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Recent content by drtime

  1. D

    re: charge pump design

    Charge-pump voltage converters use ceramic or electrolytic capacitors to store and transfer energy. there are not many info about charge pump online,i mean google,maybe u can refer to pdf file below.
  2. D

    Constant Voltage/Constant Current Circuit?

    constant voltage electrical circuit for charging what is your source? maybe u can try with dc-dc converter
  3. D

    [need help]video filter tesing board

    i'm designing a video filter testing board.i refer to other design,all of them putting three capacitors(0.1u,0.01u and 4.7u) in parallel at the Vcc input pin.the source to Vcc is 5Vdc.what's the function for those capacitors?

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