Tingles from power supply

[Eeyore]

I do not have to prove anything, you stupid ****.

But you HAVE !

You've proven a total lack of understanding of wall warts.

Graham

 

[FunkyPunk FieldEffectTrollsistor]

My 'assumptions' were clearly 100% correct.

Franc came to the same conclusions too. Maybe you're not as expert as you
think.

Graham

You made yourself a liar when you stated that the amount of stored
charge has to be small.


It is, you idiot, so your claim that she was shocked by said cap is
total bullshit. I am quite sure her idea of quite a belt and ours
differs as well.

I have never received "quite a belt" from a ceramic cap, even at 20kV,
and I have dealt with them a lot. It takes a huge bank of them, which I
have also made, and no, you do not survive a zap from that bank.

 

[FunkyPunk FieldEffectTrollsistor]

That is the wrong word to use. A dongle is an adaptor that enables use of licenced software
that plugs into a PC port.
http://en.wikipedia.org/wiki/Dongle

What Sylvia had is commonly called a 'wall wart'.
http://en.wikipedia.org/wiki/Wall_wart

Now shut the **** up.

Graham

You're a goddamned idiot. Security dongles or what is also known as
"Authentication dongles" are as you describe. They are also all but out
of use and archaic.

The term is also used in the industry to describe outlet hung power
supplies, jackass.

SO you are full of shit, yet again, and you can shut the **** up,
asswipe.

Your argument was that they were incorporated into the WLAN, which
makes you 100% wrong.

 

[FunkyPunk FieldEffectTrollsistor]

USUALLY BLUE

You're an idiot. As in you are "Usually wrong".

Philips makes blue colored ceramic dip, which they use on their HV
caps, including Y caps.

Other makers use other colors, you retarded ****, and there is no
"usually", other than that you are usually wrong.

 

[FunkyPunk FieldEffectTrollsistor]

You're the retard here. Go learn some electronics !

Sylvia's experience is typical of wall warts.

Graham

You are full of shit. Maybe her experience can be associated with
poorly designed power supplies, but no power supply that is properly made
will do that.

Again, you are full of shit.

 

[FunkyPunk FieldEffectTrollsistor]

But you HAVE !

You've proven a total lack of understanding of wall warts.

Graham

I'll bet that I have more here in this very room than you have in your
entire set of possessions.

My designs are in production in two plants in China, dumbfuck.

Lloyds owns over half the company I worked for, which may no be
defunct.

You are clueless about power supplies as well as about me.

 

[Eeyore]

You made yourself a liar when you stated that the amount of stored
charge has to be small.

Bollocks. Do you want the damn clause ? I'm hardly inclined to bother looking it
up again for an idiot like you though.

Graham

 

[clanker]

Just as I am quite sure that you can quantify what "quite a belt" is.

In other words, it was NOT "quite a belt". it was a simple ceramic cap
discharge, which comes nowhere near "quite a belt" in REAL electronic
circles. In other words, twit, you are about as layman type as it gets.

So, you ARE an electronics retard, at best.

Sounds like you are a very unhappy fellow. The world is against you
and nobody understands you. It's not sand in the vagina is it ?

 

[Eeyore]

In other words, it was NOT "quite a belt".

Individuals respond differently. I'm quite tolerant of 'belts' myself.

Now shut up and go away.

Graham

 

[clanker]

I'll bet that I have more here in this very room than you have in your
entire set of possessions.

My designs are in production in two plants in China, dumbfuck.

Lloyds owns over half the company I worked for, which may no be
defunct.

You are clueless about power supplies as well as about me.

Did you get picked on at school ?

You sad little man/thing.

 

[Eeyore]

I do not have to prove anything, you stupid ****.

But you HAVE proven your total lack of knowledge of the typical 'wall wart'.

Graham

 

[Eeyore]

Your argument was that they were incorporated into the WLAN

Just how MORONIC are you ?

The WLAN hasn't got a dongle.

Graham

 

[Eeyore]

You're an idiot. As in you are "Usually wrong".

Philips makes blue colored ceramic dip, which they use on their HV
caps, including Y caps.

Other makers use other colors, you retarded ****, and there is no
"usually", other than that you are usually wrong.

It is VERY usual for Y caps to be blue. Not invariable but I'd say
around 90%+ are so.

Also a popular colour for polypropylene film caps.

Graham

 

[Eeyore]

You are full of shit. Maybe her experience can be associated with
poorly designed power supplies, but no power supply that is properly made
will do that.

It is EXACTLY typical of a flyback low power wall wart that meets IEC60065
and IEC60950.

