Jump to content
Electronics-Lab.com Community

nikhil arora

Members
  • Posts

    37
  • Joined

  • Last visited

    Never

Posts posted by nikhil arora

  1. i think this is the problem
    so how to check the transfomer quality
    in my city the quality is poor most of the times
    is there any method to check transformer quality

    I  tested my ckt without load and even without regulator ckt only transformer was kept on and i observed that 70-80% percentange of heating was due to transformer itself.

  2. i have done that in very good manner using TSOP1738 as reciever and a IR led driven by NE555 as transmitter. now to send signals you just have to connect the reset pin of NE555 to Tx of 89c51 and that it and write a simple test program.

    now TSOP1738 is costlier then simple ir-photodiode but 1738 has many features like noise immunity, IR light intensity variation won't affect your link only decreases or increases the range......

    Now we know we cannot achieve this we IR-photodiode so i have looking for nice ckt to work with using photodiode..... which is not just amplifier or comparator..........

  3. i have started a google group
    and I invite you there
    this group is for games, especially for those who have slow PC like PIII or PII
    or celeron or similar and low end graphics card or use onboard graphics cards which comes with motherboard

    http://groups.google.co.in/group/game4slowpc

    post here few links and start some discussion

  4. I have a battery backup system with 6V SLA(lead acid) battery,
    But few ckts work on 12V which are used rarely. but they are important.
    so how do i get it.

    I know I need step-up DC-DC converter
    I will be glad to know the chips and links to their datasheets.

    I have gone through

    h**p://www.electronics-lab.com/projects/power/030/

    but i need more




×
  • Create New...