From: David Van Horn <david.vanhorn@backcountryaccess.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Thu, 27 Feb 2020 12:07:27 -0800
Subject: RE: [EE]:: Body diode conduction insanity
Thread-Topic: [EE]:: Body diode conduction insanity
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Yes, that app note was horrible.=20

I've seen similar with Astron power supplies that are basically straight ou=
t of the NS linear data book.  Not bad, but they have issues with RF where =
the crowbar can get triggered.  They are very popular with hams.

A friend of mine used an Astron in parallel with a deep cycle battery on fi=
eld day, and was very surprised when the wires between the battery and the =
power supply ignited.
He had tweaked the output to 13.8 or 14V, I forget exactly, to charge the b=
attery, but the crowbar was still at 15.  The Astron has an input fuse, but=
 nothing on the output side.

When the RF from the transmitter pushed the crowbar into trip, everything g=
ot exciting.


--
David VanHorn
Lead Hardware Engineer

Backcountry Access, Inc.
2820 Wilderness Pl, Unit H
Boulder, CO =A080301 USA
phone:=A0303-417-1345 =A0x110
email:=A0david.vanhorn@backcountryaccess.com=A0


--=20
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