30 Sep
2015
30 Sep
'15
4:48 a.m.
From: Eugene (W2HX)
to model this using ideal components, we show a
resistor in parallel to
the capacitor ... This modeled parallel resistor represents the leakage
current.
...
because it is not ideal, some power is dissipated. This dissipated
power is represented by a series resistance. Because an idealized
circuit with a cap and a resistor in series will not pass DC current,
this circuit must be tested at AC.
So I'm slightly confused; you talk about the model being a parallel resistor
(which I get), but then switch to a series resistor. Why the switch?
Noel
30 Sep
30 Sep
5:06 a.m.
to model this
using ideal components, [...]
So I'm slightly confused; you talk about the
model being a parallel
resistor (which I get), but then switch to a series resistor. Why
the switch? 
11:24 a.m.
Essentially these are two different measurements meant to measure a different property of
the capacitor. Capacitors have many properties, many we know such as capacitance, working
voltage, temp coefficient, etc. Add to that list both leakage current (parallel
resistance) and ESR (series resistance). They tell you different things about the
capacitor's behavior.
Hope this helps.
Regards
Eugene
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Noel Chiappa
Sent: Wednesday, September 30, 2015 12:49 PM
To: cctalk at classiccmp.org
Cc: jnc at mercury.lcs.mit.edu
Subject: Re: ESR Meter Recommendations
From: Eugene (W2HX)
to model this using ideal components, we show a
resistor in parallel to
the capacitor ... This modeled parallel resistor represents the leakage
current.
...
because it is not ideal, some power is dissipated. This dissipated
power is represented by a series resistance. Because an idealized
circuit with a cap and a resistor in series will not pass DC current,
this circuit must be tested at AC.
So I'm slightly confused; you talk about the model being a parallel resistor (which I
get), but then switch to a series resistor. Why the switch?
Noel
12:31 p.m.
On 9/30/2015 12:24 PM, W2HX wrote:
Essentially these are two different measurements meant
to measure a
different property of the capacitor. Capacitors have many properties,
many we know such as capacitance, working voltage, temp coefficient,
etc. Add to that list both leakage current (parallel resistance) and
ESR (series resistance). They tell you different things about the
capacitor's behavior.
Hope this helps. Regards Eugene
Unless he's testing a flux capacitor...
roll that bench to 88 miles an hour
Ben.
12:39 p.m.
On Wed, Sep 30, 2015 at 12:31 PM, ben <bfranchuk at jetnet.ab.ca> wrote:
On 9/30/2015 12:24 PM, W2HX wrote:
Since they made 3 of them, we can conclude that flux capacitors have low
ESR, yes?
-- Charles
Essentially these are two different measurements
meant to measure a
different property of the capacitor. Capacitors have many properties,
many we know such as capacitance, working voltage, temp coefficient,
etc. Add to that list both leakage current (parallel resistance) and
ESR (series resistance). They tell you different things about the
capacitor's behavior.
Hope this helps. Regards Eugene
Unless he's testing a flux capacitor...
roll that bench to 88 miles an hour
3140
days inactive
3140
days old
4 comments
5 participants
participants (5)
-
bfranchuk＠jetnet.ab.ca -
charles.unix.pro＠gmail.com -
jnc＠mercury.lcs.mit.edu -
mouse＠Rodents-Montreal.ORG -
w2hx＠w2hx.com