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From: Uriah on 22 Oct 2009 15:34
I need to provide a 10VAC power supply to a cirris cable tester and
they said it was unbalanced. It is a three pin input with the center
being neutral and each side is hot 10VAC but it is unbalanced. What
do they mean by unbalanced? How would I wire that up? And is there a
way to tell how to wire it in from looking at the device, I don't have
the that power supply.
Thanks
Russ
From: Tom Biasi on 23 Oct 2009 06:30

"Uriah" <uriahsky(a)hotmail.com> wrote in message
news:061571ec-d345-4a2b-b21a-f36063b639e1(a)m3g2000pri.googlegroups.com...
>I need to provide a 10VAC power supply to a cirris cable tester and
> they said it was unbalanced. It is a three pin input with the center
> being neutral and each side is hot 10VAC but it is unbalanced. What
> do they mean by unbalanced? How would I wire that up? And is there a
> way to tell how to wire it in from looking at the device, I don't have
> the that power supply.
> Thanks
> Russ
Do you have a schematic of the unit?


From: Allen Bong on 23 Oct 2009 07:01
On Oct 23, 3:34 am, Uriah <uriah...(a)hotmail.com> wrote:
> I need to provide a 10VAC power supply to a cirris cable tester and
> they said it was unbalanced. It is a three pin input with the center
> being neutral and each side is hot 10VAC but it is unbalanced.  What
> do they mean by unbalanced?  How would I wire that up?  And is there a
> way to tell how to wire it in from looking at the device, I don't have
> the that power supply.
> Thanks
> Russ

Which model of cable tester are you using?
There are 10 models here:

http://www.cirris.com/cable/tester/testers.html

and this model use 110/220V ac or 9V battery:

http://www.cirris.com/cable/tester/1000lc.pdf

Allen


From: Uriah on 23 Oct 2009 16:31
On Oct 23, 4:01 am, Allen Bong <allenbsf6...(a)gmail.com> wrote:
> On Oct 23, 3:34 am, Uriah <uriah...(a)hotmail.com> wrote:
>
> > I need to provide a 10VAC power supply to a cirris cable tester and
> > they said it wasunbalanced. It is a three pin input with the center
> > being neutral and each side is hot 10VAC but it isunbalanced.  What
> > do they mean byunbalanced?  How would I wire that up?  And is there a
> > way to tell how to wire it in from looking at the device, I don't have
> > the that power supply.
> > Thanks
> > Russ
>
> Which model of cable tester are you using?
> There are 10 models here:
>
> http://www.cirris.com/cable/tester/testers.html
>
> and this model use 110/220Vacor 9V battery:
>
> http://www.cirris.com/cable/tester/1000lc.pdf
>
> Allen

It is a Cirris 1000 a discontinued model. But it uses the three pin
10VAC adapter. I emailed them and they explained what unbalanced
meant to them. Just that the voltage could fluctuate a little from the
10VAC? No schematic available. So if I wire this with an adapter
that comes from wall is it ground to 10VAC on each side or is it 10VAC
between the two sides? Center tap to 10VAC on the left and center tap
to 10VAC on the right.... or 10VAC from left to right then it would be
gnd to 5VAC to the left and gnd to 5VAC to the right? More questions.
I have damaged things by not being sure of stuff like this.
Thank you.
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