanding oscillations at the end of an inductance energy discharge

    Can you help me in writing down the formula of the equivalent circuit in this condition? Thanks for your answer
  7. R

    [SOLVED] Understanding oscillations at the end of an inductance energy discharge

    Hello Edaboard members, I'm trying to understand the reason of the oscillations that appear at the end of the fast switch off phase of an inductive load(see the zoom of the picture). See attached Ltspice circuit for reference (rename it in *.asc). I understand the usage of the Zener diode...
  8. R

    Tapatalk adding request

    Hi Edaboard team, Why do not add the plugin in order to open Edaboard forum with Tapatalk? Thanks Posted via Topify on Android
  9. R

    ADC integrated in an ASIC

    Maybe i didn't explain very well my question. I'm interested ro know if there is any tool which permit to calculate the piece price of an ASIC having some features with and without an integrated ADC. Are you aware about it? Posted via Topify on Android
  10. R

    ADC integrated in an ASIC

    Ok so basically I need to have a look to the literature for ADC solution. Do you know of any way to compare an Asic chip with and wihout an integrated ADC? Is there any tool I can use? Posted via Topify on Android
  11. R

    ADC integrated in an ASIC

    Hi guys, I was wondering if you know wich types of Analog to digital converter can be integrated into an ASIC? Do u know any document I can refer to? Or any example? Thanks so much. Posted via Topify on Android
  12. R

    Ways to define the accuracy of a simulation model?

    Hello members, I have some doubts on how to define the requirements for certain analog simulation models. Supposing you have to require a Boost DCDC converter simulation model which shall provide the Output voltage with a given maximum error. How would you define the error and which is the...
  13. R

    Problem with Metronic Zapbox Single 4.2 (DTT)

    I know it is a good habit to be patient and wait an answer but why none is trying to put an answer? Is it the wrong forum section?
  14. R

    Problem with Metronic Zapbox Single 4.2 (DTT)

    May I ask you to have a look to the above message. Thanks
  15. R

    Problem with Metronic Zapbox Single 4.2 (DTT)

    Hello Edaboard community, The problems began days ago when my DTT (digital terrestrial television) suddenly frozen the television image and remained in this state untill i switched off it. Instead yesterday it doesn't turn on anymore when I press its button. To be precise its led is turned on...
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