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undervoltage lockout circuit explanation

Discussion in 'General Electronics Discussion' started by lotus, Dec 13, 2010.

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  1. lotus

    lotus

    14
    0
    Dec 4, 2010
    I have attached an undervoltage lockout circuit. i hav simulated it for a continuous square wave but it works only for first positive cycle. Whats the reason for that?
     

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Square wave? Where -- as the battery voltage?

    if so...

    What range of voltages 0 and 4.1, or something else? and what frequency (or period)?

    and...

    Do you think a square wave is the sort of waveform that models the battery's behaviour?
     
  3. lotus

    lotus

    14
    0
    Dec 4, 2010
    I hav designed it for 14V and hav applied square wave to create undervoltage condition. i hav also attached the input and output waveforms
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Where is your input? Is it the battery voltage? (since the circuit has no input really).

    And again, I ask you. Do you think a square wave is what you're likely to see coming from a battery? Think about another waveform. One thats kinda more gradual would be better (to simulate voltage dropping over time, and then rising as it charges).
     
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