UTC N-9722 Data?

[Tonni[_2_]]

Hi!

Is there anyone inhere that knows the specs of UTC N-9722?
It's pulled out of a old medical instrument (wery messed up)
That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)

Thanks in adwance!
Tonni

[[email protected]]

On Jan 24, 12:14*pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> Hi!
>
> Is there anyone inhere that knows the specs of *UTC N-9722?
> It's pulled out of a old medical instrument (wery messed up)
> That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> Thanks in adwance!
> Tonni

Do you know what medical instrument it came from? That number was
not a regular model, probably a special order of some sort.

[Tonni[_2_]]

> skrev i en meddelelse
...
On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> Hi!
>
> Is there anyone inhere that knows the specs of UTC N-9722?
> It's pulled out of a old medical instrument (wery messed up)
> That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> Thanks in adwance!
> Tonni

Do you know what medical instrument it came from? That number was
not a regular model, probably a special order of some sort.

Hi!

It came from a pulsegenerator made to stimulate muscels...
- Simply called "Stimulator"
And made by Grass Instruments Co. Quincy 70, Mass. USA

It was made of mil spec components...
The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late '50es.

Well, reckon i have make some measurements... But they'll not tell about max
currents.

Thanks for your interest! :-)

Kind regards
Tonni

[[email protected]]

On Jan 26, 11:54*am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> > skrev i en ...
> On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
> > Hi!
>
> > Is there anyone inhere that knows the specs of UTC N-9722?
> > It's pulled out of a old medical instrument (wery messed up)
> > That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> > Thanks in adwance!
> > Tonni
>
> * *Do you know what medical instrument it came from? That number was
> not a regular model, probably a special order of some sort.
>
> Hi!
>
> It came from a pulsegenerator made to stimulate muscels...
> - Simply called "Stimulator"
> And *made by Grass Instruments Co. Quincy 70, Mass. USA
>
> It was made of mil spec components...
> The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late '50es.
>
> Well, reckon i have make some measurements... But they'll not tell about max
> currents.
>
> Thanks for your interest! :-)
>
> Kind regards
> Tonni

Is it a power transformer or output? Tried to find it in
old UTC catalogs, but it wasn't listed anywhere. "N"-prefix was
assigned only to mil spec models, that's a fact.

[[email protected]]

On Jan 26, 11:54*am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> > skrev i en ...
> On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
> > Hi!
>
> > Is there anyone inhere that knows the specs of UTC N-9722?
> > It's pulled out of a old medical instrument (wery messed up)
> > That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> > Thanks in adwance!
> > Tonni
>
> * *Do you know what medical instrument it came from? That number was
> not a regular model, probably a special order of some sort.
>
> Hi!
>
> It came from a pulsegenerator made to stimulate muscels...
> - Simply called "Stimulator"
> And *made by Grass Instruments Co. Quincy 70, Mass. USA
>
> It was made of mil spec components...
> The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late '50es.
>
> Well, reckon i have make some measurements... But they'll not tell about max
> currents.
>
> Thanks for your interest! :-)
>
> Kind regards
> Tonni
Just Googled Grass Instruments. Apparently they moved to
Rockland,Mass. They may still have info on this contraption !

[Tonni[_2_]]

> skrev i en meddelelse
...
On Jan 26, 11:54 am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> > skrev i en
> ...
> On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
> > Hi!
>
> > Is there anyone inhere that knows the specs of UTC N-9722?
> > It's pulled out of a old medical instrument (wery messed up)
> > That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> > Thanks in adwance!
> > Tonni
>
> Do you know what medical instrument it came from? That number was
> not a regular model, probably a special order of some sort.
>
> Hi!
>
> It came from a pulsegenerator made to stimulate muscels...
> - Simply called "Stimulator"
> And made by Grass Instruments Co. Quincy 70, Mass. USA
>
> It was made of mil spec components...
> The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late
> '50es.
>
> Well, reckon i have make some measurements... But they'll not tell about
> max
> currents.
>
> Thanks for your interest! :-)
>
> Kind regards
> Tonni
Just Googled Grass Instruments. Apparently they moved to
Rockland,Mass. They may still have info on this contraption !

Hi again!

