An 80 port USB Board

[Don McKenzie]

An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

I can't see me throwing it into my notebook case for traveling

Cheers Don...



--
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[David L. Jones]

Don McKenzie wrote:

An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and figured, hey
this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's screw
terminals and a big arse bench supply though, but I can see the benefits of
using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com

 

[Royston Vasey]

"David L. Jones" <altzone@gmail.com> wrote in message
news:s_H9n.25887$fu3.13588@newsfe12.iad...

Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and figured, hey
this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's screw
terminals and a big arse bench supply though, but I can see the benefits
of using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com

I'm sold on it

"USB terminal 80 is something that when viewed from the side of the port in
line, you feel powerful and somewhat like a soldier in the army.........Why
do not you call out excited just thinking about what else?"

 

[David L. Jones]

Royston Vasey wrote:

"David L. Jones" <altzone@gmail.com> wrote in message
news:s_H9n.25887$fu3.13588@newsfe12.iad...
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if
there is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and
figured, hey this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's
screw terminals and a big arse bench supply though, but I can see
the benefits of using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com



I'm sold on it

"USB terminal 80 is something that when viewed from the side of the
port in line, you feel powerful and somewhat like a soldier in the
army.........Why do not you call out excited just thinking about what
else?"

Chinglish at it's finest!

Dave.

 

[F Murtz]

kreed wrote:

On Feb 2, 7:48 am, "David L. Jones"<altz...@gmail.com> wrote:
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and figured, hey
this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's screw
terminals and a big arse bench supply though, but I can see the benefits of
using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog& Podcast:http://www.eevblog.com

Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB sockets
on them as well as the 240v socket. Phone charger cables are available
that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget, just
as the car cigarette lighter socket has become a standard 12v power
socket for anything and everything.

The 500ma limit of a normal USB port might be a problem in some
applications, but this is more than enough for most gadgets out there,
and definitely enough for charging batteries used in most portable
devices.

Eighty times 500ma (keep you warm in winter)

 

[kreed]

On Feb 2, 7:48 am, "David L. Jones" <altz...@gmail.com> wrote:

Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and figured, hey
this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's screw
terminals and a big arse bench supply though, but I can see the benefits of
using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:http://www.eevblog.com

Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB sockets
on them as well as the 240v socket. Phone charger cables are available
that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget, just
as the car cigarette lighter socket has become a standard 12v power
socket for anything and everything.

The 500ma limit of a normal USB port might be a problem in some
applications, but this is more than enough for most gadgets out there,
and definitely enough for charging batteries used in most portable
devices.

 

[Paul Carpenter]

In article <59c60baf-ba6c-443b-9cac-
9ae70ba720cc@u18g2000prn.googlegroups.com>, kenreed1999@gmail.com says...

On Feb 2, 7:48 am, "David L. Jones" <altz...@gmail.com> wrote:
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?
.....
Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB sockets
on them as well as the 240v socket. Phone charger cables are available
that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget, just
as the car cigarette lighter socket has become a standard 12v power
socket for anything and everything.

Already is the case, so nobody has enough USB sockets.

Wait for the PC/laptop that has 80 sockets for all the devices to be
plugged in.

The 500ma limit of a normal USB port might be a problem in some
applications, but this is more than enough for most gadgets out there,
and definitely enough for charging batteries used in most portable
devices.

When no enumeration has taken place about 90mA, you can only get 500mA
AFTER a data exchange to do enumeration.

--
Paul Carpenter | paul@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/> PC Services
<http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
<http://www.gnuh8.org.uk/> GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/> For those web sites you hate

 

[Gemini]

On 2/1/2010 7:21 PM, David L. Jones wrote:

Royston Vasey wrote:
"David L. Jones"<altzone@gmail.com> wrote in message
news:s_H9n.25887$fu3.13588@newsfe12.iad...
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if
there is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?

Certainly.
The company probably made it for an in-house application and
figured, hey this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's
screw terminals and a big arse bench supply though, but I can see
the benefits of using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog& Podcast:
http://www.eevblog.com



I'm sold on it

"USB terminal 80 is something that when viewed from the side of the
port in line, you feel powerful and somewhat like a soldier in the
army.........Why do not you call out excited just thinking about what
else?"

Chinglish at it's finest!

Dave.

Well, that line was the result of Google translate (note the link).

z

 

[David L. Jones]

Paul Carpenter wrote:

In article <59c60baf-ba6c-443b-9cac-
9ae70ba720cc@u18g2000prn.googlegroups.com>, kenreed1999@gmail.com
says...
On Feb 2, 7:48 am, "David L. Jones" <altz...@gmail.com> wrote:
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if
there is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?
....
Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB
sockets on them as well as the 240v socket. Phone charger cables are
available that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget,
just as the car cigarette lighter socket has become a standard 12v
power socket for anything and everything.

Already is the case, so nobody has enough USB sockets.

