Hi all,
I rebuilt my 'solid state' PSU test load.
The old one made in the middle 80's was suffering and creaky.
Took off the worn and melted plastic case and made up a new one with better connections and cooling.
This article shows the prior rev and the current one.
No useful changes were made on the schematic.
Did remove some 'junk' parts, and made a better equalizing harness.
The new unit's photos are near the end of the article. Think of it as a 'before and after' series.
http://www.flickr.com/photos/9010884...th/6532006081/
Ran this thing so much it even put my bench supply into thermal overload and shut it down.
Ain't that slick.
Sorry about the poor photography. Will try and take some better photos later.
Be well all.
Jack Crow
I rebuilt my 'solid state' PSU test load.
The old one made in the middle 80's was suffering and creaky.
Took off the worn and melted plastic case and made up a new one with better connections and cooling.
This article shows the prior rev and the current one.
No useful changes were made on the schematic.
Did remove some 'junk' parts, and made a better equalizing harness.
The new unit's photos are near the end of the article. Think of it as a 'before and after' series.
http://www.flickr.com/photos/9010884...th/6532006081/
Ran this thing so much it even put my bench supply into thermal overload and shut it down.
Ain't that slick.
Sorry about the poor photography. Will try and take some better photos later.
Be well all.
Jack Crow
