From: Allen Mulvey <allen@amulvey.com>
To: 'Microcontroller discussion list - Public.' <piclist@mit.edu>
Sender: "piclist-bounces@mit.edu" <piclist-bounces@mit.edu>
Date: Sat, 18 Jan 2020 19:17:44 -0800
Subject: [EE] Magnetic lock
Thread-Topic: [EE] Magnetic lock
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Actually my system uses a separate magnetic switch embedded
in the edge of the door to tell if it is ajar.

Also, my apologies to list members adversely affected my
failure to remove the DKIM warnings prepended to the subject
line. The server that hosts this list requests a DKIM check
yet all messages from the list fail that test. Rather than
block such messages I pass them through with the warning "[
CAUTION: Failed DKIM Test]" and a message is returned to the
sender advising them of the failure. If anyone knows of a
better way to handle this please advise. I had the same
problem with my own lists and have not found a favorable
solution.

Thanks,
Allen

-----Original Message-----
From: piclist-bounces@mit.edu
[mailto:piclist-bounces@mit.edu] On Behalf Of mike brown
Sent: Saturday, January 18, 2020 8:40 PM
To: Microcontroller discussion list - Public.
Subject: Re: [CAUTION: Failed DKIM Test][EE] Magnetic lock

In my experience, the electromagnet appears to draw less
current when
latched to the metal plate.  This is an unscientific
observation based upon
the temperature of the magnet increasing when not latched to
the steel
plate.  Amazing that they can generate such a strong holding
force using
three watts of power as long as the two parts perfectly mate
to each other.

On Sat, Jan 18, 2020, 19:07 Bob Blick <bobblick@outlook.com>
wrote:

> Admin message to Allen, since his email address seems to
reject direct
> email.
>
> Hi Allen,
> Please, when you reply to a piclist post, insure that the
subject line
> topic tag is not preceded by your own email system's
bracketing system,
> because it does not conform to the piclist topic tag
definitions and
> interferes with our archiving system, and also with users
that rely on the
> topic tag to sort their piclist emails.
> Thanks.
> Bob
>
> --
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