Wait for the PC/laptop that has 80 sockets for all the devices to be
plugged in.

The 500ma limit of a normal USB port might be a problem in some
applications, but this is more than enough for most gadgets out
there, and definitely enough for charging batteries used in most
portable devices.

When no enumeration has taken place about 90mA, you can only get 500mA
AFTER a data exchange to do enumeration.

That's the theory, but in practice most machines don't bother and just give
500mA. Every machine I've tried has.
And powered USB hubs are supposed to give 500mA without question.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com

 

[keithr]

David L. Jones wrote:

Royston Vasey wrote:
"David L. Jones" <altzone@gmail.com> wrote in message
news:s_H9n.25887$fu3.13588@newsfe12.iad...
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if
there is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?
Certainly.
The company probably made it for an in-house application and
figured, hey this might be useful to someone else.
I've had to power almost that many 5V devices before. Normally it's
screw terminals and a big arse bench supply though, but I can see
the benefits of using this thing and off the shelf USB cables.

Dave.

--
---------------------------------------------
Check out my Electronics Engineering Video Blog & Podcast:
http://www.eevblog.com


I'm sold on it

"USB terminal 80 is something that when viewed from the side of the
port in line, you feel powerful and somewhat like a soldier in the
army.........Why do not you call out excited just thinking about what
else?"

Chinglish at it's finest!

Dave.


Jinglish I think! There was a time when I spoke it like a native

(working for a Japanese company)

 

[kreed]

On Feb 3, 3:14 am, Paul Carpenter <p...@pcserviceselectronics.co.uk>
wrote:

In article <59c60baf-ba6c-443b-9cac-
9ae70ba72...@u18g2000prn.googlegroups.com>, kenreed1...@gmail.com says...



On Feb 2, 7:48 am, "David L. Jones" <altz...@gmail.com> wrote:
Don McKenzie wrote:
An 80 port USB Board:
http://translate.google.com/translate?hl=en&ie=UTF8&langpair=ja|en&sl=ja&tl=en&u=http://www.thanko.jp/product/usb_80port/

Unfortunately it looks like it is just for power, so I wonder if there
is a call for such a device.

Was interesting enough to point out, but who could really use it?
A device manufacturer who wanted to charge units before shipping?
....
Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v  plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB sockets
on them as well as the 240v socket. Phone charger cables are available
that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget, just
as the car cigarette lighter socket has become a standard 12v power
socket for anything and everything.

Already is the case, so nobody has enough USB sockets.

Wait for the PC/laptop that has 80 sockets for all the devices to be
plugged in.

The 500ma limit of a normal USB port might be a problem in some
applications, but this is more than enough for most gadgets out there,
and definitely enough for charging batteries used in most portable
devices.

When no enumeration has taken place about 90mA, you can only get 500mA
AFTER a data exchange to do enumeration.

I have read about that too, but in practice, I have had no problems
with powering "dumb" devices (ie: ones that only connect to the power
pins and dont utilise the data pins) from USB ports drawing currents
substantially in excess of 90ma. (tested only up to about 400ma)

I have only tried this on various ASUS motherboards though, not
laptops.


In reality, one of the real limiting factors can be that the +5v wire
in the various USB cables, as well as the wire between the USB sockets
in the front of cases and the cables to the motherboard, is not of a
sufficient thickness to avoid voltage drops when the device at the end
is drawing currents at the upper end of the limit.

We actually had a USB lead in the workshop with the +5v and ground
wires cut and brought out of the cable at both ends, and a thicker
wire (0.5mm sq) running on the outside of the cable to the other end
to avoid this problem when testing some devices.

Some Portable USB hard drives (laptop type) were notorious for this
problem, but I have noticed that modern USB cables seem to be a lot
better in this regard - possibly for the very reason that these
portable drives have become more popular in recent years, whereas I
cant remember seeing these around when USB was first introduced.

I doubt that these drives would have had much of a data transfer rate
in the early days until USB 2 speeds came along.

--
Paul Carpenter          | p...@pcserviceselectronics.co.uk
http://www.pcserviceselectronics.co.uk/>    PC Services
http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
http://www.gnuh8.org.uk/>  GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
http://www.badweb.org.uk/> For those web sites you hate

 

[Philipp Klaus Krause]

kreed schrieb:

Add to that that the USB port is slowly becoming (to the consumer) a
de-facto +5v power socket, with USB socketed +5v plugpacks, Car
cigarette lighter inverters sometimes have a couple of +5v USB sockets
on them as well as the 240v socket. Phone charger cables are available
that plug to USB to charge.

In time, the USB socket will likely become a universal +5v supply
source (without data lines) for just about every consumer gadget, just
as the car cigarette lighter socket has become a standard 12v power
socket for anything and everything.

It's not just convinience, it's the law. Many countries have passed laws
that mandate use of Micro-USB sockets e.g. for phone chargers.

Philipp