13 Oct
2013
13 Oct
'13
10:13 p.m.
Rob Doyle wrote:
On 10/13/2013 1:22 AM, Holm Tiffe wrote:
Yes Rob and Kyle, the eloctrophysical relations are clear to me.
When you have a Transformer build for 60Hz and build under economical
pressure using a high magnetical Fluxes just below what the core can
provide before to get into stauration, you get a hot Transformer when you
connect it to 50Hz.
No Problem the other way around.
But:
The rest of the world is building equipment designed for 50Hz so
the PSUs there are'nt running more bad then in the US.
Don't know any 25Hz Grid here from the past,i but there where some DC Grids
long time ago. Railway electrical Grids are build with 16,75 Hz (newer
ones with 50Hz).
...Don't get me wrong, but I hope I have never to use a 110/240V Power
grid, European standards are much better I think :-) I have 3 Phase Power
230/400V here in the House and don't want to miss it.
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
Kyle Owen wrote:
It's all about the amount of iron in the power transformer.
The higher the frequency, the smaller the transformer can be. That's why
aircraft used 400 Hz. Less iron. Less weight.
That's also why switching power supplies are so much smaller. They
operate at much higher frequencies.
In general you can power 50 Hz equipment from 60 Hz. But you have to be
careful about powering 60 Hz equipment from 50 Hz - the transformer may
saturate. Don't even think about powering 400 Hz equipment from 50 Hz or
60 Hz.
There is nothing inherently /bad/ about 50 Hz.
Rob.
On Fri, Oct 11, 2013 at 2:43 PM, Josh Dersch
<derschjo at gmail.com> wrote:
OMG...in almost the entire world PSU's are working bad because of the 50Hz?
What about 400Hz from airplanes?
SCNR,
Holm
Thanks for the confirmations. The step-up from
110->220 should be pretty
easy to deal with, but I'm wondering how tolerant this supply would be of
60Hz A/C. I suppose if it's a direct clone of the Dec Pro's supply it
might be OK, I'll have to compare :).
Typically, power supplies operate better at 60Hz than 50Hz, particularly
the old linear supplies. Modern switching supplies are very tolerant of
under and over voltages with a wide range of frequencies. My bet is it'll
run just fine with 60Hz.
Kyle