From: Bob Blick <bobblick@outlook.com>
To: Microcontroller discussion list - Public. <PICList@MIT.EDU>
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Date: Sun, 19 Apr 2020 11:10:02 -0700
Subject: Re: [EE] electrolytic capacitors
Thread-Topic: [EE] electrolytic capacitors
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Hi Allen,
Caps that are unused for for a long time do degrade, but it takes years. An=
d I personally believe that name-brand caps made in the last couple of deca=
des are better made than ones made in the previous century.

The problem for electrolytic caps when leaving equipment on is heat and rip=
ple current. I think the Soundcraft advisory is correct.

Best regards, Bob

________________________________________
From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of Allen =
Mulvey=20
Sent: Sunday, April 19, 2020 9:35 AM
To: 'PIC List'; 'PIC List'
Subject: [EE] electrolytic capacitors

Today I noticed advice in a Soundcraft forum to turn off the mixer when not
in use to prolong the life of the electrolytic capacitors. I know these hav=
e
changed an awful lot in the last 60 years but, once upon a time,
electrolytic capacitors failed if they were left unpowered for long periods
of time. The dielectrics needed to be "formed" by a prolonged charge. What
is the case today? Was that advice accurate? Was my old information wrong?



Thanks,

Allen


--=20
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