Re: Impedance

From: Rich Grise <rich@xxxxxxxxxxx>
Date: Sun, 23 Jul 2006 16:15:17 GMT

On Sun, 23 Jul 2006 02:19:46 +0000, jasen wrote:

On 2006-07-21, Roger Dewhurst <dewhurst@xxxxxxxxxx> wrote:

Does a capacitor in an AC circuit heat up as would a resistor offering
an equivalent resistance?

not anywhere near as much as a resistor would. They aren't exactly
equivalent to resistors.

It would heat up exactly the same amount, if its resistance is equal to
the equivalent series resistance (ESR) of the cap.

That's kinda how ESR is defined, I think. :-)

Cheers!
Rich

.

References:
- Impedance
  - From: Roger Dewhurst
- Re: Impedance
  - From: jasen

Prev by Date: Re: How Do You Sort Your 7400 Series ICs?
Next by Date: Re: OT: RC boat info wanted
Previous by thread: Re: Impedance
Next by thread: Researching maximum life span of the power supply of a small satellite.
Index(es):
- Date
- Thread

Relevant Pages

Re: Detecting the peak value
... use, keeping all measurements ratiometric if possible, and use resistance as ... will know the capacitance before I measure the ESR and can account for Z. I ... and a reference resistance and calculate the ESR from there. ... For you high current range simply add an NPN follower to the OpAmp. ...
(sci.electronics.design)
Re: Detecting the peak value
... use, keeping all measurements ratiometric if possible, and use resistance as ... will know the capacitance before I measure the ESR and can account for Z. I ... and a reference resistance and calculate the ESR from there. ... For you high current range simply add an NPN follower to the OpAmp. ...
(sci.electronics.design)
Re: Capacitor discharge question
... 60uF electrolytic capacitor, but not excessively so ... shows that 3 ohms of esr exceeds 1/Xc above 884Hz, ... if you drop 0.1 ohms suddenly across the hypothetical 60uF cap ... across the internal series resistance. ...
(sci.electronics.design)
Re: Detecting the peak value
... use, keeping all measurements ratiometric if possible, and use resistance as ... 100khz low distortion sine wave, however 1-2% accuracy was the best it ... and a reference resistance and calculate the ESR from there. ...
(sci.electronics.design)
Re: Detecting the peak value
... use, keeping all measurements ratiometric if possible, and use resistance ... 100khz low distortion sine wave, however 1-2% accuracy was the best it ... and a reference resistance and calculate the ESR from there. ...
(sci.electronics.design)