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Help : PWM generation

Discussion in 'Power Electronics' started by Hirak, Oct 17, 2020 at 7:43 PM.

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  1. Hirak

    Hirak

    2
    0
    Saturday
    Hi ,
    I want to generate voltage control PWM signal(0-5V) duty cycle vary from 10% to 90% and at the same time i want to change frequency with changing voltage whenever is required.
    please help me to design that.

    Thanking you,
    Pratik
     
  2. Alec_t

    Alec_t

    2,884
    770
    Jul 7, 2015
    Welcome to EP!
    This circuit may meet your needs. Duty cycle is voltage-controlled but the frequency is controlled with a variable resistor.
    VariableFreqAndDuty.png
     
  3. Hirak

    Hirak

    2
    0
    Saturday
    hi,
    i am using the circuit in HV application. can i used that circuit?
     
  4. Bluejets

    Bluejets

    4,210
    893
    Oct 5, 2014
    The IC inverter used is around 5v (6V max) so that's pretty much the limit.
    No idea what you mean "use in a hv circuit".
    Possible to interface with an opto of some description.

    Best show the circuit.
     
    Last edited: Oct 17, 2020 at 11:01 PM
  5. Alec_t

    Alec_t

    2,884
    770
    Jul 7, 2015
    Agreed. Post your intended HV circuit, including voltage, frequency and current particulars.
     
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