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Recent content by thuvu

  1. T

    Resistor question...again

    The current depends on the load that you will use. Please be more specific about the load. The 10Ohm resistor wont work.
  2. T

    Bin Laden is from Glasgow

    THE ONLY WAY :)
  3. T

    serial communication between two PCs

    how to do serial communication between two pc look at this site
  4. T

    Mosfet switch problem

    mosfet switch problem Hi everyone, I want to use some mosfets as switches. I will control them with a microcontroller (3.3V signals). The problem is that in some mosfets the Source is not connected to ground so I am not sure if the Vgs signal will work. In my circuit I have two pairs of...
  5. T

    How can I program ARM microcontrollers?

    how can programe arm I am thinking to buy MCB2140 Evaluation Board from www.keil.com for ARM from Philips. But I also want to program many of them for my projects and that's why I need your help. The ULINK cost €300 and I am not going to pay for that if there is another way.
  6. T

    How can I program ARM microcontrollers?

    programming internal flash through jtag arm nxp Could you provide some useful links for programming with RS232. Thank you
  7. T

    How can I program ARM microcontrollers?

    how to program arm7 Then I can create my own PCB, solder the parts and then program the ARM using a JTAG tool from any company. Right?
  8. T

    How can I program ARM microcontrollers?

    how to start programming arm Hi everyone, I want to start programming ARM microcontrollers and I was searching for some evaluation boards (Keil, Olimex...). I noticed that the ARM chip is soldered on these boards and I can't use them to program other ARM for my PCB's. (I used to work with...
  9. T

    inductive loops for traffic management

    Thank you for your replies but I have a problem with the analog part of the project. Does anyone have a schematic for such a circuit?
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    inductive loops for traffic management

    Hi everyone, I am working on a project fot traffic control management. I want to be able to identify vehicles by their electromagnetic signature. When a car passes over a inductive loop creates a unique waveform. If it passes again I want to compare the waveforms to see if it is the same model...
  11. T

    how we calculate Cox?

    how to calculate cox Thanks Steven
  12. T

    how we calculate Cox?

    calculate cox Hi, I have the following model .model Mbreakp PMOS level=2 ld=0.21e-6 kp=28e-6 vto=-0.87 gamma=0.70 phi=0.72 cj=0.62e-3 cjsw=0.26e-9 cgso=0.42e-9 cgdo=0.42e-9 cgbo=0.3e-9 nsub=8.8e16 nfs=1e10 tox=200e-10 xj=0.3e-6 ucrit=1.2e4 uexp=0.063 delta=2 kf=7e-15 af=1.2 and I want to...
  13. T

    DAA modules and DTMF decoders

    So I use a optocoupler with the appropriate ratio Vin:Vout in order to transfor the high voltage Ring Signal to 5V? What if I want to send a signal to the line?
  14. T

    DAA modules and DTMF decoders

    Ok for the DTMF. What about Ring and Hook signal?
  15. T

    DAA modules and DTMF decoders

    Thank you but is there any ic to do this detection?
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