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555 Timer

Discussion in 'Power Electronics' started by Cabebelinho, Nov 22, 2020.

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  1. Cabebelinho

    Cabebelinho

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    Nov 22, 2020
    Is possible to design precise STEP UP or STEP DOWN power supply using 555timer?
     
  2. Martaine2005

    Martaine2005

    3,554
    966
    May 12, 2015
    Of course.
     
  3. WHONOES

    WHONOES

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    319
    May 20, 2017
    Indeed it is. Do you have anything particular in mind?
     
    Martaine2005 likes this.
  4. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Depends on what you think is "precise".
     
  5. Cabebelinho

    Cabebelinho

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    0
    Nov 22, 2020
    Somebody help me. I'm trying to make a step up 3.7V to 10V converter using 555 timer with 20KHz frequency, with 63℅ duty cycle, but when I try to simulate the circuit in Proteus v8.9 the information that appears is (Simulation is not running in real time due excessive CPU load. Somebody help me to understand what is happen?
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

    11,646
    2,691
    Nov 17, 2011
    For detailed support start by showing us your circuit diagram.
    Easy: the simulator takes longer to simulate the circuit than the circuit would use in real time. This is typical and is to be expected for most circuits. No need to worry.
     
  7. Cabebelinho

    Cabebelinho

    3
    0
    Nov 22, 2020
    I'm trying to do DC STEP UP converter 3.7V to 10V 2A using 555 timer with 20kHz and duty cycle of 63℅, using all calcution procedure, and the result in Proteus is: Simulation is not running in real time due excessive CPU load (in Proteus v8.9). The output voltage is 40.2 and output current of 1A to 100A= up and down.
    do you think the error is from the simulator?

    Please

    Thank you
     
  8. WHONOES

    WHONOES

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    319
    May 20, 2017
    I echo Harald. Please supply a schematic so that we can see what you are trying to do otherwise we are totally in the dark.
     
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