Is it always OK to replace a regular electrolytic capacitor with a low
ESR version in things like the vertical and horizontal sections of a
CRT monitor or TV?

Are there any cases where low ESR electrolytics should never be
substituted?

Some small switchmode power supply chips want the filter cap ESR to be
between certain limits, but they're not very common. Generally there
shouldn't be a problem with new caps having lower ESR than the
originals.


On 25 Sep 2005 20:51:44 -0700, "larry moe 'n curly"
wrote:

Is it always OK to replace a regular electrolytic capacitor with a low
ESR version in things like the vertical and horizontal sections of a
CRT monitor or TV?

Are there any cases where low ESR electrolytics should never be
substituted?

Bob old boy. Is this you ?? ESR connection would suggest that it is. Give me
a mail to catch up if so.

Geoff


"Bob Parker" wrote in message
...
Some small switchmode power supply chips want the filter cap ESR to be
between certain limits, but they're not very common. Generally there
shouldn't be a problem with new caps having lower ESR than the
originals.


On 25 Sep 2005 20:51:44 -0700, "larry moe 'n curly"
wrote:

Is it always OK to replace a regular electrolytic capacitor with a low
ESR version in things like the vertical and horizontal sections of a
CRT monitor or TV?

Are there any cases where low ESR electrolytics should never be
substituted?

On Mon, 26 Sep 2005 23:14:51 GMT, "Arfa Daily"
wrote:

Bob old boy. Is this you ?? ESR connection would suggest that it is. Give me
a mail to catch up if so.

Geoff


G'day Geoff!
I think it's me. I only recently realized that my despammed.com
address is completely dead, like Despammed.com itself. Apologies to
anyone who's tried to contact me through it.
You can send me an e-mail by going to
http://members.ozemail.com.au/~bobpar/contact.htm and clicking on the
link there. My e-mail situation's been so destroyed by US spammer
parasites that these days I'm going to extremes to prevent it from
happening yet again.

Regards
Bob

Bob Parker wrote:

On Mon, 26 Sep 2005 23:14:51 GMT, "Arfa Daily"
wrote:

Bob old boy. Is this you ?? ESR connection would suggest that it is. Give me
a mail to catch up if so.

Geoff

G'day Geoff!
I think it's me. I only recently realized that my despammed.com
address is completely dead, like Despammed.com itself. Apologies to
anyone who's tried to contact me through it.
You can send me an e-mail by going to
http://members.ozemail.com.au/~bobpar/contact.htm and clicking on the
link there. My e-mail situation's been so destroyed by US spammer
parasites that these days I'm going to extremes to prevent it from
happening yet again.

Regards
Bob


Bob, have you tried "Mailwasher"? I use it to see what is on the
server and delete or bounce the crap before I log in and download the
e-mail. Its a small program (1.5 MB), and works fairly well. You can
e-mail me for details.
--
?

Michael A. Terrell
Central Florida

Thanks Michael,
I've been running Mailwasher for maybe the last 3+ years. There
have been times when I wouldn't have been able to use some of my
accounts without it. However I don't like its ability to falsely put
real e-mail addresses into the blacklist without warning, causing me
to delete real e-mails and send false SpamCop reports.
By closing down and changing e-mail account names as required,
which is a huge pain in the butt, right now I have only a slight spam
problem, and I'm going to great lengths to keep it that way. Every
spam I get now is reported ASAP through SpamCop.
Apart from that, how are the 'gators these days?

Rgds
Bob


On Tue, 27 Sep 2005 20:22:14 GMT, "Michael A. Terrell"
wrote:

Bob, have you tried "Mailwasher"? I use it to see what is on the
server and delete or bounce the crap before I log in and download the
e-mail. Its a small program (1.5 MB), and works fairly well. You can
e-mail me for details.

On 25 Sep 2005 20:51:44 -0700, "larry moe 'n curly"
wrote:

Is it always OK to replace a regular electrolytic capacitor with a low
ESR version in things like the vertical and horizontal sections of a
CRT monitor or TV?

Are there any cases where low ESR electrolytics should never be
substituted?

I have found instances of a simple switchmode power supply that used standard
electros on the input. Replacing with low ESR type actually increased the
switching frequency spikes on the output.

"larry moe 'n curly" bravely wrote to "All" (25 Sep 05 20:51:44)
--- on the heady topic of "OK to always substitute low ESR capacitors?"

lm'c From: "larry moe 'n curly"
lm'c Xref: core-easynews sci.electronics.repair:343135

lm'c Is it always OK to replace a regular electrolytic capacitor with a low
lm'c ESR version in things like the vertical and horizontal sections of a
lm'c CRT monitor or TV?

Yes, without many qualifications.


lm'c Are there any cases where low ESR electrolytics should never be
lm'c substituted?

This is now about replacing a low ESR type with a regular cap, right?
There might be but usually not. However, if it is done then a small
value low esr cap should be paralled across it to lower the impedance.
This technique is typically seen in audio amplifier supplies.

A*s*i*m*o*v

.... :) What does that wire do? =8Q (oh!)