[GreenKeys] suggestion for ST6 Modification.

[Herb Graeber]

If I remember correctly, both the motor and the loop
current are cutoff at the same time.  I remember the
machine running open for the few seconds while the
Model 28 ran down.  But, I've slept since then.
73...Herb K5HG


  ----- Original Message ----- 
  From: Alf Fisher 
  To: k0bx at arrl.net ; W2HX ; greenkeys at mailman.qth.net 
  Sent: Monday, March 03, 2014 4:04 PM
  Subject: Re: [GreenKeys] suggestion for ST6 Modification.


  Hi Joe & Eugene,
  I reckon it would be desirable after the auto-start relay times out, to have a few seconds delay before opening the loop otherwise the machine will run open while the motor slows down.

  The ST-6 does cut off the loop current and motor already but I don't know whether there is any delay on the loop current being cut.

  73
  Alf
  G3WSD

    ----- Original Message ----- 
    From: k0bx at arrl.net 
    To: W2HX ; greenkeys at mailman.qth.net 
    Sent: Monday, March 03, 2014 8:34 PM
    Subject: Re: [GreenKeys] suggestion for ST6 Modification.


    I believe the HAL ST-6 does this already.  When the auto-start relay times out, it also disconnects the loop supply.

    Joe K0BX




    #1 Honor Roll Mixed
    Honor Roll RTTY
    5BWAS



    Stop the insanity!
    Please do not add me to any distribution lists (Joke, Stories or Junk) without my permission.



----------------------------------------------------------------------------
    From: W2HX <w2hx at w2hx.com>
    To: "greenkeys at mailman.qth.net" <greenkeys at mailman.qth.net> 
    Sent: Monday, March 3, 2014 5:39 PM
    Subject: [GreenKeys] suggestion for ST6 Modification.



    Hello all,

    I’ve been bitten with the autostart bug. As I refamiliarize myself with the ST6 (having not played with it much in a few years).  I realized that even after it turns the motor outlet off, the loop current remains flowing. I thought it would be a good mod to have the loop open up when the motor turns off to safe heat, magnets, etc.  I thought one solution might be to change the motor relay to one that has another pole. Then run the loop through that pole. So when the relay opens, so does the loop.  

    But I wonder if there would be a more elegant solution that would be purely electronic and not have to change the relay.  Or perhaps there really is not benefit in turning off the loop. 

    73 Eugene W2HX


    ______________________________________________________________
    GreenKeys mailing list
    Home: http://mailman.qth.net/mailman/listinfo/greenkeys
    Help: http://mailman.qth.net/mmfaq.htm
    Post: mailto:GreenKeys at mailman.qth.net

    2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
    1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
    Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

    This list hosted by: http://www.qsl.net
    Please help support this email list: http://www.qsl.net/donate.html





------------------------------------------------------------------------------


  ______________________________________________________________
  GreenKeys mailing list
  Home: http://mailman.qth.net/mailman/listinfo/greenkeys
  Help: http://mailman.qth.net/mmfaq.htm
  Post: mailto:GreenKeys at mailman.qth.net

  2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
  1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
  Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html

  This list hosted by: http://www.qsl.net
  Please help support this email list: http://www.qsl.net/donate.html


------------------------------------------------------------------------------


  No virus found in this message.
  Checked by AVG - www.avg.com
  Version: 2012.0.2247 / Virus Database: 3705/6642 - Release Date: 03/02/14
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20140303/55b7c7da/attachment.html>