[GreenKeys] 18 volt Internal Loop Supply

[hwhall at compuserve.com]

He wrote:  "On my current DSP TU project, I'm thinking of just using lack of loop
current as a motor shutdown."

WayneWB4OGM

-----Original Message-----
From: Jim Haynes <jhhaynes at earthlink.net>
To: hwhall at compuserve.com
Cc: greenkeys at mailman.qth.net <greenkeys at mailman.qth.net>
Sent: Sat, Jul 9, 2022 9:22 pm
Subject: Re: [GreenKeys] 18 volt Internal Loop Supply

On Sun, 10 Jul 2022, hwhall at compuserve.com wrote:

> I'm curious about how to keep the sel magnet from dropping off  & letting
> the machine "run open" for the brief time until the motor to stops turning.
> 
Maybe I don't understand the question, but if reverse polarity is used
for motor control the machine doesn't run open because the selector
magnet doesn't care about polarity.
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