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
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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.