Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (September 2009, week 5)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:   Tue, 29 Sep 2009 07:58:57 -0500
Reply-To:   Tom Hargrave <thargrav@HIWAAY.NET>
Sender:   Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:   Tom Hargrave <thargrav@HIWAAY.NET>
Subject:   Re: ARRRGGGHHH Re: Tantalum capacitors to stop blinking temp LED
Comments:   To: Mike S <mikes@FLATSURFACE.COM>
In-Reply-To:   <20090929115724.75F401165C3@hamburg.alientech.net>
Content-Type:   text/plain; charset="us-ascii"

All depends on how the cap is used in the circuit. If it's part of a time delay, then yes the circuit should charge instantly and stay charged. But if it's used as part of a filter, you need the charge that's stored in the cap to keep a voltage present and removing it won't work.

Thanks, Tom Hargrave 256-656-1924

Our Web Sites: www.kegkits.com www.stir-plate.com www.andyshotsauce.com

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Mike S Sent: Tuesday, September 29, 2009 6:57 AM To: vanagon@GERRY.VANAGON.COM Subject: Re: ARRRGGGHHH Re: Tantalum capacitors to stop blinking temp LED

At 10:34 PM 9/28/2009, David Beierl wrote... >>Perhaps simply removing the old cap will allow proper operation, >>except for that power-on indication. > >Actually I believe that removing the cap will force blinking forever >-- the reason it fails to stop is that internal and external leakage >prevent the cap from ever charging enough to trigger the >shutoff.

I don't follow your logic.

If charging the cap turns off the blinking, then changing to a 0 pF cap with 0 leakage (i.e. removing the cap) should cause the circuit to charge instantly, and stay charged.


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.