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  1. karthikeid

    atmega8 volt/amp meter

    hi this is the circuit i did, but nothing seems to be working only the backlight is glowing on i have constructed the PDIP version of this which was posted at http://elfly.pl/multimetr/multimetr_en_DIP.htm http://www.electronics-lab.com/projects/test/007/index.html
  2. karthikeid

    voltage divider doubt

    hi i have posted a circuit wch is a voltade divider in this wat must be the wattage of the resistor?? the load is the 4leds in parallel. tell me the calculation too.
  3. karthikeid

    LED driver

    hi how to drive led and supply constant current?? circuit for driving 50led's in series/parallel @30mA per led. ???
  4. karthikeid

    how to use the transmitter and reciver modules

    hi how to use these transmitter to transmit audio...here is the link of one type pf transmitter http://robokits.co.in/shop/index.php?main_page=product_info&products_id=75
  5. karthikeid

    audio amplifiers

    hi i have a doubt that an 20W amplifier can be used to 60W speakers ??? if not post a circuit for 2x60W audio amplifier....
  6. karthikeid

    transmitter module help

    hi using the fm transmitter module how to transmit and receiver voice.. link for that fm module http://onlinetps.com/shop/index.php?main_page=product_info&cPath=126_127&products_id=454 pls help me to construct a circuit.... ???
  7. karthikeid

    how to test a condenser mic

    hi how test a condenser mic ???
  8. karthikeid

    IFT coil

    hi how to find the value of the IFT coil??? i c a red color plastic or an grey color how to identify it ???
  9. karthikeid

    LED's

    hi i need a circuit to lit 50 leds in ac voltage 230v,50Hz...
  10. karthikeid

    not able to upload images

    hi i am not able to upload pictures to the threads.. the info. displayed is The attachments upload directory is not writable what to do ???
  11. karthikeid

    Fm transmitter

    hi i need a fm transmitter circuit that works properly, very urgent pls help me. ::)
  12. karthikeid

    using PIR(Passive infrared sensor) need a counter

    hi using the PIR need a circuit that counts using a display when it detects. check this for pir http://en.wikipedia.org/wiki/Passive_infrared_sensor
  13. karthikeid

    forum topic missing

    hi what happen to the power supply forum topic was it been removed ???
  14. karthikeid

    optocoupler

    hi pls help me with a simple circuit using optocoupler using PC814 or some  ???other one
  15. karthikeid

    multisim

    i am using multisim 10 someone pls tell me how to add components to multisim and for the IC CD4022B  ??? :(
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