| Author |
Message |
Daniel Morrow
Guest
|
 Posted:
Mon Nov 14, 2005 8:27 am Post subject:
Power supplies in parallel for more current/same voltage? |
|
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
especially if you have to buy one for every single digital camera)
and found no suitable devices, and I don't want to convert a pc power
supply because there appears to be no way to avoid the intense heat
from seemingly any appropriate load. Also - I have never found a
universal wall mount power supply that would deliver enough current
for a digital camera. So, can I successfully do what I proposed
(parallel connected power supplies)? Any dangers? Plus - I would have
every individual power supply connected to a power strip with switch
as a group. Your comments are welcome. Good luck and later!
- - --
You can find my public key at https://keyserver1.pgp.com
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default
Guest
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| Posted:
Mon Nov 14, 2005 9:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
<videoman@ccountry.net> wrote:
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
especially if you have to buy one for every single digital camera)
and found no suitable devices, and I don't want to convert a pc power
supply because there appears to be no way to avoid the intense heat
from seemingly any appropriate load. Also - I have never found a
universal wall mount power supply that would deliver enough current
for a digital camera. So, can I successfully do what I proposed
(parallel connected power supplies)? Any dangers? Plus - I would have
every individual power supply connected to a power strip with switch
as a group. Your comments are welcome. Good luck and later!
|
You're asking for trouble with most power supplies. The instant of
powering up you'd have a potential for one supply feeding back into
another. A few diodes to isolate the supplies, some careful setup,
and maybe a few low value resistors to help the load sharing and it
might work - or at least prevent a catastrophic failure.
Check out All Electronics for surplus switchers -
http://www.allelectronics.com/ Home Page
http://www.allelectronics.com/cgi-bin/category.cgi?category=480&type=store
Page one power supplies
--
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w_tom
Guest
|
| Posted:
Mon Nov 14, 2005 9:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
Power supplies operating in parallel must be specially
designed for parallel operation. Otherwise one power supply
takes up all the load, switches into current foldback
limiting, and dumps all load onto the other supply. Second
supply then also goes into current foldback limiting. Since
you did not post numbers such as voltage, total current
requirement, percent regulation, maximum acceptable ripple,
etc, then no one can offer assistance.
Daniel Morrow wrote:
| Quote: | Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
especially if you have to buy one for every single digital camera)
and found no suitable devices, and I don't want to convert a pc power
supply because there appears to be no way to avoid the intense heat
from seemingly any appropriate load. Also - I have never found a
universal wall mount power supply that would deliver enough current
for a digital camera. So, can I successfully do what I proposed
(parallel connected power supplies)? Any dangers? Plus - I would have
every individual power supply connected to a power strip with switch
as a group. Your comments are welcome. Good luck and later! |
|
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CWatters
Guest
|
| Posted:
Mon Nov 14, 2005 9:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
"Daniel Morrow" <videoman@ccountry.net> wrote in message
news:11nfthfm9rer6b6@corp.supernews.com...
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras.
|
3A mains adaptors are available but does the camera really draw 3A+ ?
Which model do you have? |
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Gerard Bok
Guest
|
| Posted:
Mon Nov 14, 2005 5:35 pm Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
<videoman@ccountry.net> wrote:
| Quote: | Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
|
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
--
Kind regards,
Gerard Bok |
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Ken Taylor
Guest
|
| Posted:
Tue Nov 15, 2005 12:46 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378913b.11322538@News.Individual.NET...
| Quote: | On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
videoman@ccountry.net> wrote:
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
--
Kind regards,
Gerard Bok
|
What is so unusual about a 3A supply that it's output isn't specified
correctly?
Ken |
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Gerard Bok
Guest
|
| Posted:
Tue Nov 15, 2005 1:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
On Tue, 15 Nov 2005 07:46:39 +1300, "Ken Taylor"
<ken123@xtra.co.nz> wrote:
| Quote: | "Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378913b.11322538@News.Individual.NET...
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
videoman@ccountry.net> wrote:
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
What is so unusual about a 3A supply that it's output isn't specified
correctly?
|
Some supplies are stabilized. Some supplies provide the stated
output voltage (more or less) under the specified load.
And under no or low load a voltage that is much higher.
A digital camera connected to a PSU is unlikely to draw 3 Amps
all the time :-)
Also: some appliances take their input voltage to an internal
stabilizer. While others just supply it to their chips.
Without good knowledge of both the PSU and the camera, it is easy
to blow the camera.
