John Curl's Blowtorch preamplifier

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G.Kleinschmidt said:



I don't get it. If that is a coffee add, why is the guy smoking a pipe?

I surmise that the individual pictured is intended to represent the "boss" grower, the plantation owner, a relaxed and satisfied man watching his native indentured "workers" slave in the sun for "beans" while he puffs away on his pipe while sitting high up in a cool location...

Yah, that's my type of coffee!!

<start on topic content> Btw, the "boss" is an avid Diyer and has an excellent stereo system, mostly home built - and owns an actual Blowtorch preamp that he purchased from a Japanese gentleman on his last trip there... <end on topic content>

_-_-bear
 
Sorry PMA back to open-loop linearization. Edmond that third technique is not optimum without the same considerations so what we have already is the best bet. For observers, what we are striving for is a linearized open-loop signal path to eliminate this source of dreaded PIM.
 
scott wurcer said:
:bigeyes: "Author Ernest Hemingway used a Boss & Co. shotgun in his 1961 suicide."😱

Very good guns...once had a pair of 12g single triggers with the lightweight (rounded) action.
Tres 😎

Don't know too much of Mr Hemingway other than 'The Old Man and the Sea': in retrospect I can see many trying to bring J.C. to land strapped to the boat as a trophy. If I had those Boss guns I would be tempted to have a few trophies of my own!!😀 😀
 
peranders said:



Boss Coffee



the other / another 'Boss' -


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janneman said:

Thread hits. I just bumbed it up to 1118210. :cheerful:

Looks like we need a new topic for discussion, hmmm .... well I'm curious about the difference between vertical and lateral mosfets. I know the laterals have lower C's and higher on resistance. But what specs are desireable for say a power amp output stage. Or a gain stage. And it seams most power mosfets are designed for switching applications. Are these very linear? Do you just test them with a curve tracer, to find the most linear ones? I can't afford a curve tracer unfortunately.
 
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