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 > Your search for posts made by 'LScamper' found 6 matches.

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RE: Remembrances of vacuum tube days

The first checks done at low voltage about 10 kV. Don't remember what state things are in for the picturs (some 25 years ago). You can see two shorting hooks (JESUS sticks as someone called them in previous post) sitting on top of the amplifier. I'm sure there was hard shorts on all storage caps. When higher voltage the sides had covers on and the cables on the outside. As an aside these tubes were seasoned at 50kV plate votage for the 2.5 gigawatt amplifier string.
LScamper 12/18/20 12:27pm Technology Corner
RE: Remembrances of vacuum tube days

In the mid 90s helped with the design of a 200 megawatt two channel amplifier. It used 12 ML8618 water cooled magnetically beamed triodes. Some of one bank of tubes. https://i.imgur.com/HnH8IXFl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image. Amplifier testing area. https://i.imgur.com/5aFqJGKl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image. At one time while working on Scyllac we had an amplifier chain of 100 ML8618 tubes for a total output power of 2.5 Gigawatt. filament power was 32 kilowatt.
LScamper 12/16/20 02:47pm Technology Corner
RE: Remembrances of vacuum tube days

After Army worked on fusion energy experiment called Scyllac. Specs: https://i.imgur.com/ESywzGBl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image. A few of the 60 kV, 1.8uf capacitors. https://i.imgur.com/k0dSsGBl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image. Some of the racks of capacitors. https://i.imgur.com/lw4KwChl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image.
LScamper 12/16/20 02:38pm Technology Corner
RE: Remembrances of vacuum tube days

In the Army worked on a Nike site. Was the computer operator. Analog computer used tube op amps and gears to calculate target intercept. Pictures of a few of the op amps and one of the mechanical calculating units. https://i.imgur.com/5bp7JIrl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image. https://i.imgur.com/k83IaMgl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image.
LScamper 12/16/20 02:33pm Technology Corner
RE: Remembrances of vacuum tube days

Dad had a used furniture store. He paid me $1.00 to fix the old TVs. This was my shop when I was about 15 years old. https://i.imgur.com/pphh8hHl.jpg "border=0" https://i.imgur.com/m3zZPvb.pngClick For Full-Size Image.
LScamper 12/16/20 02:26pm Technology Corner
RE: Garmin RV 780 or 785 GPS

Lot of reviews on YouTube for both.
LScamper 11/21/20 10:31am Technology Corner
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