--
Kind regards,
Gerard Bok |
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Ken Taylor
Guest
|
| Posted:
Tue Nov 15, 2005 1:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378e7d7.5796401@News.Individual.NET...
| Quote: | On Tue, 15 Nov 2005 07:46:39 +1300, "Ken Taylor"
ken123@xtra.co.nz> wrote:
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378913b.11322538@News.Individual.NET...
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
videoman@ccountry.net> wrote:
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
What is so unusual about a 3A supply that it's output isn't specified
correctly?
Some supplies are stabilized. Some supplies provide the stated
output voltage (more or less) under the specified load.
And under no or low load a voltage that is much higher.
A digital camera connected to a PSU is unlikely to draw 3 Amps
all the time :-)
Also: some appliances take their input voltage to an internal
stabilizer. While others just supply it to their chips.
Without good knowledge of both the PSU and the camera, it is easy
to blow the camera.
--
Kind regards,
Gerard Bok
|
Um, yeah, well I was kinda assuming that by 3A a supply isn't going to be
unregulated, but it's a fair comment. Pre-morning tea. :-)
Given that the OP is only after about 3A total, a single switch-mode (hence
regulated and stabilized) wall-wart/power-pack is a good option and
certainly better than trying to connect several up in parallel.
Cheers.
Ken |
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Guest
|
| Posted:
Tue Nov 15, 2005 1:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
Daniel, the conventional way of equalizing the amount of current from
multiple supplies is to put a resistor in series with each supply,
exactly the same method that is usually done to equalize the current
distribution among multiple transistors sources.
Since your application is a digital camera, it's a bit unclear whay you
cannot locate and purchase a wall wart type of supply for your
particular camera, since they are generally available on eBay and at
most camera stores or even Radio Schlock. That's certainly the easiest,
cheapest, and safest solution to your need.
Harry C. |
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Daniel Morrow
Guest
|
| Posted:
Tue Nov 15, 2005 1:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Bottom posted.
- --
You can find my public key at https://keyserver1.pgp.com
"Ken Taylor" <ken123@xtra.co.nz> wrote in message
news:gK6ef.1166$vH5.73060@news.xtra.co.nz...
| Quote: | "Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378e7d7.5796401@News.Individual.NET...
On Tue, 15 Nov 2005 07:46:39 +1300, "Ken Taylor"
ken123@xtra.co.nz> wrote:
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378913b.11322538@News.Individual.NET...
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
videoman@ccountry.net> wrote:
Hi everyone! I am trying to find a cheap way I can increase
the
current capacity of a power supply by installing fuses to each
output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words
combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have
researched
power supply providers and have found no usable/cheap enough
power
supplies (those dedicated power supplies are very expensive -
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
What is so unusual about a 3A supply that it's output isn't
specified
correctly?
Some supplies are stabilized. Some supplies provide the stated
output voltage (more or less) under the specified load.
And under no or low load a voltage that is much higher.
A digital camera connected to a PSU is unlikely to draw 3 Amps
all the time :-)
Also: some appliances take their input voltage to an internal
stabilizer. While others just supply it to their chips.
Without good knowledge of both the PSU and the camera, it is
easy
to blow the camera.
--
Kind regards,
Gerard Bok
Um, yeah, well I was kinda assuming that by 3A a supply isn't going
to be
unregulated, but it's a fair comment. Pre-morning tea. :-)
Given that the OP is only after about 3A total, a single
switch-mode (hence
regulated and stabilized) wall-wart/power-pack is a good option and
certainly better than trying to connect several up in parallel.
Cheers.
Ken
|
I am glad I asked before trying it. I have reviewed what you all have
said and realized that it normally isn't a problem (supplying power
to a digital camera) because people almost always just plain use
batteries, and after kicking things around in my head realized I
won't do otherwise (i.e. I will stick to batteries for these 2
cameras), my fathers' pocket camera can run off of a 1300 milliampere
universal so when I transfer the images from the camera to computer
the camera will stay on and not shut off due to low battery levels,
in turn that will keep windows 2000 professional service pack 4 from
crashing etc. (windows 2000 and xp suffer from not being true plug
and play compatible operating systems - if you shut a device off
without telling the operating system to unplug/eject a device through
the windows add/remove hardware wizard the operating system can
crash). The pocket camera can take 40 to 50 minutes to download 1 32
megabyte flash memory card's worth of pictures and at times there are
2 or 3 of those cards to download, so if the camera shuts off after 1
I usually have to reboot to do the next, etc.. I would like to just
be able to leave the camera on for an hour and get back to it then
instead of waiting for the variable amount of time to pass by
watching it the whole time and start the next card download. Do you
see what was my predicament before my purchase of a universal 1300 ma
power supply? That power supply has solved my problem. Now one of my
2 other cameras is labled at 3 volts at 2 amps for a wall-wart
wall-mount power supply, but because these 2 cameras use usb to
transfer their card's memory contents it is fast enough for me to
monitor the transfer, etc.. The pocket camera uses the serial port
for transferring so that is why it is so slow. If these newer
operating systems were as plug and playable as windows 98 first
edition for example then this wouldn't even be a problem at all.
