Quote:
Originally Posted by BrianG
You can't measure ESR with an ohmmeter. A meter outputs a small voltage and either measures current flow or measures the v drop on an internal resistor, and then calculates the resistance. If you put a meter on it, you'll see the resistance start very low and then rise until infinity.
This resistance, which should be called ESR for this discussion, can not be confused with Xc, which is capacitive reactance. Xc is a "resistance" as well, but the current is 90* out of phase with the voltage and the Xc "resistance" value changes with frequency (hence "reactance"). ESR is not Xc, but sorta like the 0* phase DC resistance.
This meter is something one can use to measure ESR: http://secure.transtronics.com/CAP-WIZARD.htm |
Precisely!
sikeston34m.... nomods sent me a burnt out Quark with what a appears to be a good brains board on it, but unfortunately, i popped it onto my Quark, but no luck, doesn't even turn on. I noticed it has two little tiny caps missing from the board near the motor phase sensor end (where you solder it).
If anyone has a Quark they are willing to part with (that has overheated, or w/e) and knows the brain board is fine.... I am accepting them!
