Hello All,
I was having a look through the various Geddon threads and it led me to Norton AirPower psu (I believe Leigh posts here?):
http://www.cherrynorton.pwp.blueyonder.co.uk/nt/APKit.htm
This shown a PSU made with two variacs instead of fixed TXs. I had a look at the various options for variacs on ebay and I came across this vintage 2kVA Variac:
http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=150959954554
Could this be used instead of the standard 2x55V 500VA TX that most tend to use in a DIY Geddon, but with the additional possibility of varying/optimising voltage to minimise motor noise?
Additionally, sq291365547 (sp?) used two selected 0.1uF WIMA caps for the phase-shift element that were optimised for his Premotec motor. How do you assess this? Can you take a measurement on the motor or do you need to trial and error whilst holding the motor out of the plinth to assess?
Motor is a a 110v AC motor in a Pink Triange PT TOO (not sure if it is Airpax or Premotec or what). The PT Too PSU works fine but they are pretty badly built so I was considering building a Geddon or AirPower for longer term use.
James.
I was having a look through the various Geddon threads and it led me to Norton AirPower psu (I believe Leigh posts here?):
http://www.cherrynorton.pwp.blueyonder.co.uk/nt/APKit.htm
This shown a PSU made with two variacs instead of fixed TXs. I had a look at the various options for variacs on ebay and I came across this vintage 2kVA Variac:
http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=150959954554
Could this be used instead of the standard 2x55V 500VA TX that most tend to use in a DIY Geddon, but with the additional possibility of varying/optimising voltage to minimise motor noise?
Additionally, sq291365547 (sp?) used two selected 0.1uF WIMA caps for the phase-shift element that were optimised for his Premotec motor. How do you assess this? Can you take a measurement on the motor or do you need to trial and error whilst holding the motor out of the plinth to assess?
Motor is a a 110v AC motor in a Pink Triange PT TOO (not sure if it is Airpax or Premotec or what). The PT Too PSU works fine but they are pretty badly built so I was considering building a Geddon or AirPower for longer term use.
James.
This site contains affiliate links for which pink fish media may be compensated.