Unlabelled and disconnected mains primary wires

[Ron]

On 03/06/2010 08:27, N_Cook wrote:

Cydrome Leader<presence@MUNGEpanix.com> wrote in message
news:hu6geg$qkj$1@reader1.panix.com...
N_Cook<diverse@tcp.co.uk> wrote:
About year 1999, USA make, for export
In line , not 2 or more separate primary windings, DC ohms to nearest
0.1
ohm. I'm assuming same gauge wire throughout
Labelled by me as A,B,C,D,E crossplot (message souce maybe equispaced
font)

--- A B C D E
A --- 9.2 8.5 12.5 1.5
B 9.2 --- 0.6 3.6 7.6
C 8.5 0.6 --- 4.2 7.6
D 12.5 3.6 4.2 --- 11.1
E 1.5 7.6 7.6 11.1 ---


Would D-E / D-A be 220/240Vac or 230/250V ac?
what would likely be the 110 or 130V interconnctions option ?
Other than checking using a variac , any other tips ?

you never mentioned what you're even talking about, or what it's from.

Assuming it's something like an "international" linear power supply, there
would be
windings for 100, 120 220 and 240 volts based off a combination of
terminals. US made
transformers for domestic only use would generally max out at 3 or 4
terminals for
120/240 use.

here's a diagram of how these international transformers work:


http://www.slpower.com/Upload/Technical/20070404102642455201154_41-32512F_ML
_Series.pdf


That transformer type is the 2 separate primaries, not the subject of this
thread.
Does anyone have the generic name for these wasteful construction made in or
for USA , for export kit ? the ones with a (electrically) continuous single
primary winding

Multitap?

 

[N_Cook]

Ron <ron@lunevalleyaudio.com> wrote in message
news:z5KdnW0VXPQ_7prRnZ2dnUVZ8hKdnZ2d@bt.com..

Multitap?

You can have multitaps on dual primary ones for variants on the theme of
110/240V, so not an exclusive term

 

[Grant]

On Thu, 3 Jun 2010 09:12:07 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

Grant <omg@grrr.id.au> wrote in message
news:tkne06ltbli2a5aij6qc112iti0ed8tntp@4ax.com...
On Thu, 3 Jun 2010 08:27:03 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

Cydrome Leader <presence@MUNGEpanix.com> wrote in message
news:hu6geg$qkj$1@reader1.panix.com...
N_Cook <diverse@tcp.co.uk> wrote:
About year 1999, USA make, for export
In line , not 2 or more separate primary windings, DC ohms to nearest
0.1
ohm. I'm assuming same gauge wire throughout
Labelled by me as A,B,C,D,E crossplot (message souce maybe equispaced
font)

--- A B C D E
A --- 9.2 8.5 12.5 1.5
B 9.2 --- 0.6 3.6 7.6
C 8.5 0.6 --- 4.2 7.6
D 12.5 3.6 4.2 --- 11.1
E 1.5 7.6 7.6 11.1 ---


Would D-E / D-A be 220/240Vac or 230/250V ac?
what would likely be the 110 or 130V interconnctions option ?
Other than checking using a variac , any other tips ?

you never mentioned what you're even talking about, or what it's from.

Assuming it's something like an "international" linear power supply,
there
would be
windings for 100, 120 220 and 240 volts based off a combination of
terminals. US made
transformers for domestic only use would generally max out at 3 or 4
terminals for
120/240 use.

here's a diagram of how these international transformers work:



http://www.slpower.com/Upload/Technical/20070404102642455201154_41-32512F_M
L
_Series.pdf


That transformer type is the 2 separate primaries, not the subject of
this
thread.
Does anyone have the generic name for these wasteful construction made in
or
for USA , for export kit ? the ones with a (electrically) continuous
single
primary winding

Autotransformer.

What results from driving the secondary with a low voltage?

Grant.
--
http://bugs.id.au/


My understanding of the term autotransformer is primary and secondary
electrically continuous, ie no electrical isolation

You're not looking for answers, are you?

