OK to always substitute low ESR capacitors?
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? |
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. |
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. |
"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!) |
On 2005-09-28 00:51:21 -0700, Bob Parker said:
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. Hi Bob, Well, I've use two different tacts to try and defeat spam, one that works quite well is my return email address that I use on newsgroups (and it IS valid! ;-) - think about what the spammers trim automatically from posted emails and you will get it. The second is to use my email address (parts@...) on the web site, BUT with using escape codes inthe HTML coded part so the spam sniffers don't see it. Look for 'munging your email address' on google for this trick. With these two in action I only get about ten spams a day to my web site email address(parts@...) and none (0) to the newsgroup return address. My regular one (JRR@...) I get a couple of hundred a day (sigh) but that is because it is in WAY too many address books around the world - but Eudora catches 95% of spam that comes in that way, leaving me simply to have to review the junk (ten or so a day) that gets to the inbox. If I opened a new address I'm sure it would not get much at all using these procedures. Oh, and I use a MAC running OS X so viruses, spyware, and worms are of no concern at all. John :-#)# -- (Please post followups or tech enquires to the newsgroup) John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
John Robertson wrote:
Hi Bob, Well, I've use two different tacts to try and defeat spam, one that works quite well is my return email address that I use on newsgroups (and it IS valid! ;-) - think about what the spammers trim automatically from posted emails and you will get it. The second is to use my email address (parts@...) on the web site, BUT with using escape codes inthe HTML coded part so the spam sniffers don't see it. Look for 'munging your email address' on google for this trick. With these two in action I only get about ten spams a day to my web site email address(parts@...) and none (0) to the newsgroup return address. My regular one (JRR@...) I get a couple of hundred a day (sigh) but that is because it is in WAY too many address books around the world - but Eudora catches 95% of spam that comes in that way, leaving me simply to have to review the junk (ten or so a day) that gets to the inbox. If I opened a new address I'm sure it would not get much at all using these procedures. Oh, and I use a MAC running OS X so viruses, spyware, and worms are of no concern at all. John : John, take a look at the website linked in the "orginization" line of the header above. The e-mail javascript pulls the rest of the e-mail address from the server and combines it with whatever page you are looking at to give the compleete e-mail address. Another advantage: I mirrored the site and gave it a different address by editing one file for the entire website. -- ? Michael A. Terrell Central Florida |
Hi John
I would like to see every single spammer placed onto some kind of space vehicle and blasted into the sun. They are the lowest scum of the earth. They've destroyed e-mail communication and made it impossible for anyone to make their real e-mail address public. Have you ever read "Thank The Spammers"? It's at http://www.linxnet.com/misc/spam/thank_spammers.html and other websites. Having expressed that view which I admit is nothing at all to do with low ESR caps or even electronics, I'd like to suggest that anyone reading this who has a website takes a look at a neat little online program which turns text into "character entities". When an e-mail address on a website's coded with that, the present generation of scum spammer harvesting bots can't see it. I hope it stays that way. Cheers Bob On Mon, 03 Oct 2005 17:28:53 GMT, John Robertson wrote: Hi Bob, Well, I've use two different tacts to try and defeat spam, one that works quite well is my return email address that I use on newsgroups (and it IS valid! ;-) - think about what the spammers trim automatically from posted emails and you will get it. The second is to use my email address (parts@...) on the web site, BUT with using escape codes inthe HTML coded part so the spam sniffers don't see it. Look for 'munging your email address' on google for this trick. With these two in action I only get about ten spams a day to my web site email address(parts@...) and none (0) to the newsgroup return address. My regular one (JRR@...) I get a couple of hundred a day (sigh) but that is because it is in WAY too many address books around the world - but Eudora catches 95% of spam that comes in that way, leaving me simply to have to review the junk (ten or so a day) that gets to the inbox. If I opened a new address I'm sure it would not get much at all using these procedures. Oh, and I use a MAC running OS X so viruses, spyware, and worms are of no concern at all. John :-#)# |
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