Groups > sci.electronics.design > #518178

Re: Abusing brick on the rope

From	<698839253X6D445TD@nospam.org>
Newsgroups	sci.electronics.design
Subject	Re: Abusing brick on the rope
Date	2018-10-03 07:30 +0000
Organization	Aioe.org NNTP Server
Message-ID	<pp1r75$1nub$1@gioia.aioe.org> (permalink)
References	<9d99359d-4f4d-444e-b3e9-6e4dca24a80f@googlegroups.com>

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George Herold wrote
>Hi all, I just got done fixing a piece of apparatus that was returned to us.  The thing was trashed, (all sorts of blown
>components) and I've been trying to figure out what happened.  Perhaps what I found weirdest is a power monitor 
>LED.  This sits across the +/-15 V rails, with a 12V zener and 5 k ohm 
>resistor in series.  (the zener stops it from turning on if one of the rails 
>fails.)  It just barley put out any light.... trashed.  
>It can take 30 mA forward so >~150 V for too much current.  
>And in reverse it doesn't break down till -80 V. 
>(I just tested it... it shows a photo response too, 
>but don't distract me.) 
>
>So I was in contact with the school that was using this.. checking return 
>address, and I asked if they wanted a new brick on the rope.  (Because they 
>hadn't returned theirs with the unit.)  It was just then that I learned that 
>the brick on the rope had failed!!  And they had purchased a new one from the 
>vendor (astrodyne)  
>
>So my current theory is that the brick on the rope failed (somehow) 
>and blew 120 Vac through my circuit.. with devastating results.  
>Any idea how I can test this theory.. how do I blow up a brick on a 
>rope?  (Astrodyne Mod num. SPU45-210) +15 V @ +2A / -15V @ -1A.  
>
>Thanks
>George H. 
>(maybe I should contact astrodyne.)       

It being a school, it would not surprise me (has your 'thing' any output? if
'they' (accidently??) put some ...mains into your output and that way in reverse killed your
unit and that power supply (a more common word) too.
He 'whodiddit' will remain anonymous and life goes on.
In that worst case they will do it again with the new replacement.
From a legal POV you can use an expert witness to show your thing could not be the cause.
Shit situation.

 Not enough data

Thread

Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-02 12:55 -0700
  Re: Abusing brick on the rope tabbypurr@gmail.com - 2018-10-02 13:12 -0700
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-02 13:35 -0700
      Re: Abusing brick on the rope tabbypurr@gmail.com - 2018-10-02 16:13 -0700
        Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-02 17:04 -0700
          Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-02 17:19 -0700
            Re: Abusing brick on the rope tabbypurr@gmail.com - 2018-10-02 17:47 -0700
            Re: Abusing brick on the rope Lasse Langwadt Christensen <langwadt@fonz.dk> - 2018-10-02 18:16 -0700
            Re: Abusing brick on the rope Jon Elson <elson@pico-systems.com> - 2018-10-03 14:09 -0500
              Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:37 -0700
              Re: Abusing brick on the rope <698839253X6D445TD@nospam.org> - 2018-10-04 06:19 +0000
      Re: Abusing brick on the rope DLUNU <DecadentLinuxUserNumeroUno@DLU.org> - 2018-10-03 01:47 +0000
        Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 06:11 -0700
          Re: Abusing brick on the rope Steve Wilson <no@spam.com> - 2018-10-03 13:17 +0000
            Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 06:36 -0700
              Re: Abusing brick on the rope gnuarm.deletethisbit@gmail.com - 2018-10-03 10:02 -0700
              Re: Abusing brick on the rope krw@notreal.com - 2018-10-03 22:14 -0400
            Re: Abusing brick on the rope DLUNU <DecadentLinuxUserNumeroUno@DLU.org> - 2018-10-03 16:27 +0000
              Re: Abusing brick on the rope gnuarm.deletethisbit@gmail.com - 2018-10-03 10:04 -0700
          Re: Abusing brick on the rope DLUNU <DecadentLinuxUserNumeroUno@DLU.org> - 2018-10-03 16:25 +0000
  Re: Abusing brick on the rope piglet <erichpwagner@hotmail.com> - 2018-10-02 21:25 +0100
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-02 13:48 -0700
      Re: Abusing brick on the rope Jon Elson <elson@pico-systems.com> - 2018-10-03 14:15 -0500
        Re: Abusing brick on the rope Phil Allison <pallison49@gmail.com> - 2018-10-03 15:18 -0700
          Re: Abusing brick on the rope tabbypurr@gmail.com - 2018-10-03 17:26 -0700
            Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:52 -0700
          Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:45 -0700
          Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-11 12:22 -0700
  Re: Abusing brick on the rope John Robertson <spam@flippers.com> - 2018-10-02 15:32 -0700
  Re: Abusing brick on the rope Lasse Langwadt Christensen <langwadt@fonz.dk> - 2018-10-02 15:56 -0700
  Re: Abusing brick on the rope Jasen Betts <jasen@xnet.co.nz> - 2018-10-03 00:58 +0000
  Re: Abusing brick on the rope Phil Allison <pallison49@gmail.com> - 2018-10-02 23:23 -0700
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 06:16 -0700
  Re: Abusing brick on the rope Phil Allison <pallison49@gmail.com> - 2018-10-02 23:25 -0700
  Re: Abusing brick on the rope <698839253X6D445TD@nospam.org> - 2018-10-03 07:30 +0000
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 06:19 -0700
      Re: Abusing brick on the rope <698839253X6D445TD@nospam.org> - 2018-10-03 14:01 +0000
        Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 07:12 -0700
          Re: Abusing brick on the rope <698839253X6D445TD@nospam.org> - 2018-10-04 06:20 +0000
    Re: Abusing brick on the rope Jon Elson <elson@pico-systems.com> - 2018-10-03 14:20 -0500
      Re: Abusing brick on the rope Lasse Langwadt Christensen <langwadt@fonz.dk> - 2018-10-03 12:27 -0700
        Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:58 -0700
          Re: Abusing brick on the rope <698839253X6D445TD@nospam.org> - 2018-10-04 06:20 +0000
      Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:36 -0700
  Re: Abusing brick on the rope Mikko OH2HVJ <mikko.syrjalahti@nospam.fi> - 2018-10-03 12:39 +0300
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 06:22 -0700
  Re: Abusing brick on the rope Ingvald44 <noone@nowhere.com> - 2018-10-03 08:02 -0400
  Re: Abusing brick on the rope Jon Elson <elson@pico-systems.com> - 2018-10-03 14:07 -0500
    Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-03 17:24 -0700
      Re: Abusing brick on the rope Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2018-10-04 12:45 -0400
        Re: Abusing brick on the rope George Herold <gherold@teachspin.com> - 2018-10-04 10:01 -0700

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