Hi
Last time I went down that road, finding a FET with *low* enough Gm to match
the tube was the issue. Some circuits are fine with 10X the gain others not so
much so. The one thing that helps you is that the output conductance of the
tube is generally higher than the FET's so you get a bit of
Bob wrote:
Last time I went down that road, finding a FET with *low* enough Gm
to match the tube was the issue.
You can always lower the gm of a FET by adding source resistance. To
replace pentodes, you can use cascoded FETs (you may or may not be
able to use the existing screen supply for
Hi
Last time I went down that road, finding a FET with *low* enough Gm to
match the tube was the issue. Some circuits are fine with 10X the gain
others not so much so. The one thing that helps you is that the output
conductance of the tube is generally higher than the FET's so you get a
bit
just for show-and-tell:
I've been disassembling the Schmomandl ND100M oscillator
block to see if I could use it. I figured, it's the bird
in hand, and once was a high quality piece of equipment
so maybe...
The physical construction is great. Lots of fine pitch
slot head machine screws. Lots
Chris, your links don't work.
ch...@yipyap.com wrote:
just for show-and-tell:
...
I have four rough pictures.
www.yipyap.com/radio_stuff/ND100M/One.pdf is right (rear)
end of the component side.
www.yipyap.com/radio_stuff/ND100M/Four.pdf is the left (front)
end of the component side.
ch...@yipyap.com ch...@yipyap.com wrote:
just for show-and-tell:
404 :-(
-ls-
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sorry, revised with correct URL's.
ch...@yipyap.com wrote:
just for show-and-tell:
I've been disassembling the Schmomandl ND100M oscillator
block to see if I could use it. I figured, it's the bird
in hand, and once was a high quality piece of equipment
so maybe...
The physical construction
Interesting story.
http://www.gpsworld.com/gnss-system/augmentation-assistance/news/failure-imminent-waas-geo-satellite-9841
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