[TenTec] ESR vs Leakage

[Peter Bertini]

ESR can be thought of as a resistor in series with a capacitor.  Ideally, a
capacitor would be purely inductive, with no resistive losses.

ESR should be constant, regardless of frequency, INMHO... for what it is
worth... impedance will change with frequency, and many inexpensive ESR
meters are frequency sensitive in that regard.

A shorted capacitor will read perfect on an ESR meter.

Pete