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.

Search results

  1. V

    what is the parasitical parameter of the AWG18 wire?

    awg 18 wire During my design , I need to build up the long wire model which need the parasitical parameter (such as conductance ,resistoance, inductance,capacitance) of the AWG18 wire. however, I can not find it, who has it ? would you please share the data ? Many many thanks.
  2. V

    transformer design, howto

    Any resources or PDFs is great helpful . i just need to finish a disign concerning flyback DC-DC . Thanks.
  3. V

    24V to 5V@2A Buck solution or Controller IC ,which is bette?

    5v 2a buck Requirement is "Cost" and "Efficient" . Here I select : LM25576 , MIC4576 , LT1766 .etc , However, could you tell me which one (or others) is more cheap and more efficient ? Thanks very much.
  4. V

    which MCU has better anti-vibrancy performance ? thx

    which MCU has better anti-vibrancy performance ? and which package has better anti-vibrancy ? Thanks.
  5. V

    what is capacitive loads ?

    what is capacitive loads ? what is inductive loads ? what is resistor loads ? Thanks.
  6. V

    when does BAV70_BAV56_BAV99 should be used ?

    The datasheet tell me that BAV70 is a dual-diode , but why and when should use dual-diode ? If I can use IN4148 , why need to use BAV70 ?? THAT is the question. Thanks for your answer.
  7. V

    How to deal with 24v->3.3V LDO circuit?

    24v to 3.3v How to deal with 24v->3.3V LDO circuit? ------------------------ Goal : input : +24V~~+30V output: 3.3V , 80mA ------------------------ I plan to use "LM317" . If I input the 24V directly to LM317's input, then the efficiency is too low ( efficiency = Vout/vin = 3.3/24...
  8. V

    what is result if analog input of A/D is bigger than Vref?

    what is the output of MAX1036(ADC), if the analog input of ADC is bigger than its Vref? A/D is MAX1036 if analog input is 4.096V , then it will output "11111111" , Then if analog input is 4.5V , MAX1036 will output what ? "11111111" still ??? (Note :Vcc = 5.0V ) Thanks.
  9. V

    Can anybody tell me how to understand the following circuit

    Where Q is a generic NPN transistor, such as BC817 . So what is the voltage of point "YYY" , if Vin = 40V ? and what is the voltage of point "YYY" , if Vin = 20V ? how to understand the circuit ? when Q isin state of saturation ? Thanks!!!
  10. V

    Can msp430x22x4 work correctly without any crystal outside ?

    slaa074 I have read the document of SLAA074 from TI. but still cannot know weather msp430x22x4 work correctly without any crystal outside. and what means "line frequency" ? Thanks!
  11. V

    help! how to achieve KVMswitches in VHDL??

    PLEASE HELP !! THANK YOU VERY MUCH
  12. V

    Help!! In need of PS/2 VHDL source ! thanks!

    I am in need of source code of VHDL OF -- PS/2 and RS232 --Protocal!! if you have it ,or you know how to program it in vhdl , please help me!:| thank you very much!:D
  13. V

    how to connect IDE hard disk to C6000's EMIF?

    may anybody kindly tell me how to do it? what is the schematic or tell me how to do so , I am in need of it , so Please, Thanks!!!:|
  14. V

    how to use BUFGDLL of Xilinx FPGA? help!!!

    bufgdll how to use bufgdll of Spartan2 fpga ? my design includes a Top module which will call some small module and some other modules. when i use u1: bufgdll(clk_in,clk) ; there errors !!! how to use BUFGDLL ? thanks!
  15. V

    who may tell me what is the diffence between dsp and fpga ?

    that is what is the advantages of fpga and why I need fpga from XILINX OR ALTERA instead of DSP from TI ? thanks!!
  16. V

    [ZUSB]not download program to AN2131Q!!!?? help!!

    PC can detect that the VID / PID of AN2131Q , but can not download program by "KEIL C"or "EZ-USB Control Panel" , what may be the problem ? how to deal with it ????????? please help me!!! Very Very thanks!!!
  17. V

    Can not Download by Jtag!!!! IMPact hint that...

    " ERROR:iMPACT:583 - '1': The idcode read from the device does not match the idcode in the bsdl File. INFO:iMPACT:1578 - '1': Device IDCODE : 00000000000000000000000000000000 INFO:iMPACT:1579 - '1': Expected IDCODE: 000011000010100000010010011 " How to deal with this error...
  18. V

    Why iMPact detect a xcv100 while actually it is a xc2s100 ??

    HELP !!! why ? I know that spartan2 is made on the base of virtex, however In this condition , may xc2s100 work ? thanks!!!
  19. V

    who may kindly offer a VHDL source used for debouncing ?!

    Thanks a lot and a lot of thanks!! :)
  20. V

    May FIFO be read and writen simultaneously ?

    FIFO was made by BlockRAM out of Spartan2 (xilinx) , may this FIFO be read and be writen at the same time ? thanks.

Part and Inventory Search

Top