Digest for sci.electronics.repair@googlegroups.com - 9 updates in 6 topics

Abandoned_Trolley <fred@fred-smith.uk>: Feb 26 06:11PM

On 29/01/2021 13:57, Tim R wrote:
 
 
> I will admit that I have also cut a cable too close to a connection and quickly regretted it.
 
Any wire cut to length is too short
 
AT
Allodoxaphobia <trepidation@example.net>: Feb 27 02:44PM

On Fri, 26 Feb 2021 18:11:16 +0000, Abandoned_Trolley wrote:
> On 29/01/2021 13:57, Tim R wrote:
 
>> I will admit that I have also cut a cable too close to a connection and quickly regretted it.
 
> Any wire cut to length is too short
 
If a wire has one end, then it has another.
"Peter W." <peterwieck33@gmail.com>: Feb 26 10:33AM -0800

Do you know any way
> i could tell if the kapton I have is anti-static?
 
Try rubbing some on a bit of wool in a dry (not humid) room and see if it sticks to anything.
 
Peter Wieck
Melrose Park, PA
Tinkerer <tinker5@anytime.net>: Feb 26 11:46PM -0500

On 2/26/21 1:33 PM, Peter W. wrote:
 
> Try rubbing some on a bit of wool in a dry (not humid) room and see if it sticks to anything.
 
> Peter Wieck
> Melrose Park, PA
 
Well, that certainly was a good test. The only wool I own this time of
year is a pair of Minus 33 wool thermals that I am wearing as I write.
I folded over the tape so the sticky side wouldn't interfere and rubbed
it on the pants. Took a few tries, but the tape finally did stick to
the wall. So that definitely answers the question and I won't be using
it. Thanks for this tip!
Chris Jones <lugnut808@spam.yahoo.com>: Feb 28 12:12AM +1100

On 27/02/2021 15:46, Tinkerer wrote:
> on the pants.  Took a few tries, but the tape finally did stick to the
> wall.  So that definitely answers the question and I won't be using it.
> Thanks for this tip!
 
As long as it does not actually get charged before or during the time
that it is near the sensitive circuitry, it should not cause damage.
Perhaps you could apply the tape before wiping it down with a damp cloth
to discharge it, then install the sensitive circuitry whilst there is no
charge present.
bruce bowser <bruce2bowser@gmail.com>: Feb 26 01:47PM -0800

On Monday, November 24, 2014 at 7:57:17 AM UTC-5, Jeff Layman wrote:
> in, and the only accessible wiring is to the mains connector. Is there
> any point in trying some sort of screening or RFI suppression on the
> mains wiring before I take it down?
 
U need an isolated ground receptacle. Used to combat noise interference with audio and video, it must be supplied by a metal raceway or cable system that is an equipment grounding conductor. Connect it past any panelboards and absolutely do not connect it to the panelboard grounding terminal bar, but to independent 3 x 6 ft. independent copper rods completely driven into the ground.
 
(As per code NEC 517.16 Use of Isolated Ground Receptacles
"The grounding terminal on the isolated ground receptacle must be connected by an insulated equipment grounding conductor with one or more yellow stripes which is permitted to pass through one or more panelboards without a connection to the panelboard grounding terminal bar as permitted in 408.40 ...)
bruce bowser <bruce2bowser@gmail.com>: Feb 26 01:11PM -0800

On Thursday, December 31, 2020 at 1:25:32 PM UTC-5, John Robertson wrote:
> Last Time Buy Date 06/21/2021
 
> You'd think a 50 year old design would just keep going and going...we
> use a lot of these in repairing arcade games!
 
With so many college wizkids minted each year with nothing to do, its a wonder even a one-year old design continues to be a standard (let alone a 50 year old one).
bruce bowser <bruce2bowser@gmail.com>: Feb 26 01:08PM -0800

On Saturday, June 20, 2020 at 12:53:44 PM UTC-4, Peter W. wrote:
> No lock is any better than the frame it is in. Nor do most thieves come at night.
 
> Out on the Main Line (look it up!) there was a group that worked out of a large box-truck. They would pull up into a driveway (no sidewalks out there), put a large sign in the yard: House And Yard Clean-Outs, Fast Personal Service
 
> Then, do just that.
 
I like how in the early 60's a US satellite focused all the way in on a single golf ball. I wonder how much of that photography (or other ground detail replications) prosecutors can get their hands on.
Chuck <chuck23@dejanews.net>: Feb 26 11:38AM -0600

On Thu, 25 Feb 2021 16:23:35 -0800 (PST), bruce bowser
>> Melrose Park, PA
>> > What are some foreign equivalents to the jeep or Humvee (HMMWV)?
 
>In WWII, the japanese used something called the type 95 by Tokyu Kurogane Industries and I guess you could remember the Volkswagen Kübelwagen (type 82) from Hogan's Heroes.
 
The Russian Lada Niva is considered one of the most rugged SUVs.
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