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  1. EngApprentice

    Impedance Measurement of a DC-DC power supply

    Thanks Gunnar, I'll probably find the transformer with the least attenuation with respect to my frequency range before venturing using a switch transistor. They are all very good suggestions.
  2. EngApprentice

    Impedance Measurement of a DC-DC power supply

    I was suggested to inject the ac signal through an isolated transformer, elimnates grounding issues and additional impedance might have introduced using caps and resistors! But skogsgurra was right about the insufficient current sourcing out of the generator, I see a voltage attenuation going...
  3. EngApprentice

    Impedance Measurement of a DC-DC power supply

    Thanks skogsgurra! I'm a fresh grad so please bare with me. For the current measurement, do I measure the peak current injecting from the signal source through the capacitor? Could I perform the test using a simple signal generator? Same setup both for input and output? Yeah, impedance...
  4. EngApprentice

    Impedance Measurement of a DC-DC power supply

    How do you measure the input and output impedance of a dc-dc power supply? I need to characterize it from DC to 1MHz and I am wondering if an external circuitry has to be setup to measure it? I have tried the website and the FAQ and some suggested that input impedance is as simple as Z=V/I and...

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