[Elecraft] Issue 12 re Astron Power Supply

Edward McCann ag6cx1 at gmail.com
Sun Apr 15 21:58:34 EDT 2018


Yes.

And I read he made no distinction between “case” and “chassis”, like the other respondents.

Or did you catch something I missed?

Much obliged for your prompt response.

73,

AG6CX

Sent from my iPhone

> On Apr 15, 2018, at 6:27 PM, <john at kk9a.com> <john at kk9a.com> wrote:
> 
> Did you read W4TV's post on this subject?
> http://mailman.qth.net/pipermail/elecraft/2018-April/255072.html
> 
> Edward McCann ag6cx1 wrote: 
> 
> 
> 
> "But there is also a small black wire that bonds the V- terminal to the
> case. Should the paint around that screw also be removed???Does that
> negative rail need to be bonded to the chassis??"
> 
> I'm trying to figure out the difference between the "case" and the
> "chassis".
> 
> Can you help?
> 
> Jim Brown's answer is also ambiguous to me.
> 
> He says, yes scrape and attach the V- rail to deal with your black wire if
> you want to bond V-, but then says don't because the negative rail should
> not be bonded to the chassis.
> 
> I quote below:
> 
> 
>> "But there is also a small black wire that bonds the V- terminal to the
> case. Should the paint around that screw also be removed?
> 
> Yes, IF you want to bond V-.
> 
>> ?Does that negative rail need to be bonded to the chassis?
> 
> No, and in general, it should NOT be bonded."
> 
> I also offer I might be out of touch with the subtleties of the concept, and
> may be interpreting the comments incorrectly. 
> 
> In any event, some clarification would be appreciated 
> 
> What did you finally do? And did it work?
> 
> Thanks,
> 
> Ed McCann
> AG6CX
> 
> Sent from my iPhone
> 
>> On Apr 10, 2018, at 11:34 PM, elecraft-request at mailman.qth.net wrote:
>> 
> 


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