New Record For A "HOT" PL 400 Power Transformer,,

[laatsch55]

I'll let the pics speak for themselves... Ed has been going through his stuff to make room in the garage....

 

[NavLinear]

She's smoking hot!

 

[laatsch55]

At those voltages, it would even be considered a hot 700.

 

[jbeckva]

At those voltages, it would even be considered a hot 700.

Yeah. I was about to say that aint nothing, my 700 was at 106.... and then I realized you were talking about a 400! Wow... I wonder what that one will eventually spec out at for output power?

 

[laatsch55]

425-430 per side, she'll be a 400 X 2.

 

[Gepetto]

You will have a hard time keeping transistors alive in that with only 3 per side. Not adequate SOA rating if you intend to push it hard.

 

[laatsch55]

That's what Ed said. The amp it was in could not keep the XPL-909's in it.

 

[NavLinear]

Sounds like a chassis mod is in order - as Joe said the extra drivers will be needed to handle the output current. What an interesting problem though. I'm visualizing a change...

 

[laatsch55]

I'm thinkin stock, and having some headroom.

 

[Gepetto]

headroom until it blows...

 

[laatsch55]

Won't argue with that Joe. What's my limit here?? the max 200 vilt Vce? Or is it current. The 555's ca swing 400 and do 10 amps.

 

[Gepetto]

It is a combination of both Lee, called SOA. you can only pull something like 400mA at the 200V Vce and that is only for brief periods.

 

[laatsch55]

As you approach max Vce the max amps drop like the rock eh?? There wasn't SOA curves on the data sheet I have, thanks....

 

[NavLinear]

As you approach max Vce the max amps drop like the rock eh?? There wasn't SOA curves on the data sheet I have, thanks....

I don't think you have a safe operating area Lee! What data sheets?

 

[laatsch55]

This one,.....

 

[NavLinear]

Yeah - this data sheet is lacking information.

 

[laatsch55]

And a language I can read, if it was readable...

 

[NavLinear]

And a language I can read, if it was readable...

Trannies are complicated - ohhh what did I just say?

 

[orange]

They are like my old Dodge Dart, the factory put in whatever they had left.

 

[laatsch55]

I'm still not real clear on what exactly a transistor really does.....