Search results

  1. nikhil arora

    heat sink for transfomer

    how to reduce transformer heating how to take away heat from the transfomer as we use heatsing for transistors is this possible with transformer My ckt needs 5.1V@200mA i have used 9Vac transformer 500mA rating on its box i cann't say how much it can deliver. Now i am drawing only 200mA even...
  2. nikhil arora

    how to design very small 6V power supply @100mA

    i have little idea that this can be done by two methods 1> Tansformerless design 2> Switching power supply design now i want to have very small transformer or no transformer at all
  3. nikhil arora

    computer games

    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...
  4. nikhil arora

    Plz help me in understanding this RF reciever

    this was used in car alarm reciever 433Mhz, plz help me how this thing work
  5. nikhil arora

    Serial communincation between two Microcontroller using IR

    I want to make serial communication between two microcontroller using IR. but i donot want to use IR reciever moudels (from vishay) instead i want to use simple IR led as  transmitter and IR photo-diode as reciever. to decrease the cost.
  6. nikhil arora

    equivalent of these FETS and transistors

    can any one suggest me equivalent of these these are not avliable in my city. Si9410DY MTD20N03HDL ZTX694B thanks in advance
  7. nikhil arora

    3-5V DC @50mA from 230V AC without transformer

    Can any one suggest a Circuit for getting 3-5V DC @50mA from 230V AC without transformer or any other ways.
  8. nikhil arora

    5V to 12V with 750mAh

    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...
  9. nikhil arora

    RF 433 or 315Mhz module antenna problem

    I have attached the schematic diagarm with little explanation on it. the main part we have to see is the Antenna ouput of the RF module. We have to connect this ouput to the antenna for this we use tracks to the antenna connector on PCB. Now for short distances we can use this track(if made...
  10. nikhil arora

    multisim 7 problem adding new components

    how i can get new components in multisim 7 i want to add few more ic like cd4538 etc. how can we do that
Top