Recent content by BC107

  1. B

    ESR Meter project Puzzling Measurment

    Problem Sorted..!!! It seems the over reading was caused by the leakage inductance of the transformer, where the capacitor partially resonates with the inductive component to give a greater current than the short circuit. Many thanks to 'Jimmc' from EEVblog for this insite. This has now been...
  2. B

    ESR Meter project Puzzling Measurment

    Hi Hero999, yes I see your point I assumed only people interested in ers meters would answer, where Ludens circuit would be well known. Anyway I though "How are we supposed to know?" was a bit cryptic, where it could have been "How are we supposed to know? unless you show us the circuit!"...
  3. B

    ESR Meter project Puzzling Measurment

    Well i'm aiming my question at electronic engineers with some 'mature' experience to reply, sorry if I missed the mark.! (with you)
  4. B

    ESR Meter project Puzzling Measurment

    Hi I'v just finished an ESR meter based on Ludens simple analog circuit, which seems to work very well. I did a small mod to broaden the range a bit, so 4.7 ohm is below mid scale great. Works fine. Here's the Puzzle!. I short the test leads out to zero the meter fine. Then If I measure a...
See more
Top