Grant.
--
http://bugs.id.au/

 

[Phil Allison]

"Nutcase Kook is So Full of Shit "

Does anyone have the generic name for these wasteful construction made in
or
for USA , for export kit ? the ones with a (electrically) continuous
single
primary winding

** Wot a load of utter bollocks
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Most audio amps made in the ** UK ** between the mid 1960s and late 1990s
had
multi-voltage, single winding AC transformers.

Check any old schem from Marshall, Vox or Sugden etc, et alia.

http://www.audiomisc.co.uk/JES/A21series2/A21series2.html

http://www.schematicheaven.com/marshallamps/jcm800_lead_mstvol_50w_2204.pdf

http://www.schematicheaven.com/voxamps/ac301960.pdf

http://www.schematicheaven.com/voxamps/ac151960.pdf

Nutcase Kook is Soooooo... Full of Shit




..... Phil

 

[Phil Allison]

Nutcase Kook is Sooooo Full of Shit

Multitap?


You can have multitaps on dual primary ones for variants on the theme of
110/240V, so not an exclusive term

** Nutcase Kook is Sooooooooooooo Full of Shit !!!




..... Phil

 

[David Nebenzahl]

On 6/3/2010 2:45 AM Grant spake thus:

On Thu, 3 Jun 2010 09:12:07 +0100, "N_Cook" <diverse@tcp.co.uk> wrote:

Grant <omg@grrr.id.au> wrote in message
news:tkne06ltbli2a5aij6qc112iti0ed8tntp@4ax.com...

What results from driving the secondary with a low voltage?

My understanding of the term autotransformer is primary and
secondary electrically continuous, ie no electrical isolation

You're not looking for answers, are you?

He rarely is. Just sitting at the bar bending the ears of whatever poor
saps sitting nearby are willing to listen to his ramblings.


--
The fashion in killing has an insouciant, flirty style this spring,
with the flaunting of well-defined muscle, wrapped in flags.

- Comment from an article on Antiwar.com (http://antiwar.com)

 

[Cydrome Leader]

N_Cook <diverse@tcp.co.uk> wrote:

Cydrome Leader <presence@MUNGEpanix.com> wrote in message
news:hu6geg$qkj$1@reader1.panix.com...
N_Cook <diverse@tcp.co.uk> wrote:
About year 1999, USA make, for export
In line , not 2 or more separate primary windings, DC ohms to nearest
0.1
ohm. I'm assuming same gauge wire throughout
Labelled by me as A,B,C,D,E crossplot (message souce maybe equispaced
font)

--- A B C D E
A --- 9.2 8.5 12.5 1.5
B 9.2 --- 0.6 3.6 7.6
C 8.5 0.6 --- 4.2 7.6
D 12.5 3.6 4.2 --- 11.1
E 1.5 7.6 7.6 11.1 ---


Would D-E / D-A be 220/240Vac or 230/250V ac?
what would likely be the 110 or 130V interconnctions option ?
Other than checking using a variac , any other tips ?

you never mentioned what you're even talking about, or what it's from.

Assuming it's something like an "international" linear power supply, there
would be
windings for 100, 120 220 and 240 volts based off a combination of
terminals. US made
transformers for domestic only use would generally max out at 3 or 4
terminals for
120/240 use.

here's a diagram of how these international transformers work:


http://www.slpower.com/Upload/Technical/20070404102642455201154_41-32512F_ML
_Series.pdf


That transformer type is the 2 separate primaries, not the subject of this
thread.
Does anyone have the generic name for these wasteful construction made in or
for USA , for export kit ? the ones with a (electrically) continuous single
primary winding

You're right- they must have just cheapened their transformers. Condor
stuff used to have the 5 terminal primary windings. If you can find a
manual for an older generation "international linear power supply" how
those windings are setup is diagrammed.

They're not a single winding though, and not nearly as wasteful as 50Hz
mains frequency when it comes to excessive use of materials and size.