It's a mainstrannie. And the only iron found in the device!
Both the cabinet and chassis are out of alu. :-)
Think I'll have to try a direct contact with Grass Instr. - As You suggest
There could be a small chance they still have some specs...
Will let You know if something turns up!!!

Once more, many thanks for Your help and suggestions!!!

Best regards
Tonni

[[email protected]]

On Jan 28, 11:18*am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> > skrev i en ...
> On Jan 26, 11:54 am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
>
>
> > > skrev i en
> > ...
> > On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
> > > Hi!
>
> > > Is there anyone inhere that knows the specs of UTC N-9722?
> > > It's pulled out of a old medical instrument (wery messed up)
> > > That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> > > Thanks in adwance!
> > > Tonni
>
> > Do you know what medical instrument it came from? That number was
> > not a regular model, probably a special order of some sort.
>
> > Hi!
>
> > It came from a pulsegenerator made to stimulate muscels...
> > - Simply called "Stimulator"
> > And made by Grass Instruments Co. Quincy 70, Mass. USA
>
> > It was made of mil spec components...
> > The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late
> > '50es.
>
> > Well, reckon i have make some measurements... But they'll not tell about
> > max
> > currents.
>
> > Thanks for your interest! :-)
>
> > Kind regards
> > Tonni
>
> * *Just Googled Grass Instruments. Apparently they moved to
> Rockland,Mass. They may still have info on this contraption !
>
> Hi again!
>
> It's a mainstrannie. And the only iron found in the device!
> Both the cabinet and chassis are out of alu. :-)
> Think I'll have to try a direct contact with Grass Instr. - As You suggest
> There could be a small chance they still have some specs...
> Will let You know if something turns up!!!
>
> Once more, many thanks for Your help and suggestions!!!
>
> Best regards
> Tonni- Hide quoted text -
>
> - Show quoted text -

What rating is the AC line fuse? Since the rectifier is a 5V4 the
total DC current is not that great,according to my manuals. This
transformer may be too small for a serious power amp. Lots of luck.

[Tonni[_2_]]

> skrev i en meddelelse
...
On Jan 28, 11:18 am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
> > skrev i en
> ...
> On Jan 26, 11:54 am, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
>
>
> > > skrev i en
> > ...
> > On Jan 24, 12:14 pm, "Tonni" <hauge*snabel*hardware*dryp*dk> wrote:
>
> > > Hi!
>
> > > Is there anyone inhere that knows the specs of UTC N-9722?
> > > It's pulled out of a old medical instrument (wery messed up)
> > > That had some 11 tubes in it. - Five of these were 6SN7 RCA's. :-)
>
> > > Thanks in adwance!
> > > Tonni
>
> > Do you know what medical instrument it came from? That number was
> > not a regular model, probably a special order of some sort.
>
> > Hi!
>
> > It came from a pulsegenerator made to stimulate muscels...
> > - Simply called "Stimulator"
> > And made by Grass Instruments Co. Quincy 70, Mass. USA
>
> > It was made of mil spec components...
> > The tubes inside were 5*6SN7, 2*0D3, 6AU7, 6SJ7 and 5V4 All RCA late
> > '50es.
>
> > Well, reckon i have make some measurements... But they'll not tell about
> > max
> > currents.
>
> > Thanks for your interest! :-)
>
> > Kind regards
> > Tonni
>
> Just Googled Grass Instruments. Apparently they moved to
> Rockland,Mass. They may still have info on this contraption !
>
> Hi again!
>
> It's a mainstrannie. And the only iron found in the device!
> Both the cabinet and chassis are out of alu. :-)
> Think I'll have to try a direct contact with Grass Instr. - As You suggest
> There could be a small chance they still have some specs...
> Will let You know if something turns up!!!
>
> Once more, many thanks for Your help and suggestions!!!
>
> Best regards
> Tonni- Hide quoted text -
>
> - Show quoted text -
>
> What rating is the AC line fuse? Since the rectifier is a 5V4 the
> total DC current is not that great,according to my manuals. This
> transformer may be too small for a serious power amp. Lots of luck.

It's fused 3/4 A @ 220 V So i guess you're right! But 165 VA could fit a
preamp nicely! So i guess thats what it'll be up for... Or perhaps as
separate trannie for a input/driver in a poweramp... But well see if Grass
Instruments has something on it! - If they even bother...!