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Recent content by Ultor

  1. U

    photodiode detector circuit with amplifier

    photodiode detector If you have no reference phase how do you propose to detect movements? Also. I have designed a quite similar method.
  2. U

    Need to measure battery internal resistance

    Does anyone know how I can measure a battery's internal resistance while it's still connected to a circuit? I have a need to measure a lead-acid cell's internal resistance. Anyone with some ideas? Thanks Robert
  3. U

    Need to measure the internal resistance of a battery

    how to measure internal resistance of a battery What's a good method to periodically measure the internal resistance of a battery while the battery is in use. If that's not possible, how can I measure the battery's internal resistance while it is still connected but not in use? Any ideas...

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