Search results

  1. Roomi

    Need DS1620 in DIP Format urgently!

    How will u pay the shipping ???
  2. Roomi

    cell phone charger

    http://Then multiply 240 instead of 120! Simple..Isn't  it???
  3. Roomi

    Convert 0-30V 3A PSU to 5A or more

    Is there any advantage using  darlington power transistor like DTS4075A(30Amp) instead of 2N3055 ?
  4. Roomi

    Hi! I'm new here.

    Hi Feline,   Welcome to the forum...Can u explain uor project little more..??? 8)
  5. Roomi

    Free sample chips!

    Hi to all friends,     Can u mention some interesting, useful chip from MAXIM or DALLAS SEMI...
  6. Roomi

    What is this IC used for?

    hai hai Vivek,     U can make ac from dc with it but it require a transfromer to step up.... Best of luck...
  7. Roomi

    Convert 0-30V 3A PSU to 5A or more

    Hi Audioguru, A lot of thnks..I have another idea.If i use maxim's 2.5V shunt voltage reference instead of D8 then 5V should be obtained on the outout of U1 which doesn't require any voltage divider.What do u think..??? ??? Is there any need of finer adjustment pot(1K) if digital pot is...
  8. Roomi

    Convert 0-30V 3A PSU to 5A or more

    I have planned to use maxim digital pot instead of the two pots  voltage contrl and current cntrl(10K).But the maximum supply voltage of these maxim's ics is only 5V-6V).The datashhet also indicates, exceeding the voltage at any pin greater than suplly voltage may damage them.Is there any...
  9. Roomi

    Eagle Manual

    Hi Kachew,     I think it is very helpful to learn eagle or any software to practice & explore the software rather than using manual.When u learn something from manual and don't practice then u will not be able to memorize them in the future.On the other hand in the first method u might do...
  10. Roomi

    Free sample chips!

    Hello Jarmund,   Check this out------               www.semi-tech-inc.com               www.centralsemi.com Also give feedback after success.
  11. Roomi

    Convert 0-30V 3A PSU to 5A or more

    Many many thanks to all u friends. I am gonna buy several pieces.. 
  12. Roomi

    Convert 0-30V 3A PSU to 5A or more

    Thnks for uor comment but I heard that it will decrease the quality of filtering... 8)
  13. Roomi

    Convert 0-30V 3A PSU to 5A or more

    Thanks Audioguru for your comment.But I will not be able to buy on internet from Bangladesh.Is there any alternative ?
  14. Roomi

    Convert 0-30V 3A PSU to 5A or more

    I have planned to build the modified power supply unit and almost all the parts got collected.But the problem is here i did not find the huge capacitor like 15000uF 63V.I found a 10000uf but its voltage rating is 25v.now i am planning to manage it from a wasted  elecronic devices like...
  15. Roomi

    Convert your projects in 3D mode

    I am facing a problem with the 3d conversion.When i convert it then a horizontal bar is rendered in place of some of the components. I downloaded all the png files from the mentioned site.Are these library files? If so then where should I place these ?
  16. Roomi

    Free sample chips!

    How can I order free databook of their products from Texas Instrument..?? ??? Do you know any company from where I can order free databook ? ??? PLZ help me :'(
  17. Roomi

    What should I do with these 555 and 556 timers?

    From which company you ordered 555 & 556..??? >:(
  18. Roomi

    Visual Basic e-book required

    I want to learn visual basic. So I need visual basic tutorial e-book and also parallel port controlling using Vb e-book.Somebody please help.....!!! :'( 
  19. Roomi

    Free sample chips!

    Is there any company which provides power transformer samples...??? ???
  20. Roomi

    Convert 0-30V 3A PSU to 5A or more

    The problem is that here in my place low current 5.6V zener is not available.So i am thinking about the second way... ???Here is another idea which i haven't been tested but think it will solve the problem of output voltage going down.Making R6 variable(27K) and by adjusting the pot greater than...
Top