Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Recent content by rmmstn

  1. R

    PSPICE error : ERROR(ORPSIM-16364): Invalid device in subcircuit

    Hello again, I tried to do some implementations on top of the simulation and my errors changed. Right below, there is a simulation window where you can see the lines and errors. I guess that spice is not reading the device that I created. What do you suggest? Moreover, I changed the code ...
  2. R

    PSPICE error : ERROR(ORPSIM-16364): Invalid device in subcircuit

    Hello, I am currently working on a project in which a new model of device has to be added to the SPICE library. However, when I used the code below, I am getting the error which is : ERROR(ORPSIM-16364): Invalid device in subcircuit. According to my investigations, I have seen that one...
  3. R

    help udrestanding the values in this table

    It is stated that Cmax is -19dB so in the righthand side of the table, the numbers are given in such a way that we can obtain -19dB. When you use 0.035=C1, you are getting the closest number to -19dB. Normally we use 10^(-C(dB)/20) , you can see this calculation in the beginning of some...
  4. R

    Chip is getting warmer

    Especially, 47kohm at the end? Might it be used for impedance matching?
  5. R

    Chip is getting warmer

    I asked the schematic to someone else but i couldnt fix the issue, so I want to ask to u too. How can i modify the circuit which I attached below? it is input is connected to 50 ohm system, its output is connected to input of audio port of the computer? There are some resistors which are...
  6. R

    Chip is getting warmer

    Hi, Can you tell why an IC might get warmer even if you stay far away from your rated voltage? I asked something close to this for max414cpd before. Probably, the chip is not the issue because i tried giving 10v to two different identical ICs . Both gave me the same problem? In the datasheet it...
  7. R

    Impedance matching on CST

    Thank u all for turning back. AKHİLPAULV, I am attaching the screenshots here for you. One is showing the error, one is showing according to what I put the waveguide port. RADIOHEAD, I did what you said. It seems fine.I wasn't adjusting 50ohm btw, I know that when u put a port in cst, it is...
  8. R

    Radar project, video amplifier is not working

    Since I cannot get a nice respond from the chip I talked about, I have decided to build a new one on my own, and if we assume the output will go to the audio port of the computer, what should I take as the input impedance of the audio port, what do you think? On the internet, Im seeing very...
  9. R

    Radar project, video amplifier is not working

    Video amplifier has two stages there as you can see. One is filter which I need to use to prevent pc alias. According to my investigations, sound card of the laptop is 22kHz so I need to put it not to send something above that. The other one is gain stage which I need to use to see better...
  10. R

    What methods exist for division in FPGA

    I am not sure if it will be your answer but there are some algorithms for division. Booth's algorithm is the hardest one to be implemented if you can implement it, the others would be easier to follow. However, it is hard to implement and you need to create a datapath for it (2 registers, 1...
  11. R

    Radar project, video amplifier is not working

    Hi, Currently, I am working on a radar project which is given me and it can be found from mit opensource.(I am also attaching the schematic here). However, when I build this circuit, Im having a trouble with video amplifier stage. First of all, when I give +12volt from the ic's 4th node, my ic...
  12. R

    Impedance matching on CST

    Hello :) Currently, I am trying to create a network for matching 50ohms to 100ohms in CST. However, im having trouble while introducing the port impedances. My investigations show that discreet port would not be accurate as waveguide port. Therefore, I placed one waveguide port which is 50 ohm...

Part and Inventory Search

Back
Top