K&K Audio / Lundahl Transformers

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K&K Audio / Lundahl Transformers

240V version?

122.60.239.154

In Reply to: RE: Is this available? posted by KevinC on May 09, 2014 at 10:55:04

Any love for us here in New Zealand?

big j.

"... only a very few individuals understand as yet that personal salvation is a contradiction in terms."

Follow Ups:

RE: 240V version? - KevinC 04:59:21 05/14/14 (2)
There is always love for all of our former colonial brothers and sisters. ;+))

The center frequency can be supplied as 50Hz and there are built-in internal switches to select mains voltage (115/230) and motor supply voltage (115/230).

Kevin Carter
K&K Audio
www.kandkaudio.com
- RE: 240V version? - Gnnett 04:42:19 05/15/14 (1)
  Hi Kevin
  
  Seeing Jusbe's turntables seem to be idlers, does this mean this will work with shaded pole motors and the like?
  
  Cheers
  
  Grant
  - RE: 240V version? - KevinC 07:23:06 05/15/14 (0)
    I should make it clear that the only type of motor that this supply will work properly with is the hysteresis synchronous motor, the type most often present in "modern" audiophile turntables. It will not work with DC motors, three phase instrumentation motors, or shaded pole motors, nor will it work with the large motors in transcription/radio station type turntables. Commercial hysteresis synchronous motors typically have 4 or 5 wires (extra one being a case ground wire) and have a small capacitor between the "hot" AC mains lead and one of the motor wires. See the link below for a thorough discussion of synchronous motors, if you are unfamiliar.
    
    Kevin Carter
    K&K Audio
    www.kandkaudio.com
    - http://en.wikipedia.org/wiki/Synchronous_motor (Open in New Window)

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