Plugpacks

[F Murtz]

Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?

 

[Clocky]

On 9/11/2015 11:34 AM, F Murtz wrote:

Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?

As long as the DC voltage is the same and the current rating is the same
or higher then they will work just fine.

 

[F Murtz]

Clocky wrote:

On 9/11/2015 11:34 AM, F Murtz wrote:
Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?


As long as the DC voltage is the same and the current rating is the same
or higher then they will work just fine.

It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and current.

 

[Clocky]

On 9/11/2015 6:35 PM, F Murtz wrote:

Clocky wrote:
On 9/11/2015 11:34 AM, F Murtz wrote:
Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?


As long as the DC voltage is the same and the current rating is the same
or higher then they will work just fine.


It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and current.

It would help if you link to the LED strip lights (and how many) and the
supplies in question.

 

[Pete]

It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and current.

The cheaper ones might not be regulated.

Peter

 

[Xeno]

On 10/11/2015 8:33 AM, Pete wrote:

It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and
current.

The cheaper ones might not be regulated.

Peter

Or the regulator mechanism might be just a tad on the 'simple' side with
commensurately limited effectiveness.

--

Xeno

 

[F Murtz]

Clocky wrote:

On 9/11/2015 6:35 PM, F Murtz wrote:
Clocky wrote:
On 9/11/2015 11:34 AM, F Murtz wrote:
Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?


As long as the DC voltage is the same and the current rating is the same
or higher then they will work just fine.


It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and
current.

It would help if you link to the LED strip lights (and how many) and the
supplies in question.

Just scroll down this lot, the ones marked led striplights or cctv are
only a few dollars.

http://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=12V+2A+dc+plug+packs&_sacat=0

 

[Clocky]

On 10/11/2015 11:55 AM, F Murtz wrote:

Clocky wrote:
On 9/11/2015 6:35 PM, F Murtz wrote:
Clocky wrote:
On 9/11/2015 11:34 AM, F Murtz wrote:
Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?


As long as the DC voltage is the same and the current rating is the
same
or higher then they will work just fine.


It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and
current.

It would help if you link to the LED strip lights (and how many) and the
supplies in question.


Just scroll down this lot, the ones marked led striplights or cctv are
only a few dollars.

http://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=12V+2A+dc+plug+packs&_sacat=0

They should do the job. The only issue with real cheap supplies can be
the quality of the internals and issues of safety in relation to
clearance and creepage but price isn't necessarily an indicator of quality.

I bought a 240V to 5V USB charger for $1 delivered and it was OK in
terms of construction yet others can be deadly.

 

[Ian Field]

"Xeno" <xenolith@optusnet.com.au> wrote in message
news:n1rb1s$tt2$1@dont-email.me...

On 10/11/2015 8:33 AM, Pete wrote:
It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and
current.

The cheaper ones might not be regulated.

Peter



Or the regulator mechanism might be just a tad on the 'simple' side with
commensurately limited effectiveness.

The type with iron-cored transformers seem to be a dying breed. The
regulation on those was usually pretty bad, although some contained a 78xx
regulator - they were better, but only low current.

Increasingly popular SMPSU types generally have much better regulation -
although years ago I encountered an Olivetti laptop power brick with not
much in the way of regulation. Voltage sensing and regulation was entirely
confined to the primary side of the chopper transformer. Presumably it was
followed by more precice regulators in the laptop itself.

 

[Chris Jones]

On 09/11/2015 14:34, F Murtz wrote:

Any body know if the 12V dc plugpacks sold to use with Led striplights
are different to ones sold for instance to power cheap piano keyboards
or radios etc.do they have less filtering or are they the same?

Not sure. You could see if the LEDs flicker, and/or measure the ripple
with a scope.

Also, I'd generally steer clear of the one dollar plug packs. Look up
the many teardowns of chargers that are now on the internet.

There are some reviews (especially for 5V USB chargers) that show the
current vs. voltage which is also informative.
http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html

Personally I would only buy a reputable brand one (Meanwell, Friwo,
etc.) from a distributor that I'd consider unlikely to supply faked
brandname products. I don't buy anything mains powered direct from ebay
suppliers in China, nor Dealextreme. If I did then I would have to open
it to inspect it which would likely break it. Otherwise I would not feel
happy leaving it powered when I am not in the room to deal with any
possible fire, nor would I be comfortable exposing my family members to
the possible risk of electric shock associated with inadequate creepage
distances.

High price doesn't guarantee a good product either, I'm sure plenty of
people will happily sell the worst of the illegal chargers for more than
the proper price of a well made one.

 

[Clocky]

On 10/11/2015 5:52 PM, Clocky wrote:

On 10/11/2015 11:55 AM, F Murtz wrote:
Clocky wrote:
On 9/11/2015 6:35 PM, F Murtz wrote:
Clocky wrote:
On 9/11/2015 11:34 AM, F Murtz wrote:
Any body know if the 12V dc plugpacks sold to use with Led
striplights
are different to ones sold for instance to power cheap piano
keyboards
or radios etc.do they have less filtering or are they the same?


As long as the DC voltage is the same and the current rating is the
same
or higher then they will work just fine.


It is just that the ones marked for led striplights can be half of the
cost of the ones not so marked.They can have the same voltage and
current.

It would help if you link to the LED strip lights (and how many) and the
supplies in question.


Just scroll down this lot, the ones marked led striplights or cctv are
only a few dollars.

http://www.ebay.com.au/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=12V+2A+dc+plug+packs&_sacat=0




They should do the job. The only issue with real cheap supplies can be
the quality of the internals and issues of safety in relation to
clearance and creepage but price isn't necessarily an indicator of quality.

I bought a 240V to 5V USB charger for $1 delivered and it was OK in
terms of construction yet others can be deadly.

Just to add, I'm not actually using it - I bought it with the intention
of tearing it down and inspecting it.