Przem's Phase Linear 700 Series II White Oak Conversion

[laatsch55]

I look after 120 wells Przem. It CAN and DOES take a lot of my time....

 

[laatsch55]

They're within 100 miles from the house.

 

[P.L.F.]

They're within 100 miles from the house.

'Chapeau bas' - that's like in another country taking say Benelux region as a reference... Take care Lee, don't speed up...

 

[laatsch55]

Just an hour and a half drive here Przem. Very sparsely populated here. Just 480,000 people for 90,000 square miles...Wyoming is 300 miles by 300 miles...

 

[P.L.F.]

Just an hour and a half drive here Przem. Very sparsely populated here. Just 480,000 people for 90,000 square miles...Wyoming is 300 miles by 300 miles...

Yes, I see. Remember some pictures you posted somewhere here. I must say they looked so 'unearthly' to me - hate crowded places when you drive hours and not leaving urban developments...

 

[laatsch55]

That's one of the reasons I love it..

 

[gadget73]

Rail voltage was 92.6 at 520 watts out into 8 ohms...

mine drops more than that making less wattage.

 

[laatsch55]

So does mine...this is a dual voltage primary and I suspect there is less droop in the mains 240...

 

[gadget73]

maybe less DC resistance in the secondary, or just better coupling to the primary since there are more turns. Is the physical size the same? If its got more iron for 50 hz duty, you'll get slightly better efficiency out of that too.

 

[laatsch55]

The physical dimensions are the same..as to your other questions, I don't know. More turns on the primary , less on the secondary. With the secondary voltage being the same in both transformers, there would be less turns on the secondary winding on the 240 primary than the 120 primary. So...would it actually couple better?? Don't think so. Personally I think it's the ability of the higher voltage primary to supply the secondary with voltage and current with less sag on the primary. Transformers are funny things....

 

[laatsch55]

Saturation, eddy currents, hysterisis, lotta things could affect it....

 

[gadget73]

yeah. lots of variables. Either way, if it performs better, it is better yeah?

 

[laatsch55]

Yeah.... but higher voltage in that chassis has the potential for more noise..

 

[laatsch55]

73..what was your rail voltage to start with?

 

[gadget73]

100.5 or something right around there. It was just a teeny bit over the cap's 100v rating. I want to say at full crank on both channels it was down around 85 volts. My load resistors can't handle that level of power for an extended amount of time, so it was a fairly short duration test.

 

[laatsch55]

Rails on this one were 106.

 

[P.L.F.]

Lee, not sure I've mentioned - I'd need the previous drivers (RCA's 410) for other small project...
Just drop'em somewhere in my cabbage case. Many thx!

 

[laatsch55]

Will do Przem...

 

[laatsch55]

Here ya go PLF...acceptable??

 

[P.L.F.]

Will do Przem...

Thank you Lee!

Any progress with our WOPL Project? Can't wait to hear with my own ears this newly born beast...