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Forum index » Electronix » Repair
OT : Design versus Function
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mc
electronics forum Guru


Joined: 29 Dec 2005
Posts: 475

PostPosted: Wed Jul 19, 2006 4:22 pm    Post subject: Re: OT : Design versus Function Reply with quote

"n cook" <diverse8@gazeta.pl> wrote in message
news:e9fd4v$b2u$1@inews.gazeta.pl...
Quote:
hrhofmann@att.net> wrote in message
news:1153103937.276018.325140@75g2000cwc.googlegroups.com...

Over the years I've heard this from ordinary people.
In the UK the domestic mains flex colours are
Brown - Live
Blue - Neutral
Green/Yellow - Earth
One person thought that as the yellow/green one looks like a snake
colouring, then that must be the dangerous one so the live.

Yes, they've put the least vivid colour on the live one, and vice versa!

Over here black is live and white is neutral. The opposite of automotive
and most other DC electronics, where black is ground and red is live.
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n cook
electronics forum Guru Wannabe


Joined: 11 Jan 2006
Posts: 153

PostPosted: Mon Jul 17, 2006 7:11 am    Post subject: Re: OT : Design versus Function Reply with quote

<hrhofmann@att.net> wrote in message
news:1153103937.276018.325140@75g2000cwc.googlegroups.com...
Quote:

Jim Land (NO SPAM) wrote:
My pet peeve is all the millions of consumer audio & video products in
black boxes with black pushbuttons. Especially with the labels in tiny
font. Makes for very poor function.

Anyone else have any examples?

For those of us (10%) males who are red-green color-blind, the
indicator LED's that change from red to amber to green are useless.
The three colors all look the same.
There are too many products that do this to even start to list them.
They drive me crazy as I cannot tell what the indicator light means,
And, I am only partially red-green color blind. I love the new LED
traffic lights, the bluish green of the green lights is easy for me to
distinguish compared to the sickly green that some older lights used to
put out.

H. R. (Bob) Hofmann


How do you tell 2.2K from 2.2M resistors etc.?
Do you have bits of red and green coloured gels/filters
so 1/2 resistor band(s) goes lighter and one goes darker when viewed through
them

Over the years I've heard this from ordinary people.
In the UK the domestic mains flex colours are
Brown - Live
Blue - Neutral
Green/Yellow - Earth
One person thought that as the yellow/green one looks like a snake
colouring, then that must be the dangerous one so the live.

Then someone else, the most distinctive one even in bad light is the yellow
/ green one so that must be the live one, the brown one is earth coloured so
that must be the earth , leaving the blue which must be the remaining one of
neutral.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
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hrhofmann@att.net
electronics forum addict


Joined: 15 Jul 2005
Posts: 84

PostPosted: Mon Jul 17, 2006 2:38 am    Post subject: Re: OT : Design versus Function Reply with quote

Jim Land (NO SPAM) wrote:
Quote:
My pet peeve is all the millions of consumer audio & video products in
black boxes with black pushbuttons. Especially with the labels in tiny
font. Makes for very poor function.

Anyone else have any examples?

For those of us (10%) males who are red-green color-blind, the
indicator LED's that change from red to amber to green are useless.
The three colors all look the same.
There are too many products that do this to even start to list them.
They drive me crazy as I cannot tell what the indicator light means,
And, I am only partially red-green color blind. I love the new LED
traffic lights, the bluish green of the green lights is easy for me to
distinguish compared to the sickly green that some older lights used to
put out.

H. R. (Bob) Hofmann
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Jim Land
electronics forum beginner


Joined: 06 Jun 2006
Posts: 46

PostPosted: Sat Jul 15, 2006 8:36 pm    Post subject: Re: OT : Design versus Function Reply with quote

My pet peeve is all the millions of consumer audio & video products in
black boxes with black pushbuttons. Especially with the labels in tiny
font. Makes for very poor function.

Anyone else have any examples?
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n cook
electronics forum Guru Wannabe


Joined: 11 Jan 2006
Posts: 153

PostPosted: Sat Jul 15, 2006 7:57 am    Post subject: OT : Design versus Function Reply with quote

Anyone else have any examples.
Got a basic set-top TV digital box, should have a simple LED on the front
showing whether the unit is on or standby.
No, it is buried inside to illuminate via plastic the whole control button
section as a red or green glow. But in anything other than very subdued room
lighting you cannot see whether its on or off and even then you have to view
directly , not obliquely.
There was a series of Panasonic VCRs that instead of using the usual (up to
then) large digit cold cathode glowing displays they had LCD displays no
bigger than a wrist watch that you had to go within a foot of the display to
read.

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/
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