Hi to all!
I need of your help.
I have a lot of 400Hz Muirhead Servomotor-Tachometer generator mod.
15M81A,fom Mil surplus.
For 400Hz supply isn't a problem but I Don't have idea how to apply or
drivethis servomotors.
This motor is supplied with a 115Vac primary plus two 13Vac control
windings, one tachometer 115 Vac primary with a secondary output.
Do you have some suggestion, scheme, application notes for use this motors
in a light CNC project?
Will be welcome application notes, schematic, literatures or URL's for
this devices..

I please you to reply by email, many thanks in advance and sorry for
bandwidht..

Ciao from Italy....
--
Ia ora na outou,
RedRoby

A Google search turns up a lot of info. For instance - the
manufacturer's web site. Have you asked them for info?

Beyond that - is this the same system that used to be (maybe still is)
called a selsyn? These used to be common in a lot of military
applications, such as radars sets, to rotate something inside the ship
in synchronism with something outside the ship. If so, there is a lot
of info on the web.

Bill Jeffrey
--------------

RedRoby wrote:

Hi to all!
I need of your help.
I have a lot of 400Hz Muirhead Servomotor-Tachometer generator mod.
15M81A,fom Mil surplus.
For 400Hz supply isn't a problem but I Don't have idea how to apply or
drivethis servomotors.
This motor is supplied with a 115Vac primary plus two 13Vac control
windings, one tachometer 115 Vac primary with a secondary output.
Do you have some suggestion, scheme, application notes for use this motors
in a light CNC project?
Will be welcome application notes, schematic, literatures or URL's for
this devices..

I please you to reply by email, many thanks in advance and sorry for
bandwidht..

Ciao from Italy....

La scrittura indecifrabile di "Bill Jeffrey" interruppe la mia
meditazione, imbrattandomi lo schermo con :

A Google search turns up a lot of info. For instance - the
manufacturer's web site. Have you asked them for info?

Beyond that - is this the same system that used to be (maybe still is)
called a selsyn? These used to be common in a lot of military
applications, such as radars sets, to rotate something inside the ship
in synchronism with something outside the ship. If so, there is a lot
of info on the web.

Bill Jeffrey

I don't know Bill,
in my little experience I have find the selsyn as a "motor" with a exciter
winding and a tri-phase windig for position transmission with another
selsyn.
In my case I have a "motor" with a exciter windings and two separate low
voltage windings. In the tachometer section O find a exciter winding and an
output winding.
I don't know as I can use this 'motors' because I don't know theyr phisical
principes an pratical applications.... :-((((
In Internet I haven't find this gender of motors...
Thanks....
--
Ia ora na outou,
RedRoby