Hi DIY Audio buffs,
I have a Ferguson PVD 111 Transformer for a Williamson 6V6GT AB class PP Ultralinear build I am building.
It has a voltage doubling capacity with the following input/outputs:
230,240,250 VAC primary
124,114,104 or 310,285,260 outputs on HT secs
and two 6.3 (CT) outputs on secs.
With 15 wires to decifer, I was hoping someone could explain the function of the PVD system or might have the color codes used.
The primaries and Filament outputs are east but the HT secondaries are more challenging.
I need to work out the internal workings to allow testing of the trannie without risk of damage. Any help much appreciated.
Thanks
Mark from Kalgoorlie.
I have a Ferguson PVD 111 Transformer for a Williamson 6V6GT AB class PP Ultralinear build I am building.
It has a voltage doubling capacity with the following input/outputs:
230,240,250 VAC primary
124,114,104 or 310,285,260 outputs on HT secs
and two 6.3 (CT) outputs on secs.
With 15 wires to decifer, I was hoping someone could explain the function of the PVD system or might have the color codes used.
The primaries and Filament outputs are east but the HT secondaries are more challenging.
I need to work out the internal workings to allow testing of the trannie without risk of damage. Any help much appreciated.
Thanks
Mark from Kalgoorlie.
Mark, I've just uploaded PVD103 and PVD110 datasheets - hopefully they align with PVD111. But you really should have an ohmmeter that can differentiate the winding resistances - perhaps the datasheets will now make that a bit easier, but good to do that sorting with just an ohmmeter as a learning curve.
https://dalmura.com.au/static/PVD103.jpg
https://dalmura.com.au/static/PVD110%20Ferguson%20PT.pdf
Ciao, Tim
https://dalmura.com.au/static/PVD103.jpg
https://dalmura.com.au/static/PVD110%20Ferguson%20PT.pdf
Ciao, Tim
Hi Tim,
Thanks for the reply.
Its great to see community spirit at work.
I will have a look at the specs and tranny and see if they match.
Where did you get the data for the tranny?
Its invaluable data.
Thanks again
Mark
Thanks for the reply.
Its great to see community spirit at work.
I will have a look at the specs and tranny and see if they match.
Where did you get the data for the tranny?
Its invaluable data.
Thanks again
Mark
Typically from eBay listing photos - if I see something relevant I save it - and I guess this is one of the reasons for saving that info 🙂