If you could be bothered to go to powerint.com you could even get an app note
showing a typical design and the parts that caused her experience.

Graham

 

[Eeyore]

You are clueless about power supplies as well as about me.

So how come YOU don't understand where the leakage current comes from ( and
the stored charge ) ?

Graham

 

[Paul E. Schoen]

That is the wrong word to use. A dongle is an adaptor that enables use
of licenced software
that plugs into a PC port.
http://en.wikipedia.org/wiki/Dongle

What Sylvia had is commonly called a 'wall wart'.
http://en.wikipedia.org/wiki/Wall_wart

I agree. There are dongles for parallel port and USB for software
protection, and are still common on high end applications such as PCB
design packages. Here is a reference to a "dongle" as the connectors on a
computer power supply:
http://www.geeks.com/techtips/ttpdfs/Geeks.com_Tech-Tip 74 - Installing a Power Supply.pdf

And similar references:
http://www.howtofixcomputers.com/bb/ntopic52765.html
http://www.tomshardware.com/forum/131602-33-another-6800-power-supply-related-question

And this is the only actual Power Supply Dongle I found:
http://www.ipaqrepair.co.uk/ipaqpart390.html

"Always Wrong" proves it once again. And the little guy is crude and lewd
to make up for his "short-cummings".

Paul

 

[Rich Grise]

I've recently bought a D-Link DIR-300 wireless router. While
disconnecting its power supply from it, I got a tingling sensation when
I touched the plug (to be clear, I'm talking about the 5V DC plug, not
the mains plug).

An AVO meter shows about 90V AC to earth from either side of the 5V
plug. Short circuit current to earth is about 0.1mA.

Still, I thought these things were meant to be completely isolated. Has
there been a change of approach?

If the wart is 2-prong, turn it around in the socket. If it's 3-prong,
get an outlet tester.

Cheers!
Rich

 

[Eeyore]

I agree. There are dongles for parallel port and USB for software
protection, and are still common on high end applications such as PCB
design packages. Here is a reference to a "dongle" as the connectors on a
computer power supply:
http://www.geeks.com/techtips/ttpdfs/Geeks.com_Tech-Tip 74 - Installing a Power Supply.pdf

And similar references:
http://www.howtofixcomputers.com/bb/ntopic52765.html
http://www.tomshardware.com/forum/131602-33-another-6800-power-supply-related-question

And this is the only actual Power Supply Dongle I found:
http://www.ipaqrepair.co.uk/ipaqpart390.html

"Always Wrong" proves it once again. And the little guy is crude and lewd
to make up for his "short-cummings".

It's crazy what he comes up with.

On the subject of dongles, a client uses an old copy of a useless POS ( IMHO ) schematic and pcb software
from the UK called Vutrax. They even use it for mech drgs because you can ( it was designed as a sort of
all in one package ).

That requires a dongle and to their chagrin they found it didn't work with XP because of the way XP
controls access to the I/O. Their only resort was to keep a W98SE PC for the purpose.

Their use of Vutrax also means their CAD files are totally incompatible with virtually everyone else in
the world but hey-ho ! As a result some products have ended up being drafted in no less than THREE
packages. I've originated in Orcad for example. They complete the schematic design in Vutrax and the
sub-contractor who was doing layout used PADS !

Graham

 

[Eeyore]

If the wart is 2-prong, turn it around in the socket. If it's 3-prong,
get an outlet tester.

Sylvia's experience is 100% normal. I've even modelled it in the past which
is why I reckon the Y cap between the rectified pri and sec sides is 2n2.

I was myself at the time specifically interested in the value of the leakage
current and its waveform shape. It gives a great 'buzz' with lots of
harmonics in poorly grounded audio systems. The audio groups regularly get a
question why their laptop buzzes on the mains but not on battery power. About
once a month on average.

Cue EMC discussion ?

Graham

 

[John Devereux]

[...]

On the subject of dongles, a client uses an old copy of a useless POS ( IMHO ) schematic and pcb software
from the UK called Vutrax. They even use it for mech drgs because you can ( it was designed as a sort of
all in one package ).

That requires a dongle and to their chagrin they found it didn't work with XP because of the way XP
controls access to the I/O. Their only resort was to keep a W98SE PC for the purpose.

FYI they should be able to supply a non-dongled version.

Their use of Vutrax also means their CAD files are totally incompatible with virtually everyone else in
the world but hey-ho ! As a result some products have ended up being drafted in no less than THREE
packages. I've originated in Orcad for example. They complete the schematic design in Vutrax and the
sub-contractor who was doing layout used PADS !

You mean there is such a thing as a *compatible* PCB CAD format?