Solution - I will use my current wall mount universal power supply
with the pocket camera and use batteries (rechargeable) for the 2
other cameras. It is really frustrating to not be able to find decent
high powered power supply though - I doubt anyone has ever really run
into this problem I guess though. I can't even get the add/remove
hardware wizard to list any devices when I want to unplug/eject a
device too, and that's on 2 separate computers. I don't know what's
going on with that but what I do instead is do my "unplug/eject a
device"ing from the device manager which seems to do the job 100%.
Good luck all and thanks for keeping me from frying digital cameras,
later!
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w_tom
Guest
|
| Posted:
Tue Nov 15, 2005 1:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
Removing a device without first turning the device off in
Windows will not crash NT based operating systems. It may
crash Windows 9x/ME systems that are not as resilient because
failed task in non- preemptive systems can lock the OS. If a
device is removed without first turning off, then data inside
the camera could be lost. This has been demonstrated with a
camera, USB port, and Windows 2000. But it never locks the NT
OS - as NT OS design even demands.
If disconnecting camera without first telling computer
causes computer to crash, well, it was recently solved on that
Windows 2000 system. Static electricity from a nylon carpet
and air that was too dry created problems. Eventually, the
static electricity destroyed camera's USB interface.
Informing computer before removing USB cable is a data
protection function. USB peripherals should never lock or
crash an NT based OS such as Windows 2000.
Meanwhile, I find numerous 3 volt external power supplies in
10 and 18 watt sizes just in www.alliedelec.com alone. But
again, required is some idea of acceptable ripple voltage and
regulation. Otherwise, spend more money on a superior power
supply. Figure at minimum $20.
Daniel Morrow wrote:
| Quote: | I am glad I asked before trying it. I have reviewed what you all have
said and realized that it normally isn't a problem (supplying power
to a digital camera) because people almost always just plain use
batteries, and after kicking things around in my head realized I
won't do otherwise (i.e. I will stick to batteries for these 2
cameras), my fathers' pocket camera can run off of a 1300 milliampere
universal so when I transfer the images from the camera to computer
the camera will stay on and not shut off due to low battery levels,
in turn that will keep windows 2000 professional service pack 4 from
crashing etc. (windows 2000 and xp suffer from not being true plug
and play compatible operating systems - if you shut a device off
without telling the operating system to unplug/eject a device through
the windows add/remove hardware wizard the operating system can
crash). The pocket camera can take 40 to 50 minutes to download 1 32
megabyte flash memory card's worth of pictures and at times there are
2 or 3 of those cards to download, so if the camera shuts off after 1
I usually have to reboot to do the next, etc.. I would like to just
be able to leave the camera on for an hour and get back to it then
instead of waiting for the variable amount of time to pass by
watching it the whole time and start the next card download. Do you
see what was my predicament before my purchase of a universal 1300 ma
power supply? That power supply has solved my problem. Now one of my
2 other cameras is labled at 3 volts at 2 amps for a wall-wart
wall-mount power supply, but because these 2 cameras use usb to
transfer their card's memory contents it is fast enough for me to
monitor the transfer, etc.. The pocket camera uses the serial port
for transferring so that is why it is so slow. If these newer
operating systems were as plug and playable as windows 98 first
edition for example then this wouldn't even be a problem at all.
Solution - I will use my current wall mount universal power supply
with the pocket camera and use batteries (rechargeable) for the 2
other cameras. It is really frustrating to not be able to find decent
high powered power supply though - I doubt anyone has ever really run
into this problem I guess though. I can't even get the add/remove
hardware wizard to list any devices when I want to unplug/eject a
device too, and that's on 2 separate computers. I don't know what's
going on with that but what I do instead is do my "unplug/eject a
device"ing from the device manager which seems to do the job 100%.
