https://groups.yahoo.com/neo/groups/hp_agilent_equipment/info

I think you can buy protective lacquer that will not cause the printing to bloom or smudge. Scotch Magic Tape is pretty tough but I wonder of the lacquer is better. I've used ink jet decal material to

FWIW, the contents of brand name solvents like Ronsonol are in their MSDS available via the web. The MSDS also usually list the CAS numbers of the constituents. There are some tutorials on solvents on

Also may be a carryover from aluminum electrolytic practice where caps were supposed to be run at near rated voltage to keep the electrolytic layer formed. There is something in the book "Reference Da

The Lotus file opened fine in Open Office Calc, which also opens Excel files. I wonder about the method used for rating these caps since it seems they should be rated at about half their label voltage

This is even more puzzling. I looked up the color code for tantalum caps, I found several sites. Top is first significant digit, ring is second significant digit, dot is multiplier, all as you say. Ho

I think this was aimed mostly at me. Sorry for stirring up the pot.

I always forget something. There is a good deal on all of these amplifiers in the famous "Radiotron Designer's Handbook" 4th edition (the big red one) available on line from tubebooks.org and a couple

Doesn't work any better, sorry. You must copy and past the URL for it to work. Williamson talks about the transformer. A transformer was made to his specifications by Partridge and sold in the U.S. as

The mail truncated the URL try <http://www.keith-snook.info/wireless-world-magazine/Wireless-World-1952/Amplifiers-and-Su perlatives.pdf>

Williamson was famous for his driver circuit. His original amplifier used triodes or triode connected pentodes. The circuit was modified a few years later to improve its stability and get rid of some

I don't want to trim this long thread because the context may be helpful to future readers. Its important to differentiate between voltage or current transmission and power transmission. Impedance mat

It seems to me brightness change as a function of sweep velocity might be practical and take care of a lot of problems. I don't know if anything like that was ever offered in a scope. Some TV sets hav

I use Thunderbird. It has a sort by threads feature. I think you can get the same sort of thing on the IO website but am not sure. I rarely use mail web sites. However, the threading is based on infor

On my schematic BA and BB are shown right on the edge line of the board. They look like they are connected together but are not. BB goes to ground and to the shield of the coax that goes from R1274 to

I am working on a 453 right now so its easy enough for me to look at the actual wiring. Will do so tomorrow. I have both the commercial and military versions of the handbook. The civilian one has some

Ethanol is drinking or grain alcohol AKA ethyl alcohol. As used in gasoline it is mostly derived from corn. Methanol is so called wood alcohol or methyl alcohol. Used as a solvent but I don't think in

I already replaced the transformer but its easy to get to so I will get some correct compound and re-install it. The original does not seem to have any filler in it, its clear. Same stuff on the oscil

The stuff I am using is MG Chemicals 8462 grease. Has very good insulation properties but not high heat transfer. The original material was thin, clear, grease of some sort both on the transformer and

The HV transformer is clamped to a heat sink underneath it (actually above it when the scope is upright). Both sides are coated with thin grease. The same stuff was on the transistor when I took it ou