??? Ed, I even took a picture of you last time we met!
jan
Just checking!
Attached is a picture that might explain why one should use radial capacitors for power supply filtering not axial ones.
Attachments
Mr Curl, my professional life circulated more or less around (certified) aircraft grade aluminium for real (engineering) needs.
I would not object to posts like this.
Steve gave already some simple clear answers ref. Buzzwords.
George
Graining, bead blasting and anodizing isn't very expensive. Not much more than powder coating.
se
I don't know the 'particulars' about the Blowtorch case, all I know is what I was told, perhaps a decade or more ago. I left it to Bob Crump, (now deceased) and his pick of machinists in Houston, Texas. I mostly worried about the thickness being enough to get rid of any external interference, and that it did not RING! I feel the same way about phonograph turntable platters.
must be the longest thread i ever tried to go through...
I must say, after all the bashing John Curl had to endure it is admirable he
took it so calm....
After all, it turned out that he propable is not even responsible
for the flashy stuff, lousy connectors a.s.o.
All the best to you John
I must say, after all the bashing John Curl had to endure it is admirable he
took it so calm....
After all, it turned out that he propable is not even responsible
for the flashy stuff, lousy connectors a.s.o.
All the best to you John
So what? Why all this fuzz if someone chooses otherwise???
I really do not understand....
But I like your hairstyle
I could care less if someone chooses otherwise. I was responding to John's "...even if you would be happy with something cheaper." Simply pointing out that graining, bead blasting and anodizing isn't terribly expensive to begin with.
But I like your hairstyle
Thanks! I really like its low maintenance.
se
tvi
I read the patent
Eddy current reducing system
I would expect him to use well known formulae and arrange for proper testing
Hysteresis losses are a function of frequency.
Eddy current losses are a function of frequency squared.
Both are depending on core construction and are independent of load.
Copper losses are a function of load current squared and are independent of core construction.
He claims an eddy current reducing system, assuming that eddy currents behave the way he thinks. He backs up his claim with some really inadequate measurements.
I can assure you that eddy currents induced in a good conducting mass of metal can not be “grounded” by grounding the metal mass in one, two, three points. They are localized currents. This is reliably verified and quantified with specialized equipment (NDT eddy current testers).
True, size and way of eddy current circulation is affected by frequency, but they are still localized, to the extend that they can not be routed to or siphoned by electrical connections.
wrinkle
His patent would be of great importance to the industry, as it would potentially eliminate the need for laminated construction in some trafos, motors, generators and would give him a lot of money, only if it “worked”.
George
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Stupid question 1 : How many (serial) preamp models, with cases out of a solid chunk of easy to machine aluminum, were there at the time of BT No2 ('97)?
Stupid question 2 : How many now (+ power amps/phono stages/DAC's) ?
(aviation/military not acceptable)
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