Good luck all and thanks for keeping me from frying digital cameras,
later! |
|
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|
|
Jasen Betts
Guest
|
| Posted:
Tue Nov 15, 2005 3:58 pm Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
On 2005-11-14, Daniel Morrow <videoman@ccountry.net> wrote:
| Quote: |
Hi everyone! I am trying to find a cheap way I can increase the
current capacity of a power supply by installing fuses to each output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have researched
power supply providers and have found no usable/cheap enough power
supplies (those dedicated power supplies are very expensive -
especially if you have to buy one for every single digital camera)
and found no suitable devices, and I don't want to convert a pc power
supply because there appears to be no way to avoid the intense heat
from seemingly any appropriate load. Also - I have never found a
universal wall mount power supply that would deliver enough current
for a digital camera. So, can I successfully do what I proposed
(parallel connected power supplies)? Any dangers? Plus - I would have
every individual power supply connected to a power strip with switch
as a group. Your comments are welcome. Good luck and later!
|
use unregulated (or AC) powersupplies all of the same model.
(if AC rectify them individually)
connect them in parrallel and then feed the combined output into the regulator.
Doing that should ensure that the load is shared evenly by the powersupplies.
how much power does youy digital; camera need, I've seem "wall mount"
powerfupplies upto about 12Watts.
--
Bye.
Jasen |
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|
|
phatty mo
Guest
|
| Posted:
Mon Nov 21, 2005 5:35 pm Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
Daniel Morrow wrote:
| Quote: | -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Bottom posted.
- --
You can find my public key at https://keyserver1.pgp.com
"Ken Taylor" <ken123@xtra.co.nz> wrote in message
news:gK6ef.1166$vH5.73060@news.xtra.co.nz...
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378e7d7.5796401@News.Individual.NET...
On Tue, 15 Nov 2005 07:46:39 +1300, "Ken Taylor"
ken123@xtra.co.nz> wrote:
"Gerard Bok" <bok118@zonnet.nl> wrote in message
news:4378913b.11322538@News.Individual.NET...
On Sun, 13 Nov 2005 18:27:45 -0800, "Daniel Morrow"
videoman@ccountry.net> wrote:
Hi everyone! I am trying to find a cheap way I can increase
the
current capacity of a power supply by installing fuses to each
output
of multiple universal power supplies, setting each polarity
correctly, setting each voltage correctly, but in other words
combine
power supplies to get up to 3 amps or more available from the
parallel power supplies, to drive digital cameras. I have
researched
power supply providers and have found no usable/cheap enough
power
supplies (those dedicated power supplies are very expensive -
By far the cheapest solution is to buy a single 3 Amp supply.
Be very VERY carefull: it's not uncommon for 3 Amp supplies to
supply a much higher output voltage than the label says.
Wich may well result in a 'final flash' from your camera :-)
What is so unusual about a 3A supply that it's output isn't
specified
correctly?
Some supplies are stabilized. Some supplies provide the stated
output voltage (more or less) under the specified load.
And under no or low load a voltage that is much higher.
A digital camera connected to a PSU is unlikely to draw 3 Amps
all the time :-)
Also: some appliances take their input voltage to an internal
stabilizer. While others just supply it to their chips.
Without good knowledge of both the PSU and the camera, it is
easy
to blow the camera.
--
Kind regards,
Gerard Bok
Um, yeah, well I was kinda assuming that by 3A a supply isn't going
to be
unregulated, but it's a fair comment. Pre-morning tea. :-)
Given that the OP is only after about 3A total, a single
switch-mode (hence
regulated and stabilized) wall-wart/power-pack is a good option and
certainly better than trying to connect several up in parallel.
Cheers.
Ken
I am glad I asked before trying it. I have reviewed what you all have
said and realized that it normally isn't a problem (supplying power
to a digital camera) because people almost always just plain use
batteries, and after kicking things around in my head realized I
won't do otherwise (i.e. I will stick to batteries for these 2
cameras), my fathers' pocket camera can run off of a 1300 milliampere
universal so when I transfer the images from the camera to computer
the camera will stay on and not shut off due to low battery levels,
in turn that will keep windows 2000 professional service pack 4 from
crashing etc. (windows 2000 and xp suffer from not being true plug
and play compatible operating systems - if you shut a device off
without telling the operating system to unplug/eject a device through
the windows add/remove hardware wizard the operating system can
crash). The pocket camera can take 40 to 50 minutes to download 1 32
megabyte flash memory card's worth of pictures and at times there are
2 or 3 of those cards to download,
|
Whoa,40-50 minutes for one 32meg card?
Sounds like that might be your problem -it shouldn't take that long!
Some cards/readers are a bit slower than others,but if it takes that
long,something else is probably wrong.
Do you have the correct drivers installed(if needed?),etc?
| Quote: | so if the camera shuts off after 1
I usually have to reboot to do the next, etc.. I would like to just
be able to leave the camera on for an hour and get back to it then
instead of waiting for the variable amount of time to pass by
watching it the whole time and start the next card download. Do you
see what was my predicament before my purchase of a universal 1300 ma
power supply? That power supply has solved my problem. Now one of my
2 other cameras is labled at 3 volts at 2 amps for a wall-wart
wall-mount power supply, but because these 2 cameras use usb to
transfer their card's memory contents it is fast enough for me to
monitor the transfer, etc.. The pocket camera uses the serial port
for transferring so that is why it is so slow. If these newer
operating systems were as plug and playable as windows 98 first
edition for example then this wouldn't even be a problem at all.
Solution - I will use my current wall mount universal power supply
with the pocket camera and use batteries (rechargeable) for the 2
other cameras. It is really frustrating to not be able to find decent
high powered power supply though - I doubt anyone has ever really run
into this problem I guess though. I can't even get the add/remove
hardware wizard to list any devices when I want to unplug/eject a
device too, and that's on 2 separate computers. I don't know what's
going on with that but what I do instead is do my "unplug/eject a
device"ing from the device manager which seems to do the job 100%.
Good luck all and thanks for keeping me from frying digital cameras,
later!
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Daniel Morrow
Guest
|
| Posted:
Tue Nov 22, 2005 9:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Bottom posted.
- --
You can find my public key at https://keyserver1.pgp.com
"phatty mo" <ptaylor@nospam.com> wrote in message
news:sDlgf.6$uJ4.4839@news.uswest.net...
| Quote: | Whoa,40-50 minutes for one 32meg card?
Sounds like that might be your problem -it shouldn't take that
long!
Some cards/readers are a bit slower than others,but if it takes
that
long,something else is probably wrong.
Do you have the correct drivers installed(if needed?),etc?
so if the camera shuts off after 1
I usually have to reboot to do the next, etc.. I would like to
just
be able to leave the camera on for an hour and get back to it
then
instead of waiting for the variable amount of time to pass by
watching it the whole time and start the next card download. Do
you
see what was my predicament before my purchase of a universal
1300 ma
power supply? That power supply has solved my problem. Now one of
my
2 other cameras is labled at 3 volts at 2 amps for a wall-wart
wall-mount power supply, but because these 2 cameras use usb to
transfer their card's memory contents it is fast enough for me
to
monitor the transfer, etc.. The pocket camera uses the serial
port
for transferring so that is why it is so slow. If these newer
operating systems were as plug and playable as windows 98 first
edition for example then this wouldn't even be a problem at all.
Solution - I will use my current wall mount universal power
supply
with the pocket camera and use batteries (rechargeable) for the
2
other cameras. It is really frustrating to not be able to find
decent
high powered power supply though - I doubt anyone has ever really
run
into this problem I guess though. I can't even get the
add/remove
hardware wizard to list any devices when I want to unplug/eject
a
device too, and that's on 2 separate computers. I don't know
what's
going on with that but what I do instead is do my "unplug/eject
a
device"ing from the device manager which seems to do the job
100%.
Good luck all and thanks for keeping me from frying digital
cameras,
later!
|
There's nothing wrong dude - that camera uses a serial rs-232
interface to the computer (i.e. not speedy usb just a telephone modem
type of speed). I thought I mentioned the serial interface but maybe
I did later (i.e. after that particular post). My particular problem
has been solved for me but I wonder about other user's particular
setups having an unavoidable problem (i.e. they don't have a powerful
enough power supply for their particular serial camera so their
camera shuts off after 40-50 minutes while they are away and come
back to their computer and are unable to continue without proper
device manager (unique) knowledge and so have to reboot for the next
set of pictures). Again - the camera I am talking about uses serial
rs-232 = not usb. Good luck and later!
P.s. - A free windows automater/scripting program would probable be
useable for those other people to just leave their computer while the
transfer is taking place by properly shutting the device off with
device manager, but that might take some programming knowledge.
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CWatters
Guest
|
| Posted:
Wed Nov 23, 2005 9:35 am Post subject:
Re: Power supplies in parallel for more current/same voltage |
|
|
"Daniel Morrow" <videoman@ccountry.net> wrote in message
news:11o5meae1kj44af@corp.supernews.com...
| Quote: | There's nothing wrong dude - that camera uses a serial rs-232
interface to the computer (i.e. not speedy usb just a telephone modem
type of speed).
|
I guess this isn't your normal consumer camera? What is it some kind of
scientific/lab camera? |
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