"west" writes:

Hello Steve,

Thanks for the interesting PS links. I'm not sure of their HT current
capabilities. I've been wanting to make a good bench HT, Fil, & Bias supply,
for a while now. I have a few ham radio PS that don't quite make it.. The
major drawback is that the Xfrs are only capable of 100ma. At times I could
use a little more that 400ma. Hopefully, someone reading this thread will
come up with a viable suggestion.

Cordially,
west

The best high current PS I have seen uses the same topology as the GE
1-compactron one but uses several 6080 (6AS7) in parallel. I have an
old transformer I am saving for that kind of thing that puts out
650Vct at 850mA. I have a TV transformer that is 550 at 250mA, but it is
being saved also. That's alot of iron.

The basic block will work for any load, just get enough current handling.

Good luck.

Steve.


--
Steven D. Swift, , http://www.novatech-instr.com
NOVATECH INSTRUMENTS, INC. P.O. Box 55997
206.301.8986, fax 206.363.4367 Seattle, Washington 98155 USA

In article ,
(Steven Swift) wrote:

The best high current PS I have seen uses the same topology as the GE
1-compactron one but uses several 6080 (6AS7) in parallel.

6080s are good for this. I used to have a regulated supply from an old
Ampex VR-1000 (2" reel-to-reel VTR) that delivered 250V at 6.5A.

I have an
old transformer I am saving for that kind of thing that puts out
650Vct at 850mA. I have a TV transformer that is 550 at 250mA, but it is
being saved also. That's alot of iron.

At the end of the day, the transformer is goung to be the biggest (and
certainly the heaviest and most expensive) single component.

Quality does not come cheap.

Chris.

Chris Suslowicz wrote:
In article ,
(Steven Swift) wrote:


At the end of the day, the transformer is goung to be the biggest (and
certainly the heaviest and most expensive) single component.

Quality does not come cheap.

Chris.


I would look at thrift stores like the Goodwill for an old colour TV
(tube type) and
salvage the power transformer out of it.

wrote:

I would look at thrift stores like the Goodwill for an old colour TV
(tube type) and
salvage the power transformer out of it.

Sadly, most of those were hot chassis.

However, a very interesting device is the microwave oven transformer.
110V in, 1KV out, varying from half a kilowatt to a kilowatt. The
transformer core is split so you can easily take turns off to lower the
secondary voltage, too.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Hello:
A good tube for thisapplicattion is a 6336B
Look at
http://www.deremate.com.ar/accdb/Vie...sp?IDI=9835995
Regards

Heriberto

"Chris Suslowicz" escribió en el mensaje
...
In article ,
(Steven Swift) wrote:

The best high current PS I have seen uses the same topology as the GE
1-compactron one but uses several 6080 (6AS7) in parallel.

6080s are good for this. I used to have a regulated supply from an old
Ampex VR-1000 (2" reel-to-reel VTR) that delivered 250V at 6.5A.

I have an
old transformer I am saving for that kind of thing that puts out
650Vct at 850mA. I have a TV transformer that is 550 at 250mA, but it is
being saved also. That's alot of iron.

At the end of the day, the transformer is goung to be the biggest (and
certainly the heaviest and most expensive) single component.

Quality does not come cheap.

Chris.