i want to use mosfet switching circuit instead of relay

Discussion in 'Embedded Systems and Microcontrollers' started by krishnanvsalim, May 25, 2011.

  1. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
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    hi there,
    i want a mosfet switching circuit as a replacement for 2/2 relay,
    i want to change the driving voltage from 12v to 5v,i was told that its much reliable to use mosfet switching circuit instead of using a relay.
    please any one provide one for me..
     
  2. Kermit2

    AAC Fanatic!

    Feb 5, 2010
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  3. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
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    thank u....
     
  4. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
    19
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    sir i am not able to design this:(:(
    mosfet switching time and this two by two relay,its so confusing please help...
     
  5. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
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    hi there some one asked me to use a CD4016 instead.
    is it reliable???plse provide me with some details:)
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
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    A relay can handle large voltages and high currents, plus AC voltages. FET's can switch large DC voltages and currents. A CD4016 (use a 4066 instead) can handle very small voltages and almost no current.

    What voltage and current are you interested in switching? May we assume than a "teo by two" relay is a double pole type? Is that double pole & double throw?
     
    krishnanvsalim likes this.
  7. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
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    actually i have drawn some ckt using cd4016b ic,
    for creating a DPDT type relay equivalent,i had to use two cd4016b's,
    (each IC comprise of four switches)
    one switch for relay control,and four switches for i/p o/p switching.
    (current?? well may be in milli ampere range,thats all.
    voltage maximum of 12v{this 12v is an input to be switched}
    and supply voltage is 5v.
     
  8. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
    19
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    in the datasheet they are telling about some out put filters and all,
    is it necessory?? i was not able to inderstand those things well,so please
    give me some help:)
     
  9. krishnanvsalim

    Thread Starter New Member

    May 25, 2011
    19
    0
    oh sorry one more thing to ask..
    whats the advantage of 4066 over 4016b???
    please do replay:)
     
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