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  1. N

    exponential delay on/off transition?

    I decoupled from the load the cap and it is working perfect. Thank you all
  2. N

    exponential delay on/off transition?

    actually i want to shape the output current. so I do this: where Id is a pulse in time and my_sine: ---------- Post added 10-11-11 at 00:04 ---------- Previous post was 09-11-11 at 23:41 ---------- I now notice that the problem with this kind of implementation is that that my upper limit is...
  3. N

    exponential delay on/off transition?

    where x is what? the simulation time? ---------- Post added at 19:54 ---------- Previous post was at 19:51 ---------- my exponential curve is just the response curve to a final value which is depended on specific voltages which are given from a formula.. ---------- Post added at 20:58...
  4. N

    exponential delay on/off transition?

    Hi everyone, I would like to apply an exponential time delay to an current source that i model using verilog-a using Cadence. I would like something like the transition operator but with emponential delay not a linear. One more thing is that I want the on time delay to be different than the off...
  5. N

    Ideal Op amp differential in cadence

    Re: cadence ideal op amp I have made this configuration, but when I design a voltage follower and put a pulse in the input I dont get anything in the output. Just a stable 0V signal. nothing changes. What's wrong?
  6. N

    How to start a verilog-A by HSPICE

    I have "hspiceva" in the my license file but in my .lis file I get: "hsp-vacomp: hsp-vacomp: Invoking the Verilog-A compiler for '...' hsp-vacomp: Synopsys HSPICE Verilog-A Compiler Version 1.60.802.081208. hsp-vacomp: Copyright (C) 2008 Synopsys, Inc. All Rights Reserved. hsp-vacomp...
  7. N

    HSPICE errors when simulating LT6004 opamp

    .ends card missing at reading hspice Hello i use HSPICE and want to use the opamp: LT6004. I have donwloaded the spice model from manufactures site (https://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1154,C1009,C1021,P29313) but i got the errors: **error**...
  8. N

    OPAMP as an integrator with low inpuit ranges (1uA)

    OPAMP as an integrator It seems that i have find an cmos differential amplidier that will do the job. Another question is, how will I set the values of the R and C to the Integrator to give me the exact integration to its output? Added after 3 hours 39 minutes: Nop the differential cannot...
  9. N

    OPAMP as an integrator with low inpuit ranges (1uA)

    OPAMP as an integrator Thank you for your answer. I will try to find some with jfet. Or I will put an amplifier before it.
  10. N

    OPAMP as an integrator with low inpuit ranges (1uA)

    OPAMP as an integrator Hello is there any OPAMP that i can use as an integrator which can have low inpuit ranges? Even for 1uA?? I have used the OP-7c in HPSICE but it can handle currents only above 20mA..
  11. N

    HSpice AvanWaves 2005-03 and 2007-03 crash on Windows XP

    HSpice AvanWaves My computer cinfiguration is the same in both cases. I run the 2003 version at the computer. Athlon 4400+ 2GB Ram GSkill DFI Lanparty Ultra-d MSI Geforce 6600LE
  12. N

    HSpice AvanWaves 2005-03 and 2007-03 crash on Windows XP

    avanwaves windows xp Or is it any other program to use to see the diagrams and the results beter tha AvanWaves?
  13. N

    HSpice AvanWaves 2005-03 and 2007-03 crash on Windows XP

    Hello i was using the version 2003-03Sp1 without a problem. But i have instlled two newer versions : 2005-03 and 2007-3 and when i press to open the AvanWaves it crashes. The simulation is working fine. I have installed this versions to another computer and the wroking fine too. My computer is...
  14. N

    Labview & Hameg 8112-3

    Problem with the beta driver says Hameg.. i am waiting for the new one..
  15. N

    Labview & Hameg 8112-3

    I am using 6.1 and when i try to use the polymeter i open and run : For example i want to take measures of Voltage. I use from HM8112-3.llb the following in this order: HM8112-3_Open_VISA_GPIB.vi , HM8112-3_Set_Function_Range.vi and then i open from HM8112-3_DataRead.llb the HM8112-3_Read.vi...
  16. N

    Labview & Hameg 8112-3

    Here are the drivers (vi's) that i got from Hameg.. for different versions of Labview..
  17. N

    Labview & Hameg 8112-3

    hameg 8112-3 Hello, i want to use Hameg 8112-3 multimeter with my labview 6.1. Is there any ready driver, vi? Is there any tutorial how to build one??
  18. N

    HSpice and Current Source depented from Voltage

    .. i want to enter a rational exponent to the Voltage that is depented from the current source? is that possible? using the symbol ^ isnt correct as i tried.. Added after 34 minutes: i think i find it.. i have to use double star : **
  19. N

    Help me learn using AIM-Extract program

    aim-extract nobody?
  20. N

    Help me learn using AIM-Extract program

    aim-extract Has anybody managed to use this program ? I tried for some poly-Si TFT that i found in IEEE but i dont get good results

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