[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor

ooops, okay sorry ;)))
----- Original Message ----- From: "Clive Penfold" <clivepenfold@xxxxxxxxxxxxxx> 
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Thursday, December 09, 2010 8:32 PM
Subject: Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor 


Penfold Motors even!!!




________________________________
From: Teslalabor <teslalabor@xxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Thursday, 9 December, 2010 19:18:56
Subject: Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor
Next week I get some 1000V 6A diodes. Then I will modify a 800W universal motor from a washing machine and do the scope test (with magnets and pick up coil) to 
see, how good it sync's to the line frequency.
Will put a video of this to youtube. The torque of the "Pensold Motors" should 
be much bigger than any modified asynch. motor with flats on its armature.

Stefan

----- Original Message ----- From: "Phil Tuck" <phil@xxxxxxxxxxx>
To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
Sent: Thursday, December 09, 2010 7:38 PM
Subject: RE: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor 


Dwp,
 >Depends, rather, on the definition of synchronous.  Anything
  >spinning at 3000 rpm (or distinct other rpms) will appear
  >synchronous by this test,
Which test are you referring to? The one you mistakenly thought was happening 
or the test I describe in detail using the scope and an infra-red detector /
emitter pair.


At That Set of power/load/rpm.  A
 > synchronous motor, by engineering definition will lock to
  >the line frequency, quasi independent of load.

Exactly. That is what the test that I describe does.


Regards
Phil

www.hvtesla.com

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of 
dave pierson
Sent: 09 December 2010 14:51
To: Tesla Coil Mailing List
Subject: Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor 




I think there is some misunderstanding here. I don't think the sensor
and magnet were triggering the strobe as you do (I think that is what
you're thinking?)



The presumption is that the magnet was attached to the motor shaft
such that it passed and induced a voltage into a fixed coil once per
rev.



If so, the output will always coincide with the electrode passing that
point in space.



If the scope is setup to show both channels overlaid, and the output
from the sensor coil is fed into one channel, with the mains fed in on
the other channel, and the output from the sensor subsequently always
coincides with the same point on the mains sine wave, then the motor
is synchronous.


  Perhaps.

  Depends, rather, on the definition of synchronous.  Anything
  spinning at 3000 rpm (or distinct other rpms) will appear
  synchronous by this test, At That Set of power/load/rpm.  A
  synchronous motor, by engineering definition will lock to
  the line frequency, quasi independent of load.

   best
    dwp
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla 
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla