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Recent content by zula

  1. Z

    Normally Closed CMOS Switch without power

    Hi, Actually my requirement is really simple. I need to NC device without power. And it should be very cheap. I know that i can design my circuit with SSR but i didnt prefer it. At this point i think there is no MOS device that NC without power. So i will go with SSR. Thank you for all your...
  2. Z

    Normally Closed CMOS Switch without power

    Hi All, Thanks for replies. But as i said we dont prefer doing this with relays because of cost issues. If there is no alternative solution of course we will use relay. But at this point i will continue my researches. Dear FVM, Are you saying that depletion mode fets can be useful for my...
  3. Z

    Normally Closed CMOS Switch without power

    dear ravindragudi, Thanks for your reply. Basically there are two communication line have to be connected when there is no power. When the power is on, MCU unit will break this connected lines and doing something. Regards.
  4. Z

    Normally Closed CMOS Switch without power

    Hi guys, I need a cmos switch that will shorted input to output(NC) while there is no power(VCC). I dont know is it possible? Normally we can do this with relays but we dont prefer to use relays in our projects. If you can suggest me some components i will be very happy. Regards.
  5. Z

    problem with notch filter implementation

    As you said i can match the values with potentiometer but i have to plan production also. I will produce 1000qty of this boards. So it is really unacceptable time loss for me. I dont understand how engineers do this type of filters with large quantities. Anyway thank you very much for your helps.
  6. Z

    problem with notch filter implementation

    Hi Bread, It is really hard to realize this filters on the real pcbs. Because iam trying to use %1 tolerances for resistors and capacitors. Even with %1 it is a huge difference. When i measure 1.5nF with multimeter i see it is 2nF instead of 1.5nF.(But i am not sure my multimeters sensivities)...
  7. Z

    problem with notch filter implementation

    thank you for all your responses. Iwill change my high pass filters metodology. Anyway it is not reaaly important for my design. notch is much more important for me. Actually i didnt test high pass i bypassed it on the pcb. At this point thank you for your simulation Bread but ive already did...
  8. Z

    problem with notch filter implementation

    Hi all, Iam trying to implement notch filter. I used FilterLab software to design it. Circuit is below. Iam working on an Acustic Device that produce 880Hz tone. On the other hand i have a microphone circuit to detect ambient voice level. So i have to eliminate 880Hz at the microphone outputs...
  9. Z

    Hamamatsu CMOS Image Sensor Problem (S10834)

    yes we did and we get all bytes are zero.
  10. Z

    Hamamatsu CMOS Image Sensor Problem (S10834)

    Hi Inti, You are saying about image sensors saturation output. If you look photodiodes electrical characteristics it says saturation voltage is around 2.2V - 2.9V and value of ADC is 450. There is two componenet inside of device. One of them image sensor and the other one is photodiode to...
  11. Z

    Hamamatsu CMOS Image Sensor Problem (S10834)

    hi keith, i take some photo of basic things here is the pictures this is screw and there is a pin header; S10834 has a 10bit ADC to measure XRAY level from photodiode and normally it gives me around 430 that is equally about ~2.2V. When there is a xray it reach up to just 460.
  12. Z

    Hamamatsu CMOS Image Sensor Problem (S10834)

    Hi all, We are designing a Xray image sensor for dental usage. We are using S10834 image sensor from hamamatsu and we are using XC3S50 fpfa to control S10834 and FT2232H to send pixels to PC. And we have a C# program to getting pixels from FT2232h and creating image on PC. And we are using...
  13. Z

    ft2232h acting like ft4232h

    hi all, iam trying to work with the sync fifo mode with ft2232h. but there is strange problem? when fpga hasnt any code ft2232h is really ft2232h (iam cheking it with ft_prog) but after i progrom to my fpga with my code then iam cheking again it with ft_prog it says there is ft4232h devices...
  14. Z

    eagle a basic question

    ive already converted the schematics now iam working on pcb. and i used these .ulp's but none of them works on pcb. because of % problem. the ulp that you send me link doesnt work and i think you are wrong about % issues he says "Note that values of any part exlude string like "1%". and i...
  15. Z

    eagle a basic question

    Hi all, ıam currently altium user and now i have to export some files to altium from eagle. to do this i have to remove all the % texts from the eagle files . and iam trying to find easy way to do this? in altium i can find the all the texts with "find similar" function. but i dont know if...
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