1N135 Optocoupler : Pspice Replacement

Discussion in 'Power Electronics' started by lhern034, Oct 24, 2017.

  1. lhern034

    Thread Starter Member

    Oct 23, 2017
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    0
    Hello,

    I am trying to make a High Voltage Power pulse generator with
    Requirements
    Amp output: 15 A
    Voltage Output: 100V
    Rise: <=1 us
    Width: <= 100 um
    which is when I came across this schematic
    [​IMG]

    As i was trying to simulate the schematic, I noticed I noticed that could not find the Optocoupler in Pspice:
    upload_2017-10-23_21-59-37.png

    I was wondering if anyone knew what is the name of this Optocoupler for Pspice simulation or a replacement Optocoupler to simulate it:
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    If it were me I'd just use any optocoupler model that Pspice already has, ignoring the pin 1, 4, 7 and pin 8 connections. After all, it's only a simulation.
     
  3. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
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    Try a 4n35.
     
    lhern034 likes this.
  4. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    The number in the schematic must be wrong.
    An 1N35 is a gold bonded diode.
    The 4N35 as @Dodgydave said is the optocoupler.

    Bertus
     
    lhern034 likes this.
  5. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Thank you so much for telling me about this.
     
  6. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Thank you so much for telling me about this.
     
  7. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Ok, I'm having now trouble with figuring out what each of these inputs symbolize:
    upload_2017-10-24_22-54-18.png
    I think the the monitors are where the multi meters or oscilloscopes go in to check the voltages and currents

    the HV supply is just the variable DC voltage supply that we set like a battery or a supply and the HV output is just the output of the circuit
    I just want to make sure. I am not really sure what the control input actually is. It looks like a square wave input, but how do you add that part on pspice.



    Also what types of capacitors are these in terms of Pspice and in general:
    upload_2017-10-24_22-56-24.png
     
  8. bertus

    Administrator

    Apr 5, 2008
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  9. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    You might want to learn the symbols:

    symbols_ARRL.png

    Bertus
     
  10. lhern034

    Thread Starter Member

    Oct 23, 2017
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    0
    Thanks but C1, does not look like any of the capacitors in the picture given and it seems to have a voltage as a parameter. Does that still make it a electrolytic capacitor?
     
  11. bertus

    Administrator

    Apr 5, 2008
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    lhern034 likes this.
  12. lhern034

    Thread Starter Member

    Oct 23, 2017
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  13. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Hello,

    I am trying to make a High Voltage Power pulse generator with
    Requirements
    Amp output: 15 A
    Peak Voltage : 100V
    Rise: <=1 us
    Width: <= 100 um
    which is when I came across this schematic
    [​IMG]

    I made a Pspice schematic of it that looks like this:
    upload_2017-10-25_21-42-45.png

    however, when I run the Pspice simulation i get the following error in the pdf document along with the nodes circled in green.
    Does anyone know what the problem would be?
     
  14. Bordodynov

    Well-Known Member

    May 20, 2015
    1,793
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    You have incorrectly entered the capacitance value for two capacitors (you have an extra "blank").
     
    lhern034 likes this.
  15. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    I merged the threads as it is still about the same schematic simulation.

    Bertus
     
  16. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Yup I took off the spaces, but now there is a different problem. Thank you for noticing it.
     
    Last edited: Oct 27, 2017
  17. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    After taking off the extra spaces for the troubled capacitors, the main error seemed to have got away, but now the error seems to be with the V2 voltage source and the loop that it is in:

    upload_2017-10-27_16-47-42.png

    the error says, " ERROR(ORPSIM-15143): Voltage source and/or inductor loop involving V_V2. You may break the loop by adding a series resistance"

    How would I solve this?
    the original message is in this pdf:
     
  18. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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    Your HV supply is shorted to ground near R7.
     
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  19. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
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    Ok, i fixed it yesterday and it is now simulating, but I don't seem to get the results I want. I'll try a few more trials and see what happens.
     
  20. lhern034

    Thread Starter Member

    Oct 23, 2017
    46
    0
    Here are the simulation results I keep getting, but it does not meet the requirements:
    upload_2017-11-1_19-58-42.png
    upload_2017-11-1_19-59-8.png

    Is there anything I should change?
     
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