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Good design for a PWM that has a adjustable start current and . . .

  1. Dec 20, 2006 #1
    any body have a good design for a p.w.m that has a adjustable start current and ramp up time
     
  2. jcsd
  3. Dec 21, 2006 #2

    berkeman

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    Staff: Mentor

    That's too general a question, rockstar. You need to say more about the application, voltages, current levels, etc. And whether you want to use a simple analog circuit, or a more sophisticated microcontroller (uC) based circuit to do the PWM. Is this for the RC vehicle application that you mentioned in another post? If so, what does the controller look like in the standard circuit before you started modifying it?
     
  4. Dec 21, 2006 #3
    there is no standard circuit to start from. i was hoping something as simple as a 555 ic and it'll be controlling the H bridge mentioned in the other post. for simplicity i just built a standard h bridge for now out of uprated parts, the H-bridge and the P.w.m. will be a seperate chip from the radio controls, for the sake of prototyping (sorry about the vague question)
     
  5. Dec 21, 2006 #4

    berkeman

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    Staff